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Question (1)

QN0035499

A long rod of radius which is fixed from one end is given a force of . The longitudinal strain developed will be [take ]

(A)
(B)
(C)
(D)

Correct Answer: B

Explanation:

strain

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Question (2)

QN0035500

The restoring force per unit area is known as

(A)
strain
(B)
elasticity
(C)
stress
(D)
plasticity

Correct Answer: C

Explanation:

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Question (3)

QN0035501

In magnitude hydraulic stress is equal to

(A)
hydraulic force
(B)
restoring force
(C)
hydraulic pressure
(D)
hydraulic strain

Correct Answer: B

Explanation:

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Question (4)

QN0035502

Substances which can be stretched to cause large strains are called

(A)
brittle
(B)
plastic
(C)
ductile
(D)
elastomerq

Correct Answer: D

Explanation:

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Question (5)

QN0035503

The reason for the change in shape of a regular body is

(A)
volume stress
(B)
longitudinal strain
(C)
shearing strain
(D)
metallic strain

Correct Answer: B

Explanation:

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Question (6)

QN0035504

Longidudinal stress depends on

(A)
area
(B)
length
(C)
volume
(D)
mass

Correct Answer: A

Explanation:

stress stress

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Question (7)

QN0035505

Which of the following types of stress causes no change in shape?

(A)
compressive stress
(B)
oblique stress
(C)
hydraulic stress
(D)
none of these

Correct Answer: B

Explanation:

Hydraulic stress is relevant to volumetric strain, , but there is no change in shape.

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Question (8)

QN0035506

An elevator cable is to have a maximum stress of to allow for appropriate safety factors. Its maximum upward acceleratiom is . If the cable has to support the total weight of of a loaded elevator, the area of crosssection of the cable should be

(A)
(B)
(C)
(D)

Correct Answer: A

Explanation:

Given, the breaking strength of cable The force carried by the cable,

The area of cross-section, .

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Question (9)

QN0035507

To break a wire, a force of is required. If the density of the material is , then the length of the wire which will break by its own weight will be

(A)
(B)
(C)
(D)

Correct Answer: A

Explanation:

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Question (10)

QN0035508

A light rod of length suspended from the ceiling horizontally by means of two vertical wires of equal length. A weight is hung from a light rod as shown in figure. The rod hung by means of a steel wire of cross-sectional area and brass wire of cross-sectional area . To have equal stress in both wires,

(A)
(B)
(C)
(D)

Correct Answer: D

Explanation:

For stress to be equal,

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Question (1)

A long rod of radius which is fixed from one end is given a force of . The longitudinal strain developed will be [take ]

Explanation:

Link:

Question (2)

The restoring force per unit area is known as

Explanation:

Link:

Question (3)

In magnitude hydraulic stress is equal to

Explanation:

Link:

Question (4)

Substances which can be stretched to cause large strains are called

Explanation:

Link:

Question (5)

The reason for the change in shape of a regular body is

Explanation:

Link:

Question (6)

Longidudinal stress depends on

Explanation:

Link:

Question (7)

Which of the following types of stress causes no change in shape?

Explanation:

Link:

Question (8)

An elevator cable is to have a maximum stress of to allow for appropriate safety factors. Its maximum upward acceleratiom is . If the cable has to support the total weight of of a loaded elevator, the area of crosssection of the cable should be

Explanation:

Link:

Question (9)

To break a wire, a force of is required. If the density of the material is , then the length of the wire which will break by its own weight will be

Explanation:

Link:

Question (10)

Explanation:

Link:

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