# Civil Engineering - UPSC Civil Service Exam Questions

31.

A constant angle arch dam when compared to a constant radius arch dam utilizes concrete quantity of about

 A. 33% B. 43% C. 73% D. 143%

Explanation:

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32.

A bar of elastic material is subjected to a direct compressive stress σ1 in the longitudinal direction. Suitable lateral compressive stress σ2 is applied along each of the other two lateral directions to limit the net strain in each of the lateral directions to half the magnitude of what it could be under σ1 acting alone. If μ is the Poisson's ratio of the material, then the magnitude of σ2 is

 A. B. C. D.

Explanation:

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33.

In a simply supported wooden beam under uniformly distributed load, a hole has to be made in the breadthwise direction at mid-span to provide a pipeline. From structural strength point of view, it would be advisable to have the hole made at

 A. the bottom B. the top C. mid-depth D. 1/4 depth either from the top or the bottom

Explanation:

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34.

The water supply to a house begins with the connection of the service pipe with the municipal water mains. The connections comprises :
1. Stopcock
2. Goose neck
3. Ferrule
4. Water meter
The correct statement of these connections is :

 A. 1, 2, 3, 4 B. 3, 1, 2, 4 C. 3, 2, 1, 4 D. 1, 2, 4, 3

Explanation:

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35.

A point load applied at shear centre induces :

 A. Zero shear force B. Zero bending C. Pure twisting D. Pure bending