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Civil Engineering MCQs with Explanations

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41Civil EngineeringMedium

The force in AD of the truss shown in given figure, is________?

A0.5t tension

B0.5t compression

C4.0t compression

D3.0t compression

Correct answer

B. 0.5t compression

Explanation

The correct answer is 0.5t compression.

42Civil EngineeringMedium

Which one of the following tunnelling methods is used for laying under ground sewers?

AItalian method

BNeedle beam method

CGerman method

DArmy method

Correct answer

D. Army method

Explanation

The correct answer is Army method.

43Civil EngineeringMedium

In the critical path method of construction planning, Free Float can be________?

A2 and 3 are correct

B1 and 2 are correct

C1 and 4 are correct

Correct answer

A. 2 and 3 are correct

Explanation

The correct answer is 2 and 3 are correct.

44Civil EngineeringMedium

If the modular ratio is, steel ratio is and overall depth of a beam is, the depth of the critical neutral axis of the beam, is________?

A[(m + r)/ m] d

B[(r – m)/m] d

C[m/(m – r)] d

Correct answer

C. [m/(m – r)] d

Explanation

The correct answer is [m/(m – r)] d.

45Civil EngineeringMedium

The amount of residual chlorine left in public water supply for safety against pathogenic bacteria is about________?

A1.0 to 5.0 ppm

B0.05 to 0.5 ppm

C0.01 to 0.05 ppm

D0.5 to 1.0 ppm

Correct answer

B. 0.05 to 0.5 ppm

Explanation

The correct answer is 0.05 to 0.5 ppm.

46Civil EngineeringMedium

If a bent tendon is required to balance a concentrated load W at the centre of the span L, the central dip h must be at least________?

AWL /P

BWL/3P

CWL/2P

DWL/4P

Correct answer

D. WL/4P

Explanation

The correct answer is WL/4P.

47Civil EngineeringMedium

In SI units, the units of force and energy are respectively________?

ADyne and erg

Bkg-wt and joule

CNewton and joule

DNewton and watt

Correct answer

C. Newton and joule

Explanation

The correct answer is Newton and joule.

48Civil EngineeringMedium

The equivalent length of a column of length L, having both the ends hinged, is________?

B2L

CL/2

Correct answer

A. L

Explanation

The correct answer is L.

49Civil EngineeringMedium

A car goes round a curve of radius 100 m at 25 m/sec. The angle to the horizontal at which the road must be banked to prevent sideways friction on the car wheels is tan”1 x, where x is (Assume g = 10 m/sec2)________?

A1/2

B9/5

C5/8

D3/8

Correct answer

C. 5/8

Explanation

The correct answer is 5/8.

50Civil EngineeringMedium

In the mid-section formula________?

AThe mean depth is the average of depths of two consecutive sections

BThe volume of the earth work is calculated by multiplying the mid-section area by the distance between the two original sections

CAll of the above

DThe area of mid-sections is calculated by using mean depth

Correct answer

C. All of the above

Explanation

The correct answer is All of the above.

In the mid-section formula________?

AThe mean depth is the average of depths of two consecutive sections

BThe volume of the earth work is calculated by multiplying the mid-section area by the distance between the two original sections

CAll of the above

DThe area of mid-sections is calculated by using mean depth

Correct answer

C. All of the above

Explanation

The correct answer is All of the above.