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Civil Engineering MCQs with Explanations

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281Civil EngineeringMedium

The ratio of the diameter of reinforcing bars and the slab thickness is________?

A1/4

B1/6

C1/5

D1/8

Correct answer

D. 1/8

Explanation

The correct answer is 1/8.

282Civil EngineeringMedium

The Castigliano’s second theorem can be used to compute deflections________?

Ain statically determinate structures only

Bfor beams and frames only

Cfor any type of structure

Dat the point under the load only

Correct answer

C. for any type of structure

Explanation

The correct answer is for any type of structure.

283Civil EngineeringMedium

On a ladder resting on smooth ground and leaning against vertical wall, the force of friction will be________?

Aupwards at its upper end

Bdownwards at its upper end

Ctowards the wall at its upper end

Daway from the wall at its upper end

Enone of the above

Correct answer

A. upwards at its upper end

Explanation

The correct answer is upwards at its upper end.

284Civil EngineeringMedium

Pick up the correct statement from the following?

AIn alkaline sewage, the pH value is more than 7

BAll the above

CpH value indicates acidity and alkalinity of sewage

DIn acidic sewage, the pH value is less than 7

Correct answer

B. All the above

Explanation

The correct answer is All the above.

285Civil EngineeringMedium

Select the incorrect statement?

Ais limited to a maximum value of 45°

Bincreases as the soil gradation im-proves

Cis rarely more than 30° for fine grained soil

Dincreases as the size of particles increases

Correct answer

A. is limited to a maximum value of 45°

Explanation

The correct answer is is limited to a maximum value of 45°.

286Civil EngineeringMedium

The plinth area of a building not includes________?

AArea of cantilevered porch

BLift and wall including landing

CInternal shaft for sanitary installations up to 2 sq m. in area

DArea of the walls at the floor level

Correct answer

A. Area of cantilevered porch

Explanation

The correct answer is Area of cantilevered porch.

287Civil EngineeringMedium

The type of joint commonly used at the junction of a principal rafter and tie beam in timber trussess is________?

Amitred joint

Bbutt joint

Cmortise and tennon joint

Doblique mortise and tennon joint

Correct answer

D. oblique mortise and tennon joint

Explanation

The correct answer is oblique mortise and tennon joint.

288Civil EngineeringMedium

In a forced vortex motion, the velocity of flow is________?

Ainversely proportional to the square of its radial distance from the axis of rotation

Bdirectly proportional to its radial distance from axis of rotation

Cinversely proportional to its radial distance from the axis of rotation

Ddirectly proportional to the square of its radial distance from the axis of rotation

Correct answer

B. directly proportional to its radial distance from axis of rotation

Explanation

The correct answer is directly proportional to its radial distance from axis of rotation.

289Civil EngineeringMedium

Center of pressure on an inclined plane is________?

Aat metacentre

Babove the centroid

Cbelow the centroid

Dat the centroid

Eat center of pressure

Correct answer

C. below the centroid

Explanation

The correct answer is below the centroid.

290Civil EngineeringMedium

The main function of a fish plate is________?

Ato allow rail to expand and contract freely

Bto join rails with the sleeper

Cto join the two rails together

Dnone of the above

Correct answer

C. to join the two rails together

Explanation

The correct answer is to join the two rails together.

In a forced vortex motion, the velocity of flow is________?

Ainversely proportional to the square of its radial distance from the axis of rotation

Bdirectly proportional to its radial distance from axis of rotation

Cinversely proportional to its radial distance from the axis of rotation

Ddirectly proportional to the square of its radial distance from the axis of rotation

Correct answer

B. directly proportional to its radial distance from axis of rotation

Explanation

The correct answer is directly proportional to its radial distance from axis of rotation.