The characters and events portrayed in this book are fictitious. Any similarity to real persons,

living or dead, is coincidental and not intended by the author.

No part of this book may be reproduced, or stored in a retrieval system, or transmitted in any form

or by any means, electronic, mechanical, photocopying, recording,

or otherwise, without express written

permission of the publisher.

ISBN-13: 9781234567890

ISBN-10: 1477123456

Cover design by: Art Painter

Library of Congress Control Number:

20186 75309

Printed in the United States of America

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UNIT I Design of 2/tachine

Tool Gear Box

Syllabus: Introduction to machine tool gearboxes, design and its applica- tions, basic

considerations in design of drives, determination of variable speed range, graphical

representation of speed and structure diagram, ray di- agram, selection of optimum ray dia- gram,

gearing diagram, deviation dia- gram.

- Which of the following is the need

of the gearbox?

A. To vary the speed of the vehicle

C. To vary the power of the vehicle

D. To vary the acceleration of the vehi-

cle

- Higher the value of geometric pro- gression, is loss of eco- nomic cutting speed.

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B. Lower

C. Constant

D. None of the above

- If number of spindle speed steps, z = 27, then Number of stages of the gear- box is,

A. 1

B. 2

D. 4

- Identify the optimum struetwe di- agram from the following structwal formulae.

A.2(3) 3(1)

C. 3(1) 2(3)

D. 3(2) 2(1)

- Advantage of the arithmetic Pro- gression is

B. It is poor in low spindle speed range

C. All of the above

D. None of the above

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- «disadvantage of the arithmetic pro-

gression is

A. It is good in High spindle speed

range

C. All of the above

D. None of the above

- Advantage of the Geometric Pro-

gression is

A. It gives constant loss of economic cutting speed in total speed range

B. Gives better gearbox design featwes

D. None of the above

- Disadvantage of the geometric pro- gression is

A. It is good in high spindle speed range

C. All of the above

D. None of the above

- In case of single speea gear box

for every input speed there is/are only

—–output speed.

A. THREE

C. TWO

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D. CAN’T SAY

- Minimum difference between number of teeth of adjacent gears in a change gera block must be

atleast—

A. 6

B. 3

C. 4

D. 5 - Spacing between two adjacent gear on the shaft must be greater than —–

the face width.

B. Thrice

C. Four times

D. can’t say

- Range ratio for central lathe is —

A. 8 to 10

B. 15 to 25

C. I S to 30

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- Deviation of actual spindle speeds from calculated spindle speeds must not exceed—

B. 20 (Q—1)

C. 30 (Q-1)

D. 40 (Q—1)

- What is step ratio?

B. In A.S. ratio between the two adja- cent speeds is known as step ratio

C. In H.P. ratio between the two adja- cent speeds is known as step ratio

D. In L.P. ratio between the two adjacent speeds is known as step ratio

- What kinematic arrangement is as

applied to gear boxes?

A. The kinematic layout shows the ar- rangement of gears in a gear box

B. Indicates number of stages used

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C. It also provides information’s like number of speeds available at each spindle

- List out the possible arrangements to achieve 16 speed gear box

A. 4x2x2 scheme

B. 2x4x2 scheme

C. 2x2x4 scheme - Which of the following type of drives transmit power by friction?

A. spur gear drive

B. chain drive

C. worm gear drive - When the axes of two shafts are parallel, use

A. crossed helical gears

C. worm gears

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D. bevel gears

- When the axes of two shafts are perpendicular and intersecting, use

A. spw gears

B. bevel gears

C. worm gears

D. helical gears - When the velocity ratio is high

and space is limited, use

A. spur gears

B. bevel gears

D. helical gears

- An automobile gearbox has

A. simple gear train

B. compound gear train

D. None of the above

- Diameter range is high in geomet- ric progression due to spin- dle speed.

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B. high

C. constant

D. none of the above

- What is harmonic progression?

B. Difference between two successive spindle speeds is constant

C. Ratio of two successive spindle speeds is constant

D. Ratio of two successive spindle

speeds is variable

- What is arithmetic progression?

A. Difference between reciprocal of two successive spindle speeds is constant

C. Ratio of two successive spindle

speeds is constant.

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D. Ratio of two successive spindle speeds is variable.

- What is the pwpose of using a gear

box?

A. To increase torque

B. To increase speed

C. Converts single input speed into multiple output speeds - Ratio of two spindle speeds is con-

stant in progression.

A. Arithmetic

C. Harmonic

D. None of the above

- Which of the following state- ments is true for structwe/speed dia- grams?

A. Structwe diagrams gives range ratio

of spindle speeds

B. Speed diagrams do not give range ratio of spindle speeds

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D. All of the above

- The common normal to the cwves of the two teeth must not pass through the pitch point.

A. TRUE

C. It may or may not pass

D. None of the listed

- What is the maximum percentage loss of economic cutting speed if geo- metric progression ratio

1.o6 ?

A. 1 7.00%

B. 11.50%

C. 5.70% - A machine tool has minimum speed of 100 r.p.m. How many speed steps are required by it

to achieve speed of 200 rpm? (Geometric pro- gression ratio 1.06)

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A. 11

C. 13

D. 14

- Recommended value of Q for heavy duty machine tools and au- tomats—

B. 1.26

C. 1.5 6

D. 1.14

- Ratio of two spindle speeds is con- stant in progression.

A. Arithmetic

B. Harmonic

D. All of the above

- Number of spindle speed steps in machine tool gear box indicated by letter

B. Q

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C. Rn

D. None of the above

- The normally selected value/ sofZ is /are –

A. 4

B. 6

C. 8 - Letter P indicates in machine tool gear box as ?

B. Number of spindle speed steps

C. Geometric ratio

D. Range ratio

- For machine tool gear box the transmission range should not be greater than —

A. 9

B. 10

C. z 1

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- In speed diagram, each horizontal

l!ne represents a—

B. Spindle steps

C. Both a and b

D. None of the above

- What is /are the limitation/s of

structwe diagram—

A. It gives, the spindle speeds

B. It gives, the motor speeds

C. It gives, the geometric progression ratio - Higher the value of geometric pro- gression, is loss of eco- nomic cutting speed.

B. Lower

C. Constant

D. None of the above

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- Number of speed steps in any stage should not be more than—

A. 3

B. 4

C. S

D. 6 - Salient featwef s of speed diagram is I are—

A. It gives, the number of shaft in the gera box

B. It gives, the number of gears on each

shaft

C. It gives, the spindle speeds - To avoid interference on gears, the number of teeth on the smallest gear of the gear box is—

A. 21

B. 16

D. 20

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- In arthmetic progression the——

between any two successive spindle

speed is constant.

B. Substraction

C. Reciprocal

D. None of the above

- Yultispeed drive with arithmetic progression is /are good in spindle

speed range

B. Low

C. Both a and b

D. None of the above

- Nultispeed drive with arithmetic progression is fare poor in spindle

speed range

A. High

C. Both a and b

D. None of the above

- In geometric progression the ——

of any two successive spindle speed is

constant.

