Civil Engineering MCQs

Page No. 194

If a solid shaft (diameter 20 cm, length 400 cm, N = 0.8 × 105 N/mm2) when subjected to a twisting moment, produces maximum shear stress of 50 N/mm 2, the angle of twist in radians, is_________________?


a 0.001


b0.002


c0.0025


d0.003


View Answer 0.0025

A simply supported beam which carries a uniformly distributed load has two equal overhangs. To have maximum B.M. produced in the beam least possible, the ratio of the length of the overhang to the total length of the beam, is_________________?


a0.207


b0.307


c 0.407


d0.508


View Answer 0.207

To determine the force in BD of the truss shown in the given figure a section is passed through BD, CD and CE, and the moments are taken about________________?


aA joint


bB joint


c C joint


dD joint


View Answer C joint

A short column (30 cm × 20 cm) carries a load P 1 at 4 cm on one side and another load P2at 8 cm on the other side along a principal section parallel to longer dimension. If the extreme intensity on either side is same, the ratio of P1 to P2 will be_________________?


a2/3


b3/2


c8/5


d 5/8


View Answer 8/5

For beams breadth is constant__________________?


aDepth d M


bDepth d 3


cDepth d


dDepth d 1/M


View Answer Depth d 3

For calculating the permissible stress 0 y /[(1 + a(l/r)²] is the empirical formula, known as__________________?


aStraight line formula


bParabolic formula


cPerry’s formula


dRankine’s formula


View Answer Rankine’s formula

The maximum B.M. due to an isolated load in a three hinged parabolic arch, (span l and rise h) having one of its hinges at the crown, occurs on either side of the crown at a distance_______________?


a l/4


bh/4


c l


d l4


View Answer l

The force in AC of the truss shown in the given figure, is_________________?


a 5t tension


b 4t tension


c 4t compression


d 5t compression


View Answer 4t tension

The maximum bending moment for a simply supported beam with a uniformly distributed load w/unit length, is_________________?


a WI/2


bWI²/4


cWI²/8


dWI²/12


View Answer WI²/8

At any point of a beam, the section modulus may be obtained by dividing the moment of inertia of the section by_________________?


a Depth of the section


bDepth of the neutral axis


cMaximum tensile stress at the section


dMaximum compressive stress at the section



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