The ratio of elongation in a prismatic bar due to its own weight (W) as compared to another similar bar carrying an additional weight (W) will be

Question

The ratio of elongation in a prismatic bar due to its own weight (W) as compared to another similar bar carrying an additional weight (W) will be

A. 1 : 2

B. 1 : 3

C. 1 : 4

Correct Answer :

B. 1 : 3

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Comment

A molecule consisting of one atom is known as

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The efficiency of a Carnot engine depends on

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Which of the following has the minimum atomic mass?

A. Oxygen

D. Carbon

Discuss this answer

The given figure shows the Mohr's circle of stress for two unequal and like principal stresses (σx and σy) acting at a body across two mutually perpendicular planes. The normal stress on an oblique section making an angle θ with the minor principle plane is given by

A. OC

B. OP

C. OQ

D. PQ

Discuss this answer

One kg of ethylene (C2H4) requires 2 kg of oxygen and produces 22/7 kg of carbon dioxide and __________ kg of water or steam.

A. 9/7

B. 11/7

C. 7/4

D. 1/4

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The entropy may be expressed as a function of

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For which material the Poisson's ratio is more than unity

A. Steel

B. Copper

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The kinetic energy per kg molecule of any gas at absolute temperature T is equal to (where Ru = Universal gas constant)

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Which of the following process can be made reversible with the help of a regenerator?

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The compression ratio for Diesel engines is

A. 3 to 6

B. 5 to 8

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A definite area or a space where some thermodynamic process takes place is known as

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Which of the following is an irreversible cycle?

A. Carnot

Discuss this answer

The air standard efficiency of an Otto cycle is given by (where r = Compression ratio, and γ = Ratio of specific heats)

Discuss this answer

The heat and mechanical energies are mutually convertible. This statement was established by

A. Boyle

C. Joule

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A simply supported beam with a gradually varying load from zero at B and w per unit length at A is shown in the below figure. The shear force at B is equal to

A. wl/6

B. wl/3

C. wl

D. 2wl/3

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For a simply supported beam of length l, when a concentrated load W is applied in the centre of the beam, the maximum deflection is

Discuss this answer

The ratio of maximum shear stress developed in a rectangular beam and a circular beam of the same cross-sectional area is

A. 2/3

B. 3/4

C. 1

D. 9/8

Discuss this answer

The heating of gas at constant volume is governed by

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The efficiency of Joule cycle is

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A bar of copper and steel form a composite system, which is heated to a temperature of 40°C. The stress induced in the copper bar will be

C. Shear

D. Zero

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A process of heating crude oil to a high temperature under a very high pressure to increase the yield of lighter distillates, is known as

Discuss this answer

An adiabatic process is one in which

Discuss this answer

Diamond riveted joint can be adopted in the case of following type of joint

Discuss this answer

The behaviour of super-heated vapour is similar to that of

B. Air

C. Steam

Discuss this answer

The deformation of a bar under its own weight compared to the deformation of same body subjected to a direct load equal to weight of the body is

A. Same

B. Double

C. Half

Discuss this answer

The layer at the centre of gravity of the beam as shown in the below figure, will be

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The following cycle is used for air craft refrigeration

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The general law for the expansion or compression of gases, is

A. pv = C

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Which of the following is an intensive property of a thermodynamic system?

A. Volume

C. Mass

D. Energy

Discuss this answer

The fuel mostly used in cement industry and in metallurgical processes is

D. Coke

Discuss this answer

Answer 1

D. 1 : 2.5

Answer 2

A. Mono-atomic

Answer 3

B. Di-atomic

Answer 4

C. Tri-atomic

Answer 5

D. Poly-atomic

Answer 6

A. Working substance

Answer 7

B. Design of engine

Answer 8

C. Size of engine

Answer 9

D. Temperatures of source and sink

Answer 10

B. Sulphur

Answer 11

C. Nitrogen

Answer 12

A. Pressure and temperature

Answer 13

B. Temperature and volume

Answer 14

C. Heat and work

Answer 15

D. All of these

Answer 16

C. Aluminium

Answer 17

D. None of the above

Answer 18

A. R_u × T

Answer 19

B. 1.5 R_u × T

Answer 20

C. 2 R_u × T

Answer 21

D. 3 R_u × T

Answer 22

A. Constant pressure process

Answer 23

B. Constant volume process

Answer 24

C. Constant pvn process

Answer 25

D. All of these

Answer 26

C. 15 to 20

Answer 27

D. 20 to 30

Answer 28

A. Thermodynamic system

Answer 29

B. Thermodynamic cycle

Answer 30

C. Thermodynamic process

Answer 31

D. Thermodynamic law

Answer 32

B. Stirling

Answer 33

C. Ericsson

Answer 34

D. None of the above

Answer 35

A. 1 - r^{γ - 1}

Answer 36

B. 1 + r^{γ - 1}

Answer 37

C. 1 - (1/ r^{γ - 1})

Answer 38

D. 1 + (1/ r^{γ - 1})

Answer 39

B. Charles

Answer 40

D. None of these

Answer 41

A. 5WL³/ 384EI

Answer 42

B. WL³/384EI

Answer 43

C. WL³/ 348EI

Answer 44

D. WL³/ 48EI

Answer 45

A. Boyle's law

Answer 46

B. Charles' law

Answer 47

C. Gay-Lussac law

Answer 48

D. Avogadro's law

Answer 49

A. Greater than Carnot cycle

Answer 50

B. Less than Carnot cycle

Answer 51

C. Equal to Carnot cycle

Answer 52

D. None of these

Answer 53

A. Tensile

Answer 54

B. Compressive

Answer 55

A. Cracking

Answer 56

B. Carbonisation

Answer 57

C. Fractional distillation

Answer 58

D. Full distillation

Answer 59

A. No heat enters or leaves the gas

Answer 60

B. The temperature of the gas changes

Answer 61

C. The change in internal energy is equal to the mechanical workdone

Answer 62

D. All of the above

Answer 63

A. Butt joint

Answer 64

B. Lap joint

Answer 65

C. Double riveted lap joints

Answer 66

D. All types of joints

Answer 67

A. Perfect gas

Answer 68

D. Ordinary gas

Answer 69

D. Four times

Answer 70

A. In tension

Answer 71

B. In compression

Answer 72

C. Neither in tension nor in compression

Answer 73

D. None of these

Answer 74

A. Brayton cycle

Answer 75

B. Joule cycle

Answer 76

C. Carnot cycle

Answer 77

D. Reversed Brayton cycle

Answer 78

B. pv = m R T

Answer 79

C. pvⁿ = C

Answer 80

D. pv^γ = C

Answer 81

B. Temperature

Answer 82

A. Wood charcoal

Answer 83

B. Bituminous coke

Answer 84

C. Pulverised coal

The ratio of elongation in a prismatic bar due to its own weight (W) as compared to another similar bar carrying an additional weight (W) will be

Correct Answer :

Show all Strength of Materials MCQ

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