MCQs

Civil Engineering MCQs with Explanations

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2041Civil EngineeringMedium

To avoid an interruption in the flow of a syphon, an air vessel is provided________?

Aat the summit

Bat the outlet

Cat the inlet

Dnone of the above

Eay nay point between inlet and outlet

Correct answer

A. at the summit

Explanation

The correct answer is at the summit.

2042Civil EngineeringMedium

Loose jaws of steel trough sleepers are made of________?

Aspring steel

Bmild steel

Ccast steel

Dcast iron

Correct answer

A. spring steel

Explanation

The correct answer is spring steel.

2043Civil EngineeringMedium

Interfering float is the difference between________?

Anone of the above

Bfree float and independent float

Ctotal float and free float

Dtotal float and independent float

Correct answer

C. total float and free float

Explanation

The correct answer is total float and free float.

2044Civil EngineeringMedium

Two circular discs of same weight and thickness are made from metals having different densities. Which disc will have the larger rotational inertia about its central axis?

Anone of the above

Bboth discs will have same rotational inertia

Cdisc with larger density

Ddisc with smaller density

Correct answer

D. disc with smaller density

Explanation

The correct answer is disc with smaller density.

2045Civil EngineeringMedium

Choose the wrong statement?

AFor stability of floating cylinders or spheres, the e.g. of body must lie below the center of buoyancy

BIf e.g. and center of buoyancy coincide, the submerged body must lie at neutral equilibrium for all positions

CAll floating bodies are stable

DThe center of buoyancy is located at the center of gravity of the displaced liquid

EFor stability of a submerged body, the center of gravity of body must lie directly below the center of buoyancy

Correct answer

C. All floating bodies are stable

Explanation

The correct answer is All floating bodies are stable.

2046Civil EngineeringMedium

Corrosion in concrete sewers is caused by________?

Achlorine

Bdissolved oxygen

Cseptic conditions

Dnitrogen

Correct answer

C. septic conditions

Explanation

The correct answer is septic conditions.

2047Civil EngineeringMedium

According to the principle of buoyancy a body totally or partially immersed in a fluid will be lifted up by a force equal to ________?

Aweight of the fluid displaced by the body

Bmore than the weight of the body

Cthe weight of the body

Dweight of body plus the weight of the fluid displaced hy the body

Eless than the weight of the body

Correct answer

A. weight of the fluid displaced by the body

Explanation

The correct answer is weight of the fluid displaced by the body.

2048Civil EngineeringMedium

If H is the height of wall between centers of supports, then the effective height of wall where concrete floors have a bearing on wall irrespective of the direction of span will be________?

A0.85 H

B1.5 H

C1.0 H

D0.75 H

Correct answer

D. 0.75 H

Explanation

The correct answer is 0.75 H.

2049Civil EngineeringMedium

Based on punching shear consideration, the overall depth of a combined footing under a column A, is________?

A(Perimeter of column A × Safe punching stress)/(Load on column A + Upward pressure × Area of the column)

BNone of these

C(Area of the column A × Safe punching stress)/Load on column A

Correct answer

A. (Perimeter of column A × Safe punching stress)/(Load on column A + Upward pressure × Area of the column)

Explanation

The correct answer is (Perimeter of column A × Safe punching stress)/(Load on column A + Upward pressure × Area of the column).

2050Civil EngineeringMedium

The height of the sink of wash basin above floor level is kept________?

A60 cm

B75 cm to 80 cm

C80 cm

D70 cm

Correct answer

B. 75 cm to 80 cm

Explanation

The correct answer is 75 cm to 80 cm.

Choose the wrong statement?

AFor stability of floating cylinders or spheres, the e.g. of body must lie below the center of buoyancy

BIf e.g. and center of buoyancy coincide, the submerged body must lie at neutral equilibrium for all positions

CAll floating bodies are stable

DThe center of buoyancy is located at the center of gravity of the displaced liquid

EFor stability of a submerged body, the center of gravity of body must lie directly below the center of buoyancy

Correct answer

C. All floating bodies are stable

Explanation

The correct answer is All floating bodies are stable.

According to the principle of buoyancy a body totally or partially immersed in a fluid will be lifted up by a force equal to ________?

Aweight of the fluid displaced by the body

Bmore than the weight of the body

Cthe weight of the body

Dweight of body plus the weight of the fluid displaced hy the body

Eless than the weight of the body

Correct answer

A. weight of the fluid displaced by the body

Explanation

The correct answer is weight of the fluid displaced by the body.

Based on punching shear consideration, the overall depth of a combined footing under a column A, is________?

A(Perimeter of column A × Safe punching stress)/(Load on column A + Upward pressure × Area of the column)

BNone of these

C(Area of the column A × Safe punching stress)/Load on column A

Correct answer

A. (Perimeter of column A × Safe punching stress)/(Load on column A + Upward pressure × Area of the column)

Explanation

The correct answer is (Perimeter of column A × Safe punching stress)/(Load on column A + Upward pressure × Area of the column).