# Civil Engineering - UPSC Civil Service Exam Questions

11.

The moment of inertia of a square cross-section of side 'b' about its diagonal is

 A. b4/3 B. b4/6 C. b4/8 D. b4/12

Explanation:

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12.

A particle of mass M is attached to a light horizontal wire which is stretched tightly between two fixed ends with a tension T. If a and b are the distances of the particle from the two ends, then the period of a small transverse oscillation of the particle is given by

 A. B. C. D. Explanation:

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13.

What is the ratio of the permissible bearing stress in power driven shop rivets relative to the yield stress of mild steel ?

 A. 1 B. 0.8 C. 0.6 D. 0.4

Explanation:

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14.

If the methyl orange alkalinity of water equals or exceeds total hardness, all of the harness is

 A. non-carbonate hardness B. carbonate hardness C. pseudo hardness D. negative non-carbonate hardness

Explanation:

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15.

Which one of the following statements is correct ? The number of unknowns to be determined in the stiffness method is equal to :

 A. the static indeterminacy B. the kinematic indeterminacy C. the sum of kinematic indeterminacy and static indeterminacy D. two times the number of supports