Civil Engineering - UPSC Civil Service Exam Questions

41. 

Creep of a material is a property indicated by

A. a time-dependent strain of the material
B. elongation of the material due to changes in the material properties
C. shortening caused by shrinkage of the member
D. the decrease in the volume of the material affected by the weather conditions

Answer: Option A

Explanation:

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42. 

The most accurate measurement of the lengths of long survey lines is made by using ?

A. steel band
B. invar tape
C. electronic distance measuring equipment
D. autoreduction tachometer

Answer: Option C

Explanation:

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43. 

A saturated clay layer with single drainage face takes 4 years to attain 50% degree of consolidation. If the clay layer had double drainage, then the time required to attain 50% degree of consolidation is

A. 8 years
B. 4 years
C. 2 years
D. 1 year

Answer: Option D

Explanation:

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44. 

Consider the following statements :
Among the more common varieties of timber, namely, sal, mango and deodar,
1. sal is the strongest.
2. mango is the least durable.
3. deodar is the lightest.
Of these statements :

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

Answer: Option A

Explanation:

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45. 

Which one of the following tools is required to bend the rails for track maintenance ?

A. Rail tong
B. Jim crow
C. Crowbar
D. Wire claw

Answer: Option B

Explanation:

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