Strength of Materials MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Strength of Materials, a fundamental topic in the field of Mechanical Engineering. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Strength of Materials 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 Strength of Materials mcq questions that explore various aspects of Strength of Materials problems. Each MCQ is crafted to challenge your understanding of Strength of Materials principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Mechanical Engineering tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Strength of Materials MCQs are your pathway to success in mastering this essential Mechanical Engineering topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Strength of Materials. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

So, are you ready to put your Strength of Materials knowledge to the test? Let's get started with our carefully curated MCQs!

Strength of Materials MCQs | Page 39 of 44

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Q381.
When a load on the free end of a cantilever beam is increased, failure will occur

a.

at the free end

b.

at the fixed end

c.

in the middle of the beam

d.

at a distance 2l/3 from free end

Discuss
Answer: (b).at the fixed end
Q382.
The length of a conical bar is l, diameter of base is d and weight per unit volume is w. It is fixed at its upper end and hanging freely. The elongation of the bar under the action of its own weight will be

a.

wl²/2E

b.

wl²/4E

c.

wl²/6E

d.

wl²/8E

Discuss
Answer: (c).wl²/6E
Q383.
A pressure vessel is said to be a thin shell when the ratio of wall thickness of the vessel to its diameter is __________ 1/10.

a.

equal to

b.

less than

c.

greater than

d.

None of these

Discuss
Answer: (b).less than
Q384.
According to Euler's column theory, the crippling load of a column is given by p = ฯ€2 EI/Cl2. In the Euler's formula, the value of C for a column with one end fixed and the other end hinged, is 1/2.

a.

True

b.

False

c.

Can't say

d.

None of these

Discuss
Answer: (a).True
Q385.
A tensile test is performed on a mild steel round bar. Its diameter after fracture will

a.

remain same

b.

increase

c.

decrease

d.

depend upon rate of loading

Discuss
Answer: (c).decrease
Q386.
Two closely coiled helical springs 'A' and 'B' are equal in all respects but the diameter of wire of spring 'A' is double that of spring 'B' The stiffness of spring 'B' will be __________ that of spring 'A'

a.

one-sixteenth

b.

one-eighth

c.

one-fourth

d.

one-half

Discuss
Answer: (a).one-sixteenth
Q387.
When a closely-coiled helical spring of mean diameter (D) is subjected to an axial load (W), the stiffness of the spring is given by

a.

Cdโด/D³n

b.

Cdโด/2D³n

c.

Cdโด/4D³n

d.

Cdโด/8D³n

Discuss
Answer: (d).Cdโด/8D³n
Q388.
A leaf spring is supported at the

a.

ends and loaded at the centre

b.

centre and loaded at the ends

c.

ends and loaded anywhere

d.

centre and loaded anywhere

Discuss
Answer: (b).centre and loaded at the ends
Q389.
In leaf springs, the maximum bending stress developed in the plates is (where W = Load acting on the spring, l = Span of the spring, n = Number of plates, b = Width of plates, and t = Thickness of plates)

a.

Wl/nbt²

b.

3Wl/2nbt²

c.

2Wl/nbt²

d.

3Wl/nbt²

Discuss
Answer: (b).3Wl/2nbt²
Q390.
The unit of stress in S.I. units is

a.

N/mm²

b.

kN/mm²

c.

N/m²

d.

any one of these

Discuss
Answer: (d).any one of these
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