Civil Engineering - UPSC Civil Service Exam Questions

36. 

Consider the following statements related to Los Angeles Abrasion test on aggregates :
1. It evaluates hardness of source - rock
2. It has a coefficient of variation of about 30 percent
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 A

Explanation:

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37. 

A bar of uniform cross-section of 400 mm2 is loaded as shown in the figure. The stress at section 1-1 is

A. 50 N/mm2
B. 100 N/mm2
C. 25 N/mm2
D. 200 N/mm2

Answer: Option B

Explanation:

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38. 

Due to settlement of support at A of propped cantilever shown in the figure given below, what is the vertical reaction at B ?

A.
B.
C.
D.

Answer: Option B

Explanation:

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39. 

A wooden plank (sp. gr. 0.5) 1 m x 1 m x 0.5 m floats in water with 1.5 kN load on it with 1 m x 1 m surface horizontal. The depth of plank lying below water surface shall be

A. 0.178 m
B. 0.250 m
C. 0.403 m
D. 0.500 m

Answer: Option C

Explanation:

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40. 

A parabolic vertical curve is to be set out connecting two uniform grades of +0.6% and +.0%. The rate of change of grade is to be 0.06% per 30 m. The length of the curve will be

A. 66 2/3 m
B. 133 1/3 m
C. 200 M
D. 266 2/3 m

Answer: Option A

Explanation:

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