Civil Engineering - UPSC Civil Service Exam Questions

36. 

The rectangular block shown in the given figure is subjected to pure shear to intensity 'q'. If BE represents the i principal plane and the principal stresses are σ1, σ2 ; then the values of θ, σ1 and σ2 will be respectively.

A. θ°, 90°; + q and - q
B. 30°, 120°; + q and - q
C. 45°, 135°; + and
D. 45°, 135°; + q and - q

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

37. 

The maximum energy stored at elastic limit of a material is called

A. resilience
B. proof resilience
C. modulus of resilience
D. bulk resilience

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

38. 

If the pressure carried by a CBR specimen at 2.5 mm penetration is 3.5 N/mm2, the CBR of the soil is

A. 10%
B. 35%
C. 50%
D. 70%

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

39. 

A close-coiled helical spring with n coils, mean radius R and diameter d is subjected to an axial load W. What is the compression in the spring ?

A.
B.
C.
D.

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

40. 

Activated sludge is the

A. resultant sludge removable from the aeration unit
B. sludge settled in the humus tank
C. sludge in the secondary tank post-aeration rich in microbial mass
D. sludge.in the secondary tank post aeration, rich in nutrients.

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.