Stress and Strain MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Stress and Strain, a fundamental topic in the field of Mechanics of Materials. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Stress and Strain MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Stress and Strain mcq questions that explore various aspects of Stress and Strain problems. Each MCQ is crafted to challenge your understanding of Stress and Strain principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Mechanics of Materials tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Stress and Strain MCQs are your pathway to success in mastering this essential Mechanics of Materials topic.

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Stress and Strain MCQs | Page 6 of 9

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Q51.
Which one of the following pairs is NOT correctly matched?

a.

Visco-elastic – small plastic zone

b.

Orthotropic material – different properties in three perpendicular directions

c.

Strain hardening material – stiffening effect felt at some stage

d.

Isotropic material – same physical property in all directions at a point

Discuss
Answer: (a).Visco-elastic – small plastic zone
Q52.
The phenomenon of slow extension of materials having a constant load, i.e. increasing with the time is called

a.

Creeping

b.

Yielding

c.

Breaking

d.

None of the mentioned

Discuss
Answer: (a).Creeping
Q53.
What will be the elastic modulus of a material if the Poisson’s ratio for that material is 0.5?

a.

Equal to its shear modulus

b.

Three times its shear modulus

c.

Four times its shear modulus

d.

Not determinable

Discuss
Answer: (b).Three times its shear modulus
Q54.
A solid metal bat of uniform diameter D and length L is hung vertically from a ceiling. If the density of the material of the bar is 1 and the modulus of elasticity is E, then the total elongation of the bar due to its own weight will be ____________

a.

L/2E

b.

L²/2E

c.

E/2L

d.

E/2L²

Discuss
Answer: (b).L²/2E
Q55.
A bar of diameter 30mm is subjected to a tensile load such that the measured extension on a gauge length of 200mm is 0.09mm and the change in diameter is 0.0045mm. Calculate the Poissons ratio?

a.

1/3

b.

1/4

c.

1/5

d.

1/6

Discuss
Answer: (a).1/3
Q56.
What will be the ratio of Youngs modulus to the modulus of rigidity of a material having Poissons ratio 0.25?

a.

3.75

b.

3.00

c.

1.5

d.

2.5

Discuss
Answer: (d).2.5
Q57.
An experiment was done and it was found that the bulk modulus of a material is equal to its shear modulus. Then what will be its Poissons ratio?

a.

0.125

b.

0.150

c.

0.200

d.

0.375

Discuss
Answer: (a).0.125
Q58.
A bar of 40mm dia and 40cm length is subjected to an axial load of 100 kN. It elongates by 0.005mm. Calculate the Poissons ratio of the material of bar?

a.

0.25

b.

0.28

c.

0.30

d.

0.33

Discuss
Answer: (d).0.33
Q59.
What will be the approximate value of shear modulus of a material if the modulus of elasticity is 189.8 GN/m² and its Poissons ratio is 0.30?

a.

73 GN/m²

b.

80 GN/m²

c.

93.3 GN/m²

d.

103.9 GN/m²

Discuss
Answer: (a).73 GN/m²
Q60.
What will be the modulus of rigidity if the value of modulus of elasticity is 200 and Poissons ratio is 0.25?

a.

70

b.

80

c.

125

d.

250

Discuss
Answer: (b).80
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