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Strength of Materials MCQ Question with Answer

Strength of Materials MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding.

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Question No : 57
The stress induced in a body due to suddenly applied load compared to when it is applied gradually is

Same
Half
Two times
Four times
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Question No : 58
For which material the Poisson's ratio is more than unity

Steel
Copper
Aluminium
None of the above
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Question No : 59
For a beam, as shown in the below figure, the deflection at C is (where E = Young's modulus for the beam material, and I = Moment of inertia of the beam section.

Wl3/48 EI
Wa²b²/3EIl
[Wa/(a√3) x EIl] x (l² - a²)3/2
5Wl3/384 EI
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Question No : 60
If the radius of wire stretched by a load is doubled, then its Youngs modulus will be

Doubled
Halved
Becomes four times
None of the above
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Question No : 61
A riveted joint in which every rivet of a row is opposite to other rivet of the outer row, is known as

Chain riveted joint
Diamond riveted joint
Crisscross riveted joint
Zigzag riveted joint
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Question No : 62
The neutral axis of a transverse section of a beam passes through the centre of gravity of the section and is

In the vertical plane
In the horizontal plane
In the same plane in which the beam bends
At right angle to the plane in which the beam bends
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Question No : 63
During a tensile test on a specimen of 1 cm cross-section, maximum load observed was 8 tonnes and area of cross-section at neck was 0.5 cm². Ultimate tensile strength of specimen is

4 tonnes/ cm²
8 tonnes/ cm²
16 tonnes/ cm²
22 tonnes/ cm²
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