# Civil Engineering - UPSC Civil Service Exam Questions

21.

Consider the following factors pertaining to flow through soil:
2. Grain size
3. Void ratio
4. Cross-sectional area of the sample.
Of these, the factors affecting permeability include

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

Explanation:

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22.

In drawing AOA networks and making time computations, the following processes are involved :
1. Activity listing
2. Work breakdown structure
3. Activity time allotment
4. Consideration of available resources for each activity
5. Activity dependencies
6. Float computations
7. Backward path computation
8. Project duration
9. Forward path computation
What is the correct sequence of the processes given above ?

 A. 1, 2, 4, 3, 9, 7, 5, 6, 8 B. 2, 1, 4, 3, 5, 9, 8, 7, 6 C. 4, 1, 3, 2, 9, 5, 7, 8, 6 D. Any sequence can be followed but 6 and 7 will be the last two ones

Explanation:

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23.

Timber can be made more fire resistant by

 A. dipping and steeping process B. hot and cold open tank treatment C. charring D. Sir Abel's process

Explanation:

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24.

Which one of the following is correct in respect of the influence line for the bending moment at one-fourths of the span from left support of a prismatic beam simply supported at ends ?

 A. It is composed of straight lines only B. It is composed of curved lines only C. It is composed of straight and curved line D. It is parabolic

Explanation:

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25.

Consider the following statements :
In a uni-dimensional stress system, the principal plane is defined as one on which the
1. shear stress is zero.
2. normal stress is zero.
3. shear stress is maximum.
4. normal stress is maximum.
Of these statements :

 A. 1 and 2 are correct B. 2 and 3 are correct C. 1 and 4 are correct D. 3 and 4 are correct