Strain Energy and Resilience MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Strain Energy and Resilience, 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 Strain Energy and Resilience 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 Strain Energy and Resilience mcq questions that explore various aspects of Strain Energy and Resilience problems. Each MCQ is crafted to challenge your understanding of Strain Energy and Resilience 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 Strain Energy and Resilience MCQs are your pathway to success in mastering this essential Mechanics of Materials topic.

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Strain Energy and Resilience MCQs | Page 5 of 6

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Q41.
A uniform bar has a cross sectional area of 700mm and a length of 1.5m. if the stress at the elastic limit is 160 N/mm, what will be the value of gradually applied load which will produce the same extension as that produced by the suddenly applied load above?

a.

100kN

b.

110kN

c.

112kN

d.

120kN

Discuss
Answer: (c).112kN
Q42.
A tension bar 6m long is made up of two parts, 4m of its length has cross sectional area of 12.5cm while the remaining 2m has 25cm. An axial load 5tonnes is gradually applied. What will be the total strain energy produced if E = 2 x 10โถ kgf/cm²?

a.

240kgf/cm

b.

242kgf/cm

c.

264kgf/cm

d.

270kgf/cm

Discuss
Answer: (b).242kgf/cm
Q43.
What is the strain energy stored in a body when the load is applied with impact?

a.

ฯƒE/V

b.

ฯƒE²/V

c.

ฯƒV²/E

d.

ฯƒV²/2E

Discuss
Answer: (d).ฯƒV²/2E
Q44.
What is the value of stress induced in the rod due to impact load?

a.

P/A (1 + (1 + 2AEh/PL)^1/2)

b.

P/A (2 + 2AEh/PL)

c.

P/A (1 + (1 + AEh/PL)^1/2)

d.

P/A ((1 + 2AEh/PL)^1/2)

Discuss
Answer: (a).P/A (1 + (1 + 2AEh/PL)^1/2)
Q45.
What will be the stress induced in the rod if the height through which load is dropped is zero?

a.

P/A

b.

2P/A

c.

P/E

d.

2P/E

Discuss
Answer: (b).2P/A
Q46.
A weight of 10kN falls by 30mm on a collar rigidly attached to a vertical bar 4m long and 1000mm² in section. What will be the instantaneous stress (E=210GPa)?

a.

149.4 N/mm²

b.

179.24 N/mm²

c.

187.7 N/mm²

d.

156.1 N/mm²

Discuss
Answer: (c).187.7 N/mm²
Q47.
A load of 100N falls through a height of 2cm onto a collar rigidly attached to the lower end of a vertical bar 1.5m long and of 105cm² cross- sectional area. The upper end of the vertical bar is fixed. What is the maximum instantaneous stress induced in the vertical bar if E = 200GPa?

a.

50.87 N/mm²

b.

60.23 N/mm²

c.

45.24 N/mm²

d.

63.14 N/mm²

Discuss
Answer: (b).60.23 N/mm²
Q48.
A weight of 10kN falls by 30mm on a collar rigidly attached to a vertical bar 4m long and 1000mm² in section. What will be the strain (E=210GPa)?

a.

0.00089

b.

0.0005

c.

0.00064

d.

0.00098

Discuss
Answer: (a).0.00089
Q49.
A load of 100N falls through a height of 2cm onto a collar rigidly attached to the lower end of a vertical bar 1.5m long and of 105cm² cross- sectional area. The upper end of the vertical bar is fixed. What is the maximum instantaneous elongation in the vertical bar if E = 200GPa?

a.

0.245mm

b.

0.324mm

c.

0.452mm

d.

0.623mm

Discuss
Answer: (c).0.452mm
Q50.
A load of 100N falls through a height of 2cm onto a collar rigidly attached to the lower end of a vertical bar 1.5m long and of 105cm² cross- sectional area. The upper end of the vertical bar is fixed. What is the strain energy stored in the vertical bar if E = 200GPa?

a.

2.045 N-m

b.

3.14 N-m

c.

9.4 N-mm

d.

2.14 N-m

Discuss
Answer: (a).2.045 N-m
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