A. Addition

B. Substraction

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D. None of the above

- Yultispeed drive with geometric

progression is / are poor in spin- dle speed range

A. High

C. Both a and b

D. None of the above

- The smaller value of geometric

progression ratio Q is / are used in—

A. Large sized heavy duty machine

B. Automats

D. None of the above

- For the lower value of geometric progression ratio Q the loss of eco- nomic cutting speed is—

A. Minimum

C. Moderate

D. Insufficient data

- “For the lower value of geomet- ric progression ratio $ the number of speed steps or spindle

speeds Z is—

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B. Small

C. Insufficient data

D. None of the above

S1. Standard values of geometric pro- gression ratio Q for series Q20Z3 equal kg;….

B. 1.56

C. 1.78

D. 2

- Loss of economic cutting speed is

B. Ratio of actual cutting speed to opti- mum cutting speed

C. Difference between reciprocal of ac- tual cutting speed and optimum cut- ting speed

D. None of the above

- In order to compromise between the loss of economic cutting speed and the eompactness of the

drive the value of Q is selected

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A. 2 < @ S 3

B. 3 < @ 6 4

C. 4 < §z 6 5

- Maximum and minimum diameter of a shaft to be machined is 100 mm and 80 mm respectively. What

is the maximum spindle speed if cutting ve- locity is 40 m/min?

A. 120 r.p.m

B. 127 r.p.m

D. 636 r.p.m.

- Economic cuHing speed is mini-

mum if geometric ratio is

B. maximum

C. equal to economic cutting speed

D. none of the above

S6. In which type of manual transmis- sion the double-declutching is used?

B. Sliding mesh gearbox

C. Synchromesh gearbox

D. Epicyclical gearbox

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- von Mises and Tresca criteria give

different yield stress for

A. Uni-axial stress

B. Balanced bi-axial stress

D. All of the above

- The following provides a smooth means of disengagement and engage- ment between the engine and

the re- mainder of transmission system

B. Gearbox

C. Propeller shaft

D. Differential

- Mechanical transmission can be of

following class

A. Clutch, gearbox and live axle trans- mission

B. Clutch, gearbox and dead axle trans-

IMlSSlOIl

C. Clutch, gearbox and axleless trans-

missiOn

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- Transfer case is located next to the

gearbox in

A. Front wheel drive

B. Rear wheel drive

D. All of the above

- Axle which form compact unit

with gearbox, clutch and engine

A. Tandem axle

B. Power packed axle

C. Compact axle

D. None of the above - In machine tool gear box, opti- mum number of speed steps with in- crements between—

A. S to 10 %

B. 10 to 15 %

D. 20 to 25 %

- What are the requirements of a speed gear box?

A. Power transmission

B. Speed variation

C. Toque variation

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- The main function of an automo-

bile gearbox is

A. to reduce speed

B. to increase speed

D. to increase power

- Why G.P series is selected for ar-

ranging the speeds in gear box?

A. The speed of loss is minimum

B. G.P provides a more even range of

spindle speed at each step

C. The layout comparatively very com—

pact - Which method is used for chang- ing speeds in gear boxes?

A. Sliding mesh gear box

B. Constant mesh gear box

D. None of the above

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6Z. What are preferred Numbers?

B. Number obtained from arithmetic series

C. Numbers derived from Harmonic Progression

D. The Rpm values constitute a loga-

rithmic Progression

- To avoid interference on gears, the number of teeth on the smallest gear of the gear box is—

A. 21

B. 16

C. 18

D. 20 - If two meshing gears have 4:1 gear ratio and the smaller gear has 12 teeth, the large gear

will have

A. 12 teeth

B. 24 teeth

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D. None of the above

- The top cover of all gear drive is_

B. non-removable

C. can’t say anything

D. none of the mentioned

- If a, G, b are in Geometric Progres- sion then ‘G’ is said to be

A. Arithmetic mean

C. Standard deviation

D. none of above

- A feed gear box for a screw cutting

lathe is designed on the basis of

B. Arithmetic progression

C. Harmonic progression

D. None of these

- The constant factor in case of R10

series of preferred numbers is

A. 1.06

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B. 1.12

D. 1.5 8

- A ———– diagram is a represen- tation of structwal formula, speed in each stage, the

transmission ratio in each stage

A. Speed diagram

B. Ray diagram

C. Speed chart

D. Structwal diagram - Contact ratio is always

A. 1

C. < 1

D. Can’t be determined

- The size of a gear is usually speci- fied by

A. presswe angle

C. circular pitch

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D. diametral pitch

- The basic series of preferred num- bers are

B. R10, R20, R30, R40 and R50

C. R5, R10, R15, R20 and R25

D. none of the above

- For construction of kinematic dia- gram of multispeedgear box, which of following equation is

correct.

A. Z„,;„> 18

B. Zli +Z1o = Z2i +Z2o=Z3i +Z3o = C

C. Z2i +Z1i> 4 - Permissible speed deviation is

B. z 10 (a + 1)

C. i 10 (a x 1)

D. z 10 (a /1)

- Six speed gear box having out- put speeds are l6Orpm Minimum and

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1000 rpm maximum. Value of geo- metric progression ratio is

B. 1.6623

C. 1.5 234

D. 18. 722

- Value of Q10 is ….

B. 1.36

C. 1.66

D. 1.76

- Formula for range ratio (Rn ) of spindle speed is…

B. / n„,g

C n„,g +

D n„„„ –

- Number of structwal formula for the I ‘ number of stages is calculated

with the following equation

A. (N!)

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B. (z!)

D. (Z!)2

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UNIT II: Statistical

Consideration in Design

Syllabus: Frequency distribution-His- togram and frequency polygon, normal distribution – units of

central tendency and dispersion- standard deviation population combinations – design for natwal

tolerances – design for assem- bly – statistical analysis of tolerances, mechanical reliability

and factor of safety.

- The area below normal cwve from (Z ->) to (Z +

B. 0.6827

C. 0.9545

D. 0.99 73

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where Z is standard variable

- Pulley Coupled to drive unit and drives the belt conveyor is called as

B. tail pulley

C. crown pulley

D. flat pulley

s. Which of the following is not a belt conveyor

A. troughed

B. blanket

C.

. flat belt

- If inclination angle is 55⁰ the

belt conveyor used is called as

A. troughed

B. blanket

C. chain

D. flat belt

s. To calculate capacity of Horizontal Belt Conveyor—–

factor is used

A. flowability Factor

B. Inclination Factor

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D. None

- To calculate capacity of in-

clined Belt Conveyor factor is used:

A.

B. Inclination Factor

C. Surcharge Factor

D. None - What is frequency polygon?

B. Bar chart

C. Histogram

D. Set of rectangles

- What is a standard deviation?

A. Root mean square deviation

from the mode

B. Variance

C. Root mean square deviation

from the median

D. - What is the mean value in standard normal distribution cwve

A. 1

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B. 3

D. S

- Dispersion of population is measwed in units of

A. Margin of safety

B. Athematic mean

D. Reliability

- If design tolerance is greater than the natwal tolerance

A. There will be some rejection

C. the rejection is inevitable

D. Manufactwing cost will be low

- In statistically controlled

system

A. variations due to chance causes

are corrected

B. variations due to assignable and

chance causes are corrected

C.

