# Civil Engineering - UPSC Civil Service Exam Questions

31.

What is the ratio of the forces in the members AB, BE and AE of the pin-joined truss shown in the figure? A. 5 : 4 : 3 B. 4 : 3 : 5 C. D. None of the above

Explanation:

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32.

A sewer, 1000 mm in diameter is laid at a slope to obtain a velocity of 0.8 m/s when running full. Assuming Manning's n as constant, what is the velocity in this sewer