Civil Engineering MCQs

Page No. 84

The allowable shear stress in the web of mild steel beams decreases with__________________?


adecrease in h/t ratio

✖


bincrease in h/t ratio

✓


cdecrease in thickness

✖


d increase in height

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View Answer increase in h/t ratio

Hudson’s formula gives the dead weight of a truss bridge as a function of_________________?


abottom chord area

✓


btop chord area

✖


ceffective span of bridge

✖


dheaviest axle load of engine

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View Answer bottom chord area

A steel beam supporting loads from the floor slab as well as from wall is termed as________________?


astringer beam

✖


b lintel beam

✖


cspandrel beam

✓


dheader beam

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View Answer spandrel beam

For a compression member with double angle section, which of the following section will give larger value of minimum radius of gyration?


aequal angles back to back

✖


bunqual legged angles with long legs back to back

✓


cunequal legged angles with short legs back to back

✖


dboth (B) or (C)

✖



The moment of inertia of the pair of vertical stiffeners about the center line of the web should not be less than__________________?


a1.5dV/C

✖


b1.5d¥/C

✖


c1.5d¥/C2

✓


d1.5dY/C3

✖


View Answer 1.5d¥/C2

In case of plastic design, the calculated maximum shear capacity of a beam as per IS:800 shall be________________?


a0.55 Awfy

✓


b0.65 Awfy

✖


c0.75 Awfy

✖


d0.85 Awfy

✖


View Answer 0.55 Awfy

As per IS:800, in the plastic design, which of the following pairs are correctly matched? Working Loads Load factor________________?


aDead load 1.7

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bDead Load + imposed load 1.7

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cDead load + load due to wind or 1.3 seismic forces

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d(A) and (B) are correct

✓



Which of the following conditions is to be satisfied both in elastic and plastic analysis ?


aequilibrium condition

✓


b yield condition

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cplastic moment condition

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dmechanism condition

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View Answer equilibrium condition

The ratio of plastic section modulus to elastic section modulus__________________?


ais equal to 1

✖


bis always less than 1

✖


cis always greater than 1

✓


d can be less than 1

✖



The mechanism method of plastic analysis satisfies___________________?


aequilibrium and mechanism conditions

✓


bequilibrium and plastic moment conditions

✖


cmechanism and plastic moment conditions

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dequilibrium condition only

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