D. No any variations

- Central tendency of popula- tion is measwed in units of

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A. square of standard deviation

B. standard variable

C. standard deviation

D.

- What is skewness of popula-

tion?

B. concentration of data at either

low or high end

C. mid-point of distribution where

most of the data cluster

D. spread of data or extend to which the observations are scat- tered

- Skewness of population is

A. spread of data or extend to which the observations are scattered

B. midpoint of distribution where most of the data cluster

D. measwe of sharp peak

- What is kurtosis of popula-

t1OI1*

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A. spread of data or extend to which the observations are scat- tered

C. concentration of data at either

low or high end

D. midpoint of distribution where

most of the data cluster

- Natwal tolerance is

B. Set somewhat arbitrarily by the designer

C. machining allowance provided

D. always 95.45%

- The variations due to chance

causes occw

B. Always

C. with some frequency

D. corrected

- In statistically controlled system

A. variations due to assignable and

chance causes are corrected

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B. variations due to chance causes are corrected

D. variation due to chance cause

always corrected

- The population of the margin

of safety is formed by

B. Adding the population of stress from the population of strength

C. Multiplying the population of stress from the population of strength

D. Dividing the population of

stress from the population of

strength

- In the standard normal dis- tribution cwve the standard variable is…..

A. W

B. X

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- In Standard Normal Distribu- tion cwve the area under the cwve is always

A. 0

C. 2

D. Infinite

- The resultant population is

normally distributed,

A. when populations of two nor- mally distributed random vari- ables are added

B. when populations of two nor- mally distributed random vwi- ables are subtracted

C. when populations of two nor- mally distributed random vari- ables are multiplied

D. - A mechanical component is subjected to a mean stress of 100N/mm2 and a standard deviation of 10

N/mm2. The material of the component

has a mean strength of 130

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N/mm2 and a standard devi- ation of 15 N/mm2. What is the mean and standard devia-

tion of margin of safety?

A. 30 A 18

B. 45 A 22

C. 2S A 10

D. 50k25

- Reliability is defined as the probability that a compo- nent, system or device will perform

without failwe for a specified period of time under the specified operating conditions.

A. Incorrect

C. Insufficient data

D. Wrong

- When the design tolerance is less than the natwal toler- ancethere is

A. No rejection

B. Rejection

C. Insufficient data

D. None of these

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Scanned with CamScanner - Coefficient of variation is de-

fined as

A.

B. Ratio of mean deviation to the arithmetic mean

C. Ratio of quartile deviation to

the arithmetic mean

D. Ratio of mode to the median

- In a frequency distribution, there are different measwes of central value or central tendency.

Choose correct option.

A.

B. Standard deviation

C. Quartile Deviation

D. Number of units - Which of the following curves have the mean value equal to zero in the graph of frequency vs

random variable?

A. Normal distribution cwve

B.

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C. Histogram

D. Bar chart

- The reliability of ball bearing selected from manufactwe’s catalogue is

A. 90%

B. 50%

C. 99%

D. - Chance cause occws due

to

A. material

B. manufactwing

process

C. injection process

D. - A shaft and bearing assembly has following dimensions:, shaft=S0z 0.3mm, Bearing bore=50z

0.3mm. Find mean and standard deviation of clearance population.

B. 0.8mm & 0.1919

C. 0.2 mm A 0.1212

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D. 0.4 mm A 0.1 111

- The bolts diameters are normally distribution with a mean of 10.01mm and stan- dard deviation

of 0.015mm. The tolerance specified by the designer for the bolt di- ameter is 10z0.025 mm. find

the standard variable (Z₁ AZ,)

for lower and upper limits.

B. Z₁=2.00mm A 2₂

0.80rnm

C. Z = -3.00 mm & Z₂ – 5.00

D. Z1= —1.9 Smm A Z2 0. 7Smm

- Sample is a

A. entire group of the apparently

identical components

C. not a part of popula-

tion

D. entire group of the apparently unidentical components

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- Median is a

A. not a middle value of the obser- vations arranged in increasing or decreasing order

B. variance

C.

D. Root mean square deviation

from the mean

- mode is a

B. middle value of the observa- tions arranged in increasing or decreasing order

C. variance

D. Root mean square deviation

from the mean

- What is the relation between standard deviation and arithmetic mean to deter- mine coefficient

of variation

A. standard deviation+ arithmetic

mean

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B. standard deviation-arithmetic

mean

C. standard deviation*arithmetic

mean

D.

- Assignable causes are caused due to changes in

A. Manufactwing process

B. Material

C. Inspection process

D. - htargin of safety is

B. material strength= the stress

C. about the design tolerance

D. natural tolerance

- What causes infant mortality

in mechanical equipments?

A. Design errors

B. Manufactwing

fects

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C. Installation

fects

de—

D.

- A plain carbon steel has mean yield strength of 300 NZ

mm° and standard deviation of 90 NZmm2. What is the mean and standard devia- tion of margin of

safety, if

mean tensile stress of 250 N/

mm2 and standard deviation of 65 N/mm2 acts on it?

A. 23.45 N/mm2, 50 N/

yyy•y}2

C. 82 N/mm2, 7.07 N/mm2

D. 7.07 N/mm2, 50 N/mm2

- What is meant by mean time

to failwe (NITTF)?

A. Mean time between two succes- sive failure compo- nents

B. Maximum time between two successive failure compo- nents

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D. Sum of number of failwes di- vided by survival time for num- ber of components

- If a relief valve has reliability

of 0.989, how many failwes are expected in testing 1000 such relief valves?

A. 111

B. 100

C. 10

D. 11 - Failwe rate for safety valve working for 400 hows is 3×10-° failwes/how. What is the

reliability of safety valve?

B. 0.989

C. 0.888

D. 0.899

- What is meant by hazard rate?

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A. Number of failures per unit time per number of items when exposed for same time

B. Probability of test specimen fails between time t1 andtl + dt1 which survives for time t₁

D. None of the above

- What is the standard devia- tion of clearance population for the diameter of shaft and hole

assembly specified below?

Shaft diameter = 30 z 0.15,

Hole diameter 30.5 z 0.25

B. 0.059 mm

C. 0.036 mm

D. 0.390 mm

- Which of the following cwves have the mean value equal to zero in the graph of frequency vs

random variable?

A. Normal distribution cwve

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C. Both a. and b.

D. None of the above

- What is the relation between standard deviation (o) and arithmetic mean (p) to deter- mine

coefficient of variation (c)?

A. C o + p

B. C n — p

D. C = o x p

- Assignable causes are caused

due to changes in

A. manufactwing process

B. material

C. inspection

process

D. - Which of these does not come into the general model of a process?

A. Input

B. Controllable input factors

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C. Uncontrollable inputs fac-

tors

D.

