# Civil Engineering - UPSC Civil Service Exam Questions

26.

Which one of the following would help prevent the escape of foul sewer gases from a water closet ?

 A. Air gap B. Vent pipe C. Gulley trap D. None of the above

Answer: Option D

Explanation:

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27.

The beam shown in the given figure has a design bending moment value of

 A. 8 kNm B. 6 kNm C. 4 kNm D. 2 kNm

Answer: Option D

Explanation:

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28.

Length of line measured with a 20 m chain was found to be 634.4 m. If the chain was 5 cm too long, throughout the measurement, then the true length of the line is

 A. 635.990 m B. 635.986 m C. 632.818 m D. 632.814 m

Answer: Option B

Explanation:

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29.

What does the Williot-Morr diagram yield ?

 A. Forces in members of a truss B. Moments in a fixed beam C. Reactions at the supports D. Joint displacement of a pinjointed plane frame

Answer: Option D

Explanation:

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30.

The runway length after correcting for elevation and temperature is 2845 m. If the effective gradient on runway is 0.5 per cent, then the revised runway length will be

 A. 2845 m B. 2910 m C. 3030 m D. 3130 m

Answer: Option D

Explanation:

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