Civil Engineering - UPSC Civil Service Exam Questions

26. 

Which one of the following is employed to determine strength of hardened existing concrete structure ?

A. Bullet test
B. Kelly ball test
C. Rebound hammer test
D. Cone penetrometer

Answer: Option C

Explanation:

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27. 

Which one of following statements associated with groynes :
1. Hydraulic behaviour of a system of groynes is influenced by the characteristics of particles that constitute the littoral drift.
2. Groyne is constructed approximately parallel to shore.
Which of the statements given above is/are correct ?

A. 1 only
B. 2 only
C. Both 1 and 2
D. Neither 1 nor 2

Answer: Option C

Explanation:

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28. 

Reinforced concrete door and window frames can be compacted using :
1. needle vibrator
2. plate vibrator
3. form vibrator
4. tapping
The correct sequence of these equipment in order of preference (from the best to the worst) is

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

Answer: Option D

Explanation:

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29. 

If the Froude number of flow in an open channel is more than 1.0 then the flow is said to be

A. critical
B. shooting
C. streaming
D. transitional

Answer: Option B

Explanation:

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30. 

Due to some point load anywhere on a fixed beam, the maximum free bending moment is M. The sum of fixed end moment is

A. M
B. 1.5M
C. 2.0M
D. 3.0M

Answer: Option A

Explanation:

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