Civil Engineering - UPSC Civil Service Exam Questions

1. 

Water is to be pumped at the rate of 0.025 m3/s from a 4 m deep ground level tank to an overhead tank. The difference in levels of the full tank levels of these tanks is 16 m. What is the approximate power required for operating a 65% efficient centrifugal pump ?

A. 7.5 kW
B. 6.0 kW
C. 3.9 kW
D. 3.2 kW

Answer: Option C

Explanation:

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2. 

If in a concrete mix the fineness modulus of coarse aggregate is 7.6, the fineness modulus of fine aggregate is 2.8 and the economical value of the fineness modulus of combined aggregate is 6.4, then the proportion of fine aggregate is

A. 25%
B. %
C. 50%
D. %

Answer: Option B

Explanation:

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3. 

A rectangular footing 1 m x 2 m is placed at a depth of 2 m in a saturated clay having an unconfined compressive strength of 100 kN/m2. According to Skempton, the net ultimate bearing capacity is

A. 420 kN/m2
B. 412.5 kN/m2
C. 385 kN/m2
D. 350 kN/m2

Answer: Option C

Explanation:

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4. 

A floating body is in stable equilibrium

A. when its metacentric height is zero
B. when the centre of gravity of the body is below the centre of buoyancy
C. when its metacentre is above the centre of gravity of body
D. in none of the above situations

Answer: Option C

Explanation:

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5. 

For three-dimensional movement of a weight, which one of the following is most suitable ?

A. Chain hoist
B. Winch
C. Crane
D. Jack

Answer: Option C

Explanation:

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