- The uncontrollable factors

are the factor

A. That varies according to a nor- mal distribution

B. That does not vary at all

C. That can be controlled by the

user

D. - Which of these steps are not conducted when the design of experiment procedwe is adopted?

A. Determining which variable is most influential to out- put

B. Determining where to set the

influential controllable factors so that output is near the nomi- nal requirement

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D. Determining where to set the influential controllable inputs so that the variability in the

out- put is smallest

- Experimental design meth-

ods are not used

ity

B. In process develop-

ment

C. In process troubleshooting to improve process perfor- mance

D. To obtain a process that is ro- bust and insensitive to external sowces of variability

- Which of these can be used to

develop a new process?

B. Acceptance sam-

C. Control charts

D. Histogram

- The minimum value in the class limit is called

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A. primary limit

B. upper limit

D. secondary limit

- The total of frequency up to an upper class limit or boundary is known as

A. average frequency

C. frequency tion

D. frequency polygon

distribu—

- The data presented in the form of frequency data is known as

B. ungrouped data

C. secondary data

D. calculated data

- A normal distribution

i.s:

A. Symmetric.

B. Bell-shaped, symmetric, and

unimodal.

C. Unimodal.

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- A bar chart constructed in which the area of each bar is proportional to the number of items in

each group is known as

A. pi chart

C. frequency distribution table

D. polygon

- The number of times each value appears is called the value’s

A. range

B. mode

D. standard Deviation

- The area under a standard

normal cwve is?

A. 0

B. 1

C. Equal

D. not defined - Normal Distribution is also

known as

A. Cauchy’s Distribution

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B. Laplacian Distribu—

D. Lagrangian Distribution

- The normal distribution is a proper probability distribu- tion of a continuous random variable,

the total area under the cwve f(x) is:

B. Less than one

C. More than one

D. Between -1 and +1

- In normal distribution cwve

the random variable is

A. 0

D. 1

- In standard normal distribu- tion cwve, the mean is equal tO

A. 1

B. O

C. -1

D. 2

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Scanned with CamScanner - Any Ntaterial Handling Process consists of:

A. Picking up the load

B. Transporting the load

C. Setting the load down D. - Which of the following is the type of Bulk Load:

A. Boxes

C. machines

D. Containers

- Which of the following is the

type of Bulk Load:

A. Boxes

B. machines

C. Coal

D. Containers - Which of the following is the

type of Unit Load:

B. Sand

C. Coal

D. Cement

- Which of the following is the

type of Unit Load:

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A. Stones

B. Sand

D. Cement

- Objectives of Material Han-

dling Systems:

A. Accwacy in transportation

B. Low Cost

C. Safety - *o›bjectives of Material Han-

dling Systems

A. Hoists

B. Conveyors

D.None

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UNIT III: Design of $e1t Conveyor

System for htaterial Handling

Syllabus: System concept, basic prin- ciples, objectives of material handling system, unit load and

containerization. Belt conveyors, Flat belt and troughed belt conveyors, capacity of conveyor,

rubber covered and fabric ply belts,

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belt tensions, conveyor pulleys, belt idlers, tension take-up systems, power requirement of

horizontal belt convey- ors for frictional resistance of idler and pulleys.

- iñethods of discharge from flat

belt

A. Head A pulley discharge

B. Both end discharge

C. Plow discharge D. - If the material is powed on the

Stationary belt the angle made by top swface of belt with the horizontal is called as

A.

B. Angle of Surcharge

C. Angle of Inclination

D. Angle of Declination - Methods of loading to flat

belt

A. By hooper

B. By preceeding conveyor

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C. By travelling machine

- Roller conveyors are used for

the movement of

A. fine dusts

B. granular materials

C. corrosive materials

D. - Out of the following is not the

standard belt width?

A. 400 mm

B. 450mm

C. 500mm D. - What is the mass capacity of flat belt conveyor if volumet- ric capacity 650.25 m3/hr? (p = 2000

kg/m3)

B. 1285.35 ton/hr

C.1315.25ton/hr

D. 1310.5 ton/hr

- Economy in material handling

can be achieved by

A. employing gravity feed move-

ments

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B. minimizing distance of travel

C. by carrying material to desti- nation without using manual labow

- The point where material is loaded on the belt conveyor is known as

A. Head end

B. Tail end C.

D. Discharge point - The belt conveyor front end is known as

A.

B. Tail end

C. Feed point

D. Discharge point - The belt conveyor rear end is

known as

A. Head end

B.

C. Feed point

D. Discharge point

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- If the material is powed on the moving belt the angle made by top swface of belt with the

horizontal is called as

A. Angle of Repose

C. Angle of Inclination

D. Angle of Declination

- Function of Snub Pulley is

A. Changing the path of Carrying

run of the belt

B. Changing the path of retwn run of the belt

C. Facilitating the loading and un- loading operations

D. - Material handling in auto- mobile company is done by

A.

B. trolley

C. Belt conveyor

D. None of above

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- Is it possible to reduce the centre distance as much as we want?

A. Yes power transmission in-

creases

B. No

C. Can’t be cited

D. None of the listed - The following is used to transport materials if the length of material travel is small

A. conveyor

B.

C. Overhead equipment

D. None of the above - The following is used to transport materials if the length of material travel is large

A.

B. Hoisting equipment

C. Overhead equipment

D. None of the above - Which of the following is a

Hoisting equipment

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A. Cranes

B. Elevators

C. Hoisting machine

D.

- A triple ply belt conveyor is required to transport 2

ton of iron ore per how at a

conveyor speed of 90 m/min through a distance of 1000m and a height of 300 m. if the mass density

of iron ore is

2.5 ton per cubic meter, if

electric motor speed is 1440 r.p.m, the reduction ratio of gear reducer would be

A. 20

B. 2 1.6

C. 24.1

D. 26.2 - A triple ply belt conveyor

is required to transport 2 ton of iron ore per how at a conveyor speed of 90 m/min through a

distance of 100Om and a height of 300 m. if the

mass density of iron ore is 2.5

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ton per cubic meter, the di- ameter of drive pulley is (K₁ 2 A K₂= 80)

A. 450 mm

B.

C. 525 mm

D. 550 mm

- A triple ply belt conveyor

is required to transport 2 ton of iron ore per how at a conveyor speed of 90 m/min through a

distance of 1000m and a height of 300 m. if the

mass density of iron ore is 2.5 ton per cubic meter, the belt width is

A.

B. 1050 mm

C. 1200 mm

D. 800 mm - A horizontal belt conveyor is used for transporting the bulk material having mass density of

2000 kg/m3. The swcharge factor ’C’ for the belt is 0.075, while the belt

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width is 800 mm. If the belt speed is 1.75 m/s, determine the Volumetric capacity of conveyor

A. 208.35 m3/hr

B.

C. 215.68 m3/hr

D. 220.56 m3/hr

- Fork liH truck is used for

A. lifting and lowering

B. vertical transportation

D. none of the above

- If motor speed is 1440 rpm, pulley dia. is 500 mm and belt speed is 1.5 mls, what is the

reduction ratio of gear reducer

A. 23.S2 B.

C. 20

D. 2 7.2 - The minimum Diameter of Head Pulley is given by

AG Dmin K2Z

B. D„,i— K1+*2+ p

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C. KlZp

- The minimum Diameter of tail Pulley is given by

A# Dmin K2Zp

B. * +K2+Zp

C. KlZp - A horizontal belt conveyor is used for transporting the btdk znateriaJ having mass

density of S tonfm3. The sw- charge factor ’C’ for the belt is 0.1, while the belt width is 1000

mm. If the belt speed is

2.5 mls, determine the Volu-

metric capacity of conveyor

A.

