Civil Engineering MCQs

Page No. 197

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


aRadius of the shaft


bAngle of twist


cLength of the shaft


dModulus of rigidity


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


bWL3/8EL


cWL3/24EL


dWL3/48EL


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


b511 N mm=


c 611 N mm


d711 N mm


View Answer 611 N mm

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


a2 L


bL


c L/2


dL2


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


bL


cL/2


dL2


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


be²l/3d²


cel²/3d²


de²l²/3d²


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


b2D


cD


dD2


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


b3 /16


c 3 /8


d/16


View Answer 3 /16

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


aStraight line


bParabola


cCircle


dHyperbola


View Answer Straight line

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


a m = 2j – 3


b j = 2m – 3


cm = 3j – 2


dj = 3m – 2


View Answer m = 2j – 3

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