Civil Engineering - UPSC Civil Service Exam Questions

41. 

What type of vibrator is used for concreting thin section as well as heavily reinforced section?

A. Vibrating needle
B. Internal vibrator
C. Surface vibrator
D. Form vibrator

Answer: Option D

Explanation:

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42. 

The difference between the sum of the angles of a plane triangle and the sum of the angles of a spherical triangle is one second when the triangle on the earth surface has an area of about

A. 105 sq.km.
B. 135 sq.km.
C. 159 sq.km.
D. 195 sq.km.

Answer: Option D

Explanation:

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43. 

Consider the following statements :
1. The standard penetration test is a reliable method for measuring the relative density of granular soils.
2. For a sand having the same relative density, N-values remain the same at all depths.
3. For a sand having the same relative density, N-values are different at different depths.
Which of the statements given above is/are correct ?

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

Answer: Option D

Explanation:

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44. 

In a plane table survey, the plane table station position was to be fixed with respect to three reference points. It was found that one of the reference points was not visible due to some obstruction. It was, therefore decided to make use of the other two points only. Which one of the following statements is true regarding the determination of station position ?

A. The work can be done faster.
B. Two settings of the plane table will be needed but the work will be accurate.
C. Only one setting of the table is needed, however the work will be less accurate.
D. The work will be less accurate and time consuming.

Answer: Option B

Explanation:

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45. 

Putty is made up of

A. white lead and turpentine
B. powdered chalk and raw linseed oil
C. red lead and linseed oil
D. zinc oxide and boiled linseed oil

Answer: Option B

Explanation:

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