Civil Engineering - UPSC Civil Service Exam Questions

41. 

On which one of the following factors, does strength of concrete depend primarily ?

A. Quality of coarse aggregate
B. Quality of fine aggregate
C. Fineness of cement
D. Water-cement ratio

Answer: Option D

Explanation:

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42. 

When a load crosses a through type Pratt truss in the direction left to right, the nature of force in any diagonal member in the left half of the span would :

A. change from compression to tension
B. change from tension to compression
C. always be compression
D. always be tension

Answer: Option A

Explanation:

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43. 

The double-line field book is most commonly used for recording

A. precise work
B. ordinary chain survey work
C. large-scale plotting work
D. small-scale plotting work

Answer: Option B

Explanation:

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44. 

The wood preservative "Creosote" is derived from

A. wood or coal
B. acidic cupric chromate
C. chromated zinc chloride
D. pentachlorophenol

Answer: Option A

Explanation:

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45. 

To determine the length of a bridge proposed to be built across a wide river, the surveying method of choice would be

A. tacheometry
B. chain surveying
C. hydrographic surveying
D. triangulation

Answer: Option D

Explanation:

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