Civil Engineering - UPSC Civil Service Exam Questions

36. 

For a simple circular curve which one of the following gives the correct relation between the radius R and degree of curve D, for 20 m arc length ?

A.
B.
C.
D.

Answer: Option C

Explanation:

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37. 

A car negotiates a curve on a slippery road at a constant speed of 10 m/s. If the coefficient of friction is 0.5, what is the minimum radius of the arc in which the car can turn ?

A. 20 m
B. 10 m
C. 5 m
D. 4 m

Answer: Option A

Explanation:

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38. 

Grid lines on a mapsheet can be plotted mechanically by means of a

A. rotometer
B. pantograph
C. coordinatograph
D. stereometer

Answer: Option C

Explanation:

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39. 

A municipal sewage has BOD5 of 200 mg/l. It is proposed to treat it and dispose off into a marine environment. For what minimum efficiency should the sewage treatment plant be designed ?

A. 85%
B. 60%
C. 50%
D. 33.67%

Answer: Option A

Explanation:

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40. 

As the state of strain of an element of dense sand changes from plain strain to trivial condition, the effective angle of internal friction :

A. increases
B. decreases
C. remains constant
D. first increases and then remains constant

Answer: Option B

Explanation:

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