B. 612.10 m3/hr

C. 665.68 m’/hr

D. 640.56 m3/hr - Fabric rubber belts are not widely used as they can’t be operated at high speeds.

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A. They can’t be used at velocities

S0m/s

B. They can be used at high veloc-

ities

C. Limiting velocity is 20m/s

D. None of the listed

- the following is used to transport materials having flat bottoms

A. Belt conveyor

B.

C. Chain conveyor

D. None of the above - Screw conveyors are

A. Run at very high rpm

B.

als

C. Suitable for highly abrasive ma—

terials

D. All of the above - Velocity ratio for chain drive is lesser than that for belts.

A. Yes

B. No

C. In some cases

D. Can’t be determined

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Scanned with CamScanner - Material handling consists of movement of material from

A. one machine to other

B. one shop to another shop

C. stores to shop

D.

S2. Which of the following is not a hoisting equipment with lifting gear?

A. Cage elevators

B. Jib cranes

C. Pulleys

D. - The layer of a belt is gener- ally called as

A.

B. Layer

C. Segment

D. Sediment - Function of Idler is

A. Changing the path of Carrying

run of the belt

B. Changing the path of retwn run

of the belt

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D. Facilitating the loading and loading operations

- Hopper bottom type wagon

are used on Indian Railways

for transportation of

A. grains

B. fertilizers

C. coal

D. all of the above - What are bulk loads

A. Lump of material

C. Homogeneous

cles

D. Heterogeneous

cles

parti-

parti-

- The diameter of the shorter pulley in leather belt drive is 265mm. It is rotating at 1440 rpm.

CaJcu1ate the velocity of the belt.

A. 23 m/s

C. 18 m/s

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D. 18 2Sm/s

- Process of converting the bulk load into a unit load using container is

A. Materialization

C. Transportation

D. All of above

- Flowability factor when belt inclination angle is 10° to 15• is:

B. 2.5*10^-4 C. 2.35°10^-4 D. 2.20*10^-4

- The size of electric motor

depends on

A. hoisting speed

B. weight of load

C. Period of acceleration A retarda- tion

D. - Creep is the slight absolute motion of the belt as it passes over the pulley.

A. Yes

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C. None of the listed

D. It is absolute motion

- The ————- type idlers with are used

in heavy duty applications of

belt conveyor.

A. Roller — Ball Bearing

ing

C. Rubber cover-Ball Bearing

D. Rubber cover- Roller Bearing

- Which of the following belt conveyors have low volume carrying capacity?

B. Troughed belts

C. Both a. and b.

D. None of the above

- What is the mass capacity of flat belt conveyor if volumet- ric capacity 212.1 m•/hr? (p

2000 kg/m°)

A. 420.5 ton/hr

B. 416.35 ton/hr

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D. 428.5 ton/hr

- Which of the following is not a hoisting equipment with lifting gear?

A. Cage elevators

B. Jib cranes

C. Pulleys

D. - Dry powder solid materials are transported by a conveyor

A. Belt

B. Bucket

C.

D. None of these - The layer of a belt is gener- ally called as

A. Ply

B. Layer

C. Segment

D. Sediment - A shorter centre distance is always preferred in belt drives.

A.

B. No due to stability

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C. Yes due to instability

D. No due to instability

- Which of the following is a

property of bulk load?

A. Hardness

B.

C. Suspension part

D. Weight - Principle of’Unit load’ states that

A.

lots

B. one unit should be moved at a time

C. both ‘a’ and ‘b’

D. none of the above - Which belt conveyor pre- vents sliding down of mate- rial at an inclination of 550 with

horizontal?

A. Flat belt conveyor

B. Troughed belt conveyor

D. Woven wire belt conveyors

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S2. The recommended factor

of safety for conveyor belt

A. 5 to 10

C. 15 to 20

D. Above 20

- “Which of the following

statements is false foz

troughed belt conveyors? - Troughed belt conveyors use 6exib1e belts
- They contain five idlers
- Depth of trough decreases with

increasing number of idlers - flexibility of belt increases

as depth of trough decreases“

A. 1 and 2

B. 2 and 3

C.

D. 1 and 4 - A horizontal belt conveyor is used for transporting the bulk material having mass density

of 5 ton/m3. The

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swcharge factor ’C’ for the belt is 0.1, while the belt width is 1000 mm. If the belt speed is 2.£

m›fs, determine the volumetric capacity of conveyor

A.

B. 612.10 m’/hr

C. 66S.6 8 m3/hr

D. 640.56 m3/hr

s3. Which discharge method provides only intermediate discharge for low speed flat belt conveyor?

A.

B. Tripper discharge

C. Both a. and b.

D. None of the above

- In case of belt conveyors, a tripper is used to

A. facilitate loading

C. prevent shock loading

D. prevent damage to belt

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- Power transmitting capacity of V

belts is more than that of flat belt.

A. Yes

B. No

C. Only for V angle > 1S

D. None of the listed

S6. The thickness of belt is usually specified in terms of

A. index number

B. merit number

C.

D. thickness in mm - Ntass capacity of a conveyor is 200 ton/hr, if speed of the belt is 4 m/s then what is the

width of horizontal flat belt conveyor carrying the load? (Sweharge factor = 0.075 A p = 1000

*g/’•’)

A. 499.23 mm

B. 500.0 mm

D. Insufficient data

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S8. V -belt is used where the distance

between the two shafts is …..

A. Not more than 10 m B.

C. More than 10 m

D. None of above

- What is the mass capacity of flat belt conveyor if volumetric capacity 0.55 m°/hr? (p = 1500

kgZm3)

A. 825 tons/hr

C. 2. 727 tons/hr

D. 2722 kg/hr

- Flat belt are used where the

distance between the two shaft is

A.

B. Not Vore than 5 m

C. Vore t:han 10 m

D. Upto 30 m

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- A triple ply belt conveyor is re- quired to transport 2 ton of iron ore per how at a conveyor

speed of 90 m/ min through a distance of 1000m and a height of 300 m. what is the maxi- mum

suitable inclination for the con- veyor.

A. 1 S

C. 17.4

D. 18.2

- Determine the capacity of con- veyor in ton/hr, if £lass density is 2 tonfm3,Be1t speed

is 1.7Smfs, Belt width, B= 0.8 m and K for swcharge angle 290 =2.35x1O‘^

B. 2.300 tone/hr

C. 3.325 tone/hr

D. 4.320 tone/hr

- Which of the following is a prop- erty of unit load?

