Civil Engineering - UPSC Civil Service Exam Questions

1. 

If an element is subjected to pure shearing stress τxy then the maximum principal stress is equal to

A. xy
B. τxy/2
C. τxy
D. 1 - (τxy)2

Answer: Option C

Explanation:

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2. 

The wall friction of the retaining wall:

A. decreases active earth pressure but increases passive earth pressure
B. decreases passive earth pressure but increases active earth pressure
C. decreases both active and passive earth pressures
D. increases both active and passive earth pressures

Answer: Option A

Explanation:

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3. 

Consider the following statements :
The salient features of a bar chart over network are that :
1. It is simple to draw and easy to understand.
2. It is unable to depict interdependence of activities.
3. It clearly distinguishes between critical and non-critical activities.
4. It is not possible to crash activities to get optimum and minimum duration of the project.
Which of the following statements given above are correct ?

A. 1, 2, 3 and 4
B. 2 and 3
C. 1, 2 and 4
D. 1, 3 and 4

Answer: Option C

Explanation:

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4. 

Which one of the following is the best method for locating sounding to estimate the dredged material from the harbours ?

A. Two angles from shore
B. Two angles from boat
C. One angle from shore and other from the boat
D. Fixed intersecting ranges

Answer: Option C

Explanation:

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5. 

An open channel carrying super critical flow is provided with a smooth expansion along the direction of flow. When no other considerations interfere, then the water surface.

A. before transition will rise
B. after transition will rise
C. before transition will drop
D. after transition will drop

Answer: Option B

Explanation:

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