Stresses in Members MCQs

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

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Stresses in Members MCQs | Page 5 of 10

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Q41.
Consider two bars A and B of same material tightly secured between two unyielding walls. Coefficient of thermal expansion of bar A is more than that of B. What are the stresses induced on increasing the temperature?

a.

Tension in both the materials

b.

Tension in material A and compression in material B

c.

Compression in material A and tension in material B

d.

Compression in both the materials

Discuss
Answer: (d).Compression in both the materials
Q42.
What will be the unit of compressive stress?

a.

N

b.

N/mm

c.

N/mm²

d.

Nmm

Discuss
Answer: (c).N/mm²
Q43.
A cast iron T section beam is subjected to pure bending. For maximum compressive stress to be 3 times the maximum tensile stress, centre of gravity of the section from flange side is ____________

a.

h/2

b.

H/3

c.

H/4

d.

2/3h

Discuss
Answer: (c).H/4
Q44.
A solid circular shaft of diameter d is subjected to a torque T. the maximum normal stress induced in the shaft is ____________

a.

Zero

b.

16T/πd³

c.

32T/πd³

d.

None of the mentioned

Discuss
Answer: (b).16T/πd³
Q45.
When a rectangular beam is loaded transversely, the maximum compressive stress develops on ____________

a.

Bottom fibre

b.

Top fibre

c.

Neutral axis

d.

Every cross-section

Discuss
Answer: (b).Top fibre
Q46.
An axial residual compressive stress due to a manufacturing process is present on the outer surface of a rotating shaft subjected to bending. Under a given bending load, the fatigue of the shaft in the presence of the residual compressive stress is ____________

a.

Decreased

b.

Increases or decreased, depending on the external bending load

c.

Neither decreased nor increased

d.

Increases

Discuss
Answer: (d).Increases
Q47.
A steel bar of 40mm x 40mm square cross-section is subjected to an axial compressive load of 200kN. If the length of the bar is 2m and E=200GPa, the elongation of the bar well be ____________

a.

1.25mm

b.

2.70mm

c.

4.05mm

d.

5.40mm

Discuss
Answer: (a).1.25mm
Q48.
The length, Young’s modulus and coefficient of thermal expansion of bar P are twice that of bar Q. what will be the ration of stress developed in bar P to that in bar Q if the temperature of both bars is increased by the same amount?

a.

2

b.

8

c.

4

d.

16

Discuss
Answer: (c).4
Q49.
A steel bar 600mm long and having 30mm diameter, is turned down to 25mm diameter for one fourth of its length. It is heated at 30 C above room temperature, clamped at both ends and then allowed to cool to room temperature. If the distance between the clamps is unchanged, the maximum stress in the bar ( α = 12.5 x 10⁻⁶ per C and E = 200 GN/m²) is

a.

25 MN/m²

b.

40 MN/m²

c.

50 MN/m²

d.

75 MN/m²

Discuss
Answer: (d).75 MN/m²
Q50.
A cube having each side of length p, is constrained in all directions and is heated unigormly so that the temperature is raised to T.C. What will be the stress developed in the cube?

a.

δET / γ

b.

δTE / (1 – 2γ)

c.

δTE / 2 γ

d.

δTE / (1 + 2γ)

Discuss
Answer: (b).δTE / (1 – 2γ)
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