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B. Cake forming tendency

C. Lump size

D. density

- The – – take up device consist of two bent pulleys, a take up pulley and dead weights

A. Screw Type Take

B. Winch Operated Type Take

C. Horizontal Gravity Type

Take - The point where material is loaded on the belt conveyor is known as

A. Head end

B. Tail end

D. Discharge point

- The angle of swcharge (f) will al- ways be ———– than the angle of re- pose{Y)

A. Greater

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C. Equal

D. None of above

- The angle of repose depends on

A. shape of the material

B. smoothness of the material

C. degree of fineness of the material - Pwpose of using idlers

A. To support the conveyor belt on lower run

B. To provide support to belt at loading point

C. To align the belt on the pul- ley - Volumetric capacity of horizontal belt conveyor is given as

A. Q= Mb2v m’/s

B. Q= kb2v m’/s

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D. M p‹Q

- In abrasive load transportation ap- plications idlers used are

A. Roller type idlers with ball bear— ings

B. Roller type idlers with roller bear-

ings

D. All of above

- In material handling equipment through belt conveyors is classified as

B. Surface and overhead Equipment

C. Hoisting Equipment

D. Elevators.

- 8elt take up device is used in belt

conveyor

belt

B. To adjust load on belt

C. To support load on belt

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D. All of above

- Which of the following is the least preferred conveyor for handling glue?

A. Belt conveyor

B. Continuous flow conveyor

D. Screw conveyor

- The angle of repose for anthracite

coal is around

A. 11

B. 1 7

D. 37

- Chains for material handling equipment are generally made of

A. cast iron

B. wrought iron

C. mild steel - o›verbr1dge crane has

A. transverse movement

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B. longitudinal movement

D. None of the above

- When the belt speed increases

A. power transmitted increases

B. power transmitted decreases

D. power transmitted remains the same

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UNIT 1¥: Design of Cylinders and Pressure tfessels

Syllabusi Design of C ylinders: and thick cylinders, Lame’s equation, Clavarino’s and

Bernie’s equations, design of hydraulic and pneumatic cylinders, auto-frettage and com-

pound cylinders,(No Derivation) gasketed joints in cylindrical vessels (No derivation).

Design of PresslZre vessel : Modes of failures in

pressure vessels, unfired presswe vessels, clas- sification of presswe vessels as per I.

2825 categories and types of welded joints, weld joint efficiency, stresses induced in presswe

vessels, materials for pressure vessel, thickness of cylin- drical shells and design of end closwes

as per

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code, nozzles and openings in presswe vessels, reinforcement of openings in sheP and end clo- swes

- area compensation method, types of ves- sel supports (theoretical treatment only).

- In thick cylinders, the radial stress across the thickness of cylinder

A. remains uniform throughout

varies from maximum value at the inner swface to minimum value at the outer swface

. varies from maximum value at the outer swface to minimum

value at the inner surface

- Auto frettage is,

A. a surface coating process of cylinders for corrosion resis- tance

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B. a heat treatment process for cylinders to relieve residual stresses

D. a swface hardening process of cylinder to improve wear resis- tance

- Auto frettage is achieved

by,

A. Compound cylinder

B. overloading the cylinder before

putting it in-service

winding a wire under tension around the cylinder - Presswe vessels are not made of rectangular shape, because

A. These are difficult to fabri-

cate

B.

c. They do not give pleasing ap- pearance

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D. It has been practice to use cylin- drical vessels

- Which of the following is not

an unfired presswe vessel?

A. Heat exchanger

B. Storage vessels

D. None of the above

- In unfired presswe vessels, category A consists of

A. joints connecting flanges and flat heads

B. welded joints connecting noz- zles with main shell

circumferential

joints

welded

- Which type of welded joints are not included in class 3 presswe vessels?

A. Double welded butt joint with full penetration

B. Single welded but joint with back strip

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D. None of the above

- Which type of welded joints are not included in class 3 presswe vessels?

A. Double welded butt joint with full penetration

B. Single welded but joint with

back strip

D. None of the above

- Class 1 presswe vessels

having weldedjoints are

B. partially graphed

C. spot radio-graphed

D. not radio-graphed

- Class 2 presswe vessels

radio-

having weldedjoints are

A. fully radio-graphed

B. partially graphed

D. not radio-graphed

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D. None of the above

- Which type of welded joints are not included in class 3 presswe vessels?

A. Double welded butt joint with full penetration

B. Single welded but joint with

back strip

D. None of the above

- Class 1 presswe vessels

having weldedjoints are

B. partially graphed

C. spot radio-graphed

D. not radio-graphed

- Class 2 presswe vessels

radio-

having weldedjoints are

A. fully radio-graphed

B. partially graphed

D. not radio-graphed

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- Class 3 presswe vessels

having welded joints are

A. fully radio-graphed

B. partially graphed

C. spot radio-graphed

D.

radio-

- A cylinder is considered as thin cylinder when the ratio of inner diameter to the wall

thickness is,

A.

B. equal to 15

C. less than 15

D. none of these criteria - Thin spherical vessels sub- jected to internal presswe, the circumferential and prin- cipal

stresses are

A.

B. circumferential • principal

stresses

C. circumferent‹ial stresses

principal

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D. circumferential = 2 (principal

stresses)

- Longitudinal stress in a thin

cylinder is

A. Equal to the hoop stress

B. Twice the hoop stress

C.

D. One-fourth of hoop stress - In thin cylinders, the circum- ferential stress is,

A.

B. ‘la (longitudinal stress)

C. */4 (longitudinal stress)

D. 4(longitudinal stress) - The thickness of thin cylin- der is determined on the basis of

A. radial stress

B. longitudinal stress

D. principal shear stress

- The thickness of thick cylin- drical shell with closed ends and made of ductile material is

determined by

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A. Lame’s equation

C. Birnie’s equation

D. Barlow’s equation

- The thickness of thick cylin- drical shell with open ends and made of ductile material is

determined by

A. Lame’s equation

B. Clavarino’s equation

D. Barlow’s equation

- The thickness of thick cylin- drical shell with closed ends and made of brittle material is

determined by

A.

B. Clavarino’s equation

C. Birnie’s equation

D. Barlow’s equation - The thickness of high- presswe oil and gas pipes is determined by

A. Lame’s equation

B. Clavarino’s equation

C. Birnie’s equation

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D.

- In thick cylinders, the tangential stress across the thickness of cylinder

A. remains uniform throughout

B. varies from internal presswe at the inner surface to zero at the outer surface

C.

D. varies from maximum value at the outer swface to minimum value at the inner surface

- A Presswe vessels designed for operation below -200

A. Class 3

B. Class 2

D. All of above

- What is the weld joint effi- ciency if presswe vessel is fabricated with single full fil- let

lap joint?

A. 1

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C. 0.65

D. 0.85

- Class 1 presswe vessels are to be designed according to ’Code for unfired vessel

IS-2829′ when

A.

