Strength of Materials MCQ | Civil Engineering MCQ

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Strength of Materials MCQ

Civil engineering MCQ and strength of materials MCQ for competitive exam

A member with a cross-section of A and length L is subjected to a force of P. If Young’s Modulus is E, then the linear strain will be

[A] PL/AE
[B] PA/LE
[C] P/AE
[D] PE/AL

ANSWER= [C] P/AE

Deflection of a

[A] Cantilever beam, carrying a uniformly distributed load over span is WL³/8EI
[B] Simply supported beam carrying a concentrated load W at mid-span is WL³/48EI
[C] Cantilever beam carrying a concentrated load W at its free end is WL³/3EI
[D] All the above

ANSWER = [D] All the above

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calcite is a significant constituent of sedimentary rock.

If a rectangular beam measuring 10 × 18 × 400 cm carries a uniformly distributed load such that the bending stress developed is 100 kg/cm². The intensity of the load per meter length, is

[A] 270 kg
[B] 260 kg
[C] 240 kg
[D] 250 kg

ANSWER = [D] 250 kg

If the Poisson’s ratio of a material is 0.25, the ratio of Modulus of Rigidity to Young’s Modulus will be

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[A] 2
[B] 0.4
[C] 2.5
[D] 4

ANSWER = [B] 0.4

Sandy porous media has a high specific yield

Bulk Modulus (K), Young’s Modulus (E) and Poisson’s Ratio (m) are related by

[A] K = E/3(1 – 2/m)
[B] E = K/3(1 + 2/m)
[C] E = 2K(1 + 1/m)
[D] E = 3K(1 – 2m)

ANSWER= [D] E = 3K(1 – 2m)

On a ladder resting on smooth ground and leaning against a vertical wall, the force of friction will be

[A] Away from the wall at its upper end
[B] Upwards at its upper end
[C] Towards the wall at its upper end
[D] Downwards at its upper end

ANSWER= [B] Upwards at its upper end

A plate 100 mm wide, 10 mm thick is having a hole of diameter of 10 mm symmetrical about the axis of the plate. The plate is subjected to a force of 9 kN. The maximum stress on a section passing through center of the hole will be

[A] 10 N/mm²
[B] > 10 N/mm²
[C] < 9 N/mm²
[D] 9 N/mm²

ANSWER = [B] > 10 N/mm²

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An isotropic material is the one which

[A] has same structure at all the point
[B] has Young’s modulus equal to the modulus of rigidity
[C] has the elastic constants, identical in all the direction
[D] obeys Hooke’s law up to failure

ANSWER= [C] has the elastic constants, identical in all the direction

From a circular plate of diameter 6 cm is cut out a circle whose diameter is a radius of the plate. Find the e.g. of the remainder from the center of circular plate

[A] 2.5 cm
[B] 0.5 cm
[C] 1.0 cm
[D] 1.5 cm

ANSWER= [B] 0.5 cm

The canal falls are needed in the canal network for Designed slope is smaller than available ground slope

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