Civil Engineering MCQs

Page No. 197

In a shaft, the shear stress is not directly proportional to_________________?


aRadius of the shaft

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bAngle of twist

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cLength of the shaft

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dModulus of rigidity

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View Answer Length of the shaft

The maximum deflection of a simply supported beam of span L, carrying an isolated load at the centre of the span; flexural rigidity being EI, is______________?


aWL3/3EL

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bWL3/8EL

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cWL3/24EL

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dWL3/48EL

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View Answer WL3/48EL

A steel bar 20 mm in diameter simply-supported at its ends over a total span of 40 cm carries a load at its centre. If the maximum stress induced in the bar is limited to N/mm2, the bending strain energy stored in the bar, is___________________?


a411 N mm

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b511 N mm=

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c 611 N mm

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d711 N mm

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View Answer 611 N mm

The equivalent length is of a column of length having both the ends fixed, is_________________?


a2 L

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bL

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c L/2

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dL2

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View Answer . L/2

The equivalent length of a column of length L having one end fixed and the other end free, is______________?


a 2L

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bL

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cL/2

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dL2

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View Answer 2L

a uniform circular bar of diameter d and length , which extends by an The deflection of amount under a tensile pull , when it carries the same load at its mid-span, is___________________?


ael/2d

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be²l/3d²

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cel²/3d²

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de²l²/3d²

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View Answer el²/3d²

The radius of gyration of a rectangular section (depth D, width B) from a centroidal axis parallel to the width is__________________?


aD/2

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b2D

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cD

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dD2

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View Answer D

section modulus of a square section of side B and that of a circular section of The ratio of the diameter D, is___________________?


a 2 /15

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b3 /16

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c 3 /8

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d/16

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View Answer 3 /16

The locus of reaction of a two hinged semi-circular arch, is_________________?


aStraight line

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bParabola

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cCircle

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dHyperbola

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View Answer Straight line

A truss containing j joints and m members, will be a simple truss if_________________?


a m = 2j – 3

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b j = 2m – 3

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cm = 3j – 2

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dj = 3m – 2

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View Answer m = 2j – 3

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