B. operating temperatwe is more

than-200C

C. liquefied petroleum gas is stored

D. thickness of shell is less than

38mm

- Weld joint efficiency is maximum when the presswe vessel is welded by

A. single-welded butt joint with backing strip

B. single-welded butt joint with-

out backing strip

D. none of the above

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- Design presswe for unfired presswe vessels is 1.05 times of

B. maximum working pressure

C. hydrostatic test pres-

sure

D. none of the above

- The end-closwe for tall verti-

cal pressure vessel is

B. conical head

C. Tori-spherical head

D. flat head

- The end-closwe for Horizon- tal presswe vessel is

A. hemispherical head

B. conical head

C. Tori-spherical head - The end-closwe for tankers

of milk, petrol or diesel is

A. hemispherical head

B. conical head

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D. flat head

- head1s the znost economical for cylindrical vessels designed for oper- ating at high

presswe (> 15 atm.)

A. Hemispherical

B. Dished

D. Conical

- Lug support is meant for sup- porting vessels.

A. Large horizontal cylindrical

B. Tall but empty

D. Thick walled tall

S2. This equation of thick-

ness is for t

= o o *ri ¿ ,},}, i cj

A.

B. Tori spherical dished head

C. Hemispherical head

D. Conical head

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- This equation of thickness is

/1 f fJ I

for t x rs‹› rr›, — o. z ¿› i

A. Plain formed head

C. Hemispherical head

D. Conical head

- A horizontal cylindrical presswe vessel of internal diameter of l000mm is sub- jected to an

internal presswe of liFtpa. The shell as well as heads is made up of low alloy steel with

ultimatetensile

strength of 420 N/mm2, Determine thickness of flat head. (corrosion allowance

b 3 Weld effi.=0.85)

A. 72 mm

C. 64.56 mm

D. 79.2 mm

3S. A horizontal cylindrical presswe vessel of internal diameter of 1000 mm is sub- jected to an

internal presswe

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of 1 htpa. The shell as well as heads are made up of low alloy steel with a ultimate tensile

strength of 420 N/

mm2, Determinethickness of conical head with semi cone angle 300). (corrosion al- lowance = 3A Weld

effi.=0.85 )

A. 10.74 mm

C. 9.46 mm

D. 12 mm

- A cylinder presswe vessel is made from stainless steel. Determine thickness of vessel shell

when internal diameter is 1500mm, design pressure !s 0.44MPa, Per- missible stress for material

is 130Nfmm2 and weld joint efficiency is 0.85.

B. 5 mm

C. 7 mm

D. 4 mm

- A gasket is made of

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A. asbestos or cork

B. lead, copper or aluminum

C. vulcanized rubber

D.

- Selection of welding process

does not depend on

A. Thickness of material

B. Availability of equipment

C. Economics of the process - A Presswe vessels designed for operation between 00 to 2500

A.

B. Class 2

C. Class 1

D. All of above - The wall thickness of thin cylindrical shell with hemi- spherical ends is that of

the spherical ends.

A. Equal to

B.

C. Less than

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D. Either (B) or (C); depends on maximum permissible internal presswe

- A cylindrical presswe vessel

in horizontal condition is

generally supported on a

support.

A. Lug

B. Skirt

D. Guy wire

- Vertical vessels are not sup-

ported by

A. Brackets

B. Skirts

C. Columns - Corrosion allowance in the design of presswe vessel/ chemical equipment is not necessary, if

A. Plain carbon steel and cast iron

parts are used

B. Wall thickness is > 30 mm

C. Material of construction is high alloy steel

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D.

- For high presswe process equipment/vessels, the con- nected nozzle should be

A. Welded

B. Screwed

C.

D. Brazed - For high presswe process equipment/vessels, the con- nected nozzle should be

A. Welded

B. Screwed

C.

D. Brazed - In presswe vessels if rein- forcing material is placed on the inside or outside swface of

vessel wall is known as

A. Internal Reinforce-

ment

B.

C. Balance Reinforcement

D. External Reinforcement - A cylindrical presswe vessel

is subjected to operating

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presswe of 0.55 Mpa and cor- rosion allowance of 2. What is the thickness of presswe vessel shell

if its internal diameter is 2000 mm? (call =

120 N/mm2 AqI = 0.7S)

A. 6.5 mm

B. 7 mm

D. 9.5 mm

- A cylindrical presswe vessel is subjected to an internal presswe of 2 £4pa on internal diameter

of 1500 mm. The vessel is fabricated with

› ›ouble weld butt joint and radio-graphed. What is the thickness of Plain formed head, if head

made of alloy steel has an ultimatetensile

strength of 450 N/mm2 (cor-

rosion allowance 3)

A. 60 mm

B.

C. 68 mm

D. 79 mm

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Scanned with CamScanner - A forged cylinder is subjected to large internal presswe ,so as to expand the internal di-

ameter causing overstrain is called

A. Compound Cylinder

C. Tape wound cylinder

D. Wire wound cylinder

- The hydraulic cylinder made up of gray cast iron FG 300 has an inner diameter of 220 mm. The

maximum internal presswe is 18 Stpa. If FOS is - Find thickness of cylinder

and outer dia.

A. 12 A22S mm

B.

C. 18 A23S mm

D. 17 A260 mm

S1. A closed cylinder of 5OOmm inner diameter is to be designed to withstand an internal presswe of

35 NtPa. If the cylinder is made of plain carbon steel 15C8.

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(Sut=440N/mm2,Syt=240 N/

mm*, v=0.29 and FOS= 1.5). What is the thickness of the cylinder wall by 24aximum principal stress

theory?

A. 58 mm

B. 62 mm

C. 69 mm

D. 72 mm

- A closed cylinder of 5OOmm inner diameter is to be designed to withstand an internal presswe of

3524Pa. If the cylinder is made of plain carbon steel 15C8. (Sut=440N/mm2,Syt=240N/ mm2, v=0.29 and

FOS=1.5). What is the thickness of the cylinder wall by iUaximum principal strain theory?

A. 74 mm

B. 64 mm

C. 69 mm D. - A closed cylinder of 75Omm

inner diameter is to be

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designed to withstand an internal presswe of 50MPa. If the cylinder is made of plain carbon steel

15C8.

(Sut=440N/mm2, Syt=24O N/

mm2, v=0.29 and FOS=1.5).

What is the thickness of the cylinder wall by Maximum shear stress theory?

A. 144 mm

B. 216 mm

C. 23 1 mm

D.

- A closed cylinder of 750mm inner diameter is to be designed to withstand an internal presswe of

50ñtPa. If the cylinder is made of plain carbon steel 15C8. (Sut=440N/mm2,Syt=24ON/ mm2, v=0.29 and

FOS=1.5). What is the thickness of the cylinder wall by distortion energy theory?

A. 184 mm

B. 176 mm

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C. 181 mm

- A horizontal cylindrical presswe vessel of internal diameter of 1000mm is sub- jected to an

internal presswe of l£tpa. The shell as well as heads is made up of low alloy steel with ultimate

tensile strength of 420 N/mm2, Determinethickness of flat head. (corrosion al1owance

3 & Weld effi.=O.85)

A. 72 mm

B.

