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Civil Engineering MCQs with Explanations

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171Civil EngineeringMedium

According to ISI recommendations, the maximum depth of stress block for balanced section of a beam of effective depth d is________?

A0.55 d

B0.43 d

C0.68 d

D0.85 d

Correct answer

B. 0.43 d

Explanation

The correct answer is 0.43 d.

172Civil EngineeringMedium

Which of the following is a flexible outlet?

Anone of the above

BGibb’s outlet

Csubmerged pipe outlet

DKennedy’s gauge outlet

Correct answer

D. Kennedy’s gauge outlet

Explanation

The correct answer is Kennedy’s gauge outlet.

173Civil EngineeringMedium

Pick up the correct statement from the following?

AThe splitting of colours of white light by passing through a prism is caused due to dispersion

BThe variation of the refractive index with wave length, is called dispersion,

CThe refractive index of a medium varies according to the wavelength of the radiation,

DAll of these

Correct answer

D. All of these

Explanation

The correct answer is All of these.

174Civil EngineeringMedium

The design yield stress of steel according to IS: 456-1978 is________?

A0.57 fy

B0.67 fy

C0.87 fy

D0.37 fy

Correct answer

C. 0.87 fy

Explanation

The correct answer is 0.87 fy.

175Civil EngineeringMedium

Crushing strength of a first class brick should not be less than________?

A7.0 N/mm2

B3.5 N/mm2

C14.0 N/mm2

D10.5 N/mm2

Correct answer

D. 10.5 N/mm2

Explanation

The correct answer is 10.5 N/mm2.

176Civil EngineeringMedium

d constant, the width of a cantilever of length l of uniform strength loaded with Keeping the depth a uniformly distributed load w varies from zero at the free end and________?

A(3w/ × l2 at the fixed end

B(5w/ × l2 at the fixed end

C(2w/ × l2 at the fixed end

Correct answer

A. (3w/ × l2 at the fixed end

Explanation

The correct answer is (3w/ × l2 at the fixed end.

177Civil EngineeringMedium

Percentage of bacterial load that can be removed from water by the process of plain sedimentation is about________?

A50

B75

C100

D10 to 25

Correct answer

B. 75

Explanation

The correct answer is 75.

178Civil EngineeringMedium

During chaining along a straight line, the. leader of the party has 4 arrows in his hand while the follower has 6. Distance of the follower from the starting point is________?

A120 m

B6 chains

C4 chains

D180m

Correct answer

B. 6 chains

Explanation

The correct answer is 6 chains.

179Civil EngineeringMedium

A model of a reservior is drained in 4 mts by opening the sluice gate. The model scale is 1: 225. How long should it take to empty the prototype?

A4 minutes

B4 x V225 minutes

C4 x (225)3/2 minutes

D900 minutes

E4 (225)1/3 minutes

Correct answer

B. 4 x V225 minutes

Explanation

The correct answer is 4 x V225 minutes.

180Civil EngineeringMedium

The normal stress in a fluid will be constant in all directions at a point only if________?

Ait is at rest.

Bit is frictionless

Cit has uniform viscosity

Dit is incompressible

Eit has zero viscosity

Correct answer

A. it is at rest.

Explanation

The correct answer is it is at rest..

Pick up the correct statement from the following?

AThe splitting of colours of white light by passing through a prism is caused due to dispersion

BThe variation of the refractive index with wave length, is called dispersion,

CThe refractive index of a medium varies according to the wavelength of the radiation,

DAll of these

Correct answer

D. All of these

Explanation

The correct answer is All of these.