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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Q61.
A circular rod of dia 30 mm and length 200mm is extended to 0.09mm length and 0.0045 diameters through a tensile force. What will be its Poissons ratio?

a.

0.30

b.

0.31

c.

0.32

d.

0.33

Discuss
Answer: (d).0.33
Q62.
The Poissons ratio of a material is 0.3. what will be the ratio of Youngs modulus to bulk modulus?

a.

1.4

b.

1.2

c.

0.8

d.

0.6

Discuss
Answer: (b).1.2
Q63.
What is the bulk modulus of elasticity?

a.

The ratio of shear stress to shear strain

b.

The ratio of direct stress to direct strain

c.

The ratio of volumetric stress to volumetric strain

d.

The ratio of direct stress to volumetric strain

Discuss
Answer: (d).The ratio of direct stress to volumetric strain
Q64.
For a material, Youngs modulus is given as 1.2 x 10⁵ and Poissons ratio 1/4. Calculate the bulk modulus.

a.

0.7 x 10⁵

b.

0.8 x 10⁵

c.

1.2 x 10⁵

d.

1.2 x 10⁵

Discuss
Answer: (b).0.8 x 10⁵
Q65.
Determine the Poissons ratio and bulk modulus of a material, for which Youngs modulus is 1.2 and modulus of rigidity is 4.8.

a.

7

b.

8

c.

9

d.

10

Discuss
Answer: (b).8
Q66.
The Youngs modulus of elasticity of a material is 2.5 times its modulus of rigidity. Then what will be its Poissons ratio?

a.

0.25

b.

0.33

c.

0.50

d.

0.60

Discuss
Answer: (a).0.25
Q67.
How the elastic constants E and K are related?

a.

E = 2K(1 – 2μ)

b.

E = 3K(1 – 2μ)

c.

E = 2K(1 – μ)

d.

E = K(1 – 2μ)

Discuss
Answer: (b).E = 3K(1 – 2μ)
Q68.
How many elastic constants does an isotropic, homogeneous and linearly elastic material have?

a.

1

b.

2

c.

3

d.

4

Discuss
Answer: (b).2
Q69.
The modulus of rigidity and the modulus of elasticity of a material are 80 GPa and 200 GPa. What will be the Poissons ratio of the material?

a.

0.25

b.

0.30

c.

0.40

d.

0.50

Discuss
Answer: (a).0.25
Q70.
Which of the following is true if the value of Poisson’s ratio is zero?

a.

The material is rigid

b.

The material is perfectly plastic

c.

The longitudinal strain in the material is infinite

d.

There is no longitudinal strain in the material

Discuss
Answer: (a).The material is rigid
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