C. 64.56 mm

D. 79.2 mm - A horizontal cylindrical presswe vessel of internal diameter of 1000 mm is sub- jected to an

internal presswe of 1 Nlpa. The shell as well as heads are made up of low alloy steel with a

ultimate tensile strength of 420 N/

mm2, Determine thickness

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of plain form head. (corro- sion allowance 3 A Weld effi.=0.85)

A. 42.62 mm

B. 37.2 mm

D. 48 mm

- A horizontal cylindrical pressure vessel of internal diameter of 1000 mm 1s sub- jected to an

internal presswe of 1 hlpa. The shell as well

as heads are made up of low alloy steel with a ultimate tensile strength of 420 N/ mm2, Determine

thickness of Torispherical dished

head. (corrosion allowance

3 A Rc=S00 mm A Weld effi.=0.85)

A. 9.74 mm

B. 12.84 mm

D. 11 mm

- A horizontal cylindrical

presswe vessel of internal

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diameter of 1000 mm is sub- jected to an internal presswe of 1 Mpa. The shell as well as heads

are made up of low alloy steel with a ultimate tensile strength of 420 N/

mm2, Determine thickness of conical head with semi cone angle 300). (corro- sion allowance 3A Weld

effi.=o.85 )

A. 10.74 mm

B.

C. 9.46 mm

D. 12 mm

- In a presswe vessel contain- ing multiple openings of var- ious dimensions at different parts,

stress concentration

at the edges of the opening

is maximum which becomes negligibly small beyond the area covered by times the hole

diameter.

A. 2

B. 5

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C. 10

D. 20

- Design presswe for un-

ñredpresswe vessels is

times of maximum

working presswe

A. 1..05

B. 2

C. 0.5

D. 1.5 - A cylindrical presswe vessel

of inner diameter 1875 mm is subjected to internal presswe of 1.2075 N/mm•. The corrosion allowance

is

1.5mm and weld efficiency

for nozzle is 0.85, the allow- able tensile stress is 140 N/ mm°, find thickness of Vessel Shell?

A. 48 mm

B. 36 mm

C. 24 mm - A cylinder presswe vessel is made from stainless steel.

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Determine thickness of vessel shell when internal diameter is 1500mm, design presswe is 0.44MPa,

Permis- sible stress for material is 130N/mm2 and weld joint efficiency is 0.85.

A. 3mm

B. 5mm

C. 7mm

D. 9mm

- A horizontal cylindrical presswe vessel of internal diameter of 3000 mm is sub- jected to an

internal presswe of 2Ntpa. The shell as well as heads is made up of low alloy steel with a ultimate

tensile

strength of 420 N/mm2, De- termine thickness of conical head with semi cone angle 300). (corrosion

allowance = 3b Yfeld effi.=0.85 )

A. 40.74 mm

C. 29.46 mm

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D. 35 mm

- A horizontal cylindrical presswe vessel of internal diameter of 3000 mm is sub- jected to an

internal presswe of 2Ntpa. The shell as well

as heads is made up of low

alloy steel with a ultimate tensile strength of 420 N/ mm•, Determine thickness of Hemispherical

head. (cor-

rosion allowance 3 A Weld

effi.=0.85)

B. 13.23 mm

C. 16.78 mm

D. 19 mm

- A horizontal cylindrical presswe vessel of internal diameter of 1500mm is sub- jected to an

internal presswe of 3 Ntpa. The shell as well as heads is made up of low alloy steel with

ultimatetensile strength of 420 N/mm2, Determine thickness of flat

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head. (corrosion allowance 3 A Weld effi.=0.85)

B. 168.48 mm

C. 164.56 mm

D. 179.2 mm

- A horizontal cylindrical presswe vessel of internal diameter of 3000 mm is sub- jected to an

internal presswe of 2Ntpa. The shell as well as heads is made up of low alloy steel with a

ultimatetensile

strength of 420 N/mm2, Determine thickness of Tori- spherical dished head. (corro- sion allowance

3 A Rc=1290 mm A Weld effi.=0.85)

A. 29.74 mm

B. 22.84 mm

D. 31 mm

- A horizontal cylindrical presswe vessel of internal diameter of 1500 mm is sub- jected to an

internal presswe

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of 3 htpa. The shell as well as heads are made up of low alloy steel with a ultimate tensile

strength of 420 N/ mm2, Determinethickness of plain form head. (corro- sion allowance 3 A Weld

effi.=0.8S)

A. 105.62 mm

B. 107.2 mm

D. 96.46 mm

- A horizontal cylindrical presswe vessel of internal diameter of 3000 mm is sub- jected to an

internal presswe of 2Mpa. The shell as well as heads is made up of low alloy steel with a ultimate

tensile strength of 420 N/

mm°, Determinethickness of plain form head. (corro- sion allowance 3 A Weld effi.=0.85)

A. 172.62 mm

B. 167.2 mm

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D. 178 mm

- A horizontal cylindrical presswe vessel of internal diameter of 1500 mzn1s sub- jected to an

internal presswe of 3 Ntpa. The shell as well

as heads are made up of low alloy steel with a ultimate tensile strength of 420 N/ mm2, Determine

thickness of Torispherical dished head. (corrosion allowance

3 A Re=1100 mm A Weld

effi.=0.85)

A. 39.74 mm

B. 30.84 mm

D. 41 mm

- A horizontal cylindrical presswe vessel of internal diameter of 2000 mm is sub- jected to an

internal presswe of 2 Mpa. The shell as well

as heads are made up of low alloy steel with a ultimate

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tensile strength of 420 N/ mm2, Determine thickness of Torispherical dished head. (corrosion

allowance

3 & Rc=15OO mm & Weld

effi.=O.85) A. 29.74 mm

B. 32.84 mm

D. 35 mm

- A horizontal cylindrical presswe vessel of internal diameter of 2000 mm is sub- jected to an

internal presswe of 2 £4pa. The shell as well

as heads are made up of low alloy steel with a ultimate tensile strength of 420 N/ mm°, Determine

thickness

of plain form head. (corro-

sion allowance 3 A Weld

effi.=O.85)

A. 1 12.62 mm

B. 103.2 mm

Co

D. 114 mm

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Scanned with CamScanner - A horizontal cylindrical presswe vessel of internal diameter of 2000mm is sub- jected to an

internal presswe of 2Ntpa. The shell as well as heads is made up of low alloy steel with

ultimatetensile

strength of 420 N/mm2, Determinethickness of flat head. (corrosion allowance 3 A Weld effi.=0.85)

A. 172 mm

B. 188.20 mm

D. 179.2 mm

- A horizontal cylindrical

presswe vessel of internal diameter of 1500 mm is sub- jected to an internal presswe of 3 £4pa. The

shell as well

as heads are made up of low alloy steel with a ultimate tensile strength of 420 N/ mm2, i:determine

thickness of Hemispherical head. (cor-

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rosion allowance = 3 A Weld

effi.=0.85)

B. 13.23 mm

C. 16.78 mm

D. 11.23 mm

- A horizontal cylindrical presswe vessel of internal diameter of 1500 mm is sub- jected to an

internal presswe of 3 Ntpa. The shell as well as heads are made up of low alloy steel with a

ultimate tensile strength of 420 N/

mm°, Determinethickness of conical head with semi cone angle 300). (corrosion al- lowance 3A Weld

effi.=0.85 )

A. 30.74 mm

C. 19.46 mm

D. 32 mm