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Civil Engineering MCQs with Explanations

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401Civil EngineeringMedium

The maximum number of steps in a flight should generally be restricted to________?

Ano limit

B12

C10

D15

Correct answer

B. 12

Explanation

The correct answer is 12.

402Civil EngineeringMedium

A retaining wall 6m high supports a backfill with a surcharge angle of 10°. The back of the wall is inclined to the vertical at a positive batter angle of 5°. If the angle of wall friction is 7°, then the resultant active earth pressure will act at a distance of 2 m above the base and inclined to the horizontal at an angle of________?

A12°

B17°

C7°

D10°

Correct answer

A. 12°

Explanation

The correct answer is 12°.

403Civil EngineeringMedium

Which of the following statements is incorrect?

AMinimum cross sectional area of longitudinal reinforcement in a column is 0.8%

BReinforcing bars in a column should not be less than 12 mm in diameter

CSpacing of longitudinal bars measured along the periphery of column should not exceed 300 mm

DThe number of longitudinal bars provided in a circular column should not be less than four

Correct answer

D. The number of longitudinal bars provided in a circular column should not be less than four

Explanation

The correct answer is The number of longitudinal bars provided in a circular column should not be less than four.

404Civil EngineeringMedium

If the horizontal cross-sectional area of a wall is 1200 cm2, then the basic stress shall be multiplied by a reduction factor equal to________?

A0.85

B0.95

C0.75

D0 6

Correct answer

A. 0.85

Explanation

The correct answer is 0.85.

405Civil EngineeringMedium

For large sewers, maximum distance between manholes may be________?

A300 m

B100 m

C50 m

D200 m

Correct answer

A. 300 m

Explanation

The correct answer is 300 m.

406Civil EngineeringMedium

Reynolds number is significant in________?

Anone of the above

Bsupersonics, as with projectile and jet propulsion

Cfull immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc

Dall of the above

Esimultaneous motion through two fluids where there is a surface of dis-continuity, gravity forces, and wave making effect, as with ship’s hulls

Correct answer

C. full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc

Explanation

The correct answer is full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc.

407Civil EngineeringMedium

A negative declination shows that the magnetic meridian is to the________?

Awestern side of the true meridian

Bnone of the above

Ceastern side of the true meridian

Dsouthern side of the true meridian

Correct answer

A. western side of the true meridian

Explanation

The correct answer is western side of the true meridian.

408Civil EngineeringMedium

A raft foundation is provided if its area exceeds the plan area of the building by________?

A20 %

B40 %

C10 %

D50 %

Correct answer

D. 50 %

Explanation

The correct answer is 50 %.

409Civil EngineeringMedium

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

AL/2

B2 L

Correct answer

A. L/2

Explanation

The correct answer is L/2.

410Civil EngineeringMedium

The percentage compensation in gradient for ruling gradient of 4% and horizontal curve of radius 760 m is________?

A1 %

B10%

Cno compensation

D0.1 %

Correct answer

C. no compensation

Explanation

The correct answer is no compensation.

Which of the following statements is incorrect?

AMinimum cross sectional area of longitudinal reinforcement in a column is 0.8%

BReinforcing bars in a column should not be less than 12 mm in diameter

CSpacing of longitudinal bars measured along the periphery of column should not exceed 300 mm

DThe number of longitudinal bars provided in a circular column should not be less than four

Correct answer

D. The number of longitudinal bars provided in a circular column should not be less than four

Explanation

The correct answer is The number of longitudinal bars provided in a circular column should not be less than four.

Reynolds number is significant in________?

Anone of the above

Bsupersonics, as with projectile and jet propulsion

Cfull immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc

Dall of the above

Esimultaneous motion through two fluids where there is a surface of dis-continuity, gravity forces, and wave making effect, as with ship’s hulls

Correct answer

C. full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc

Explanation

The correct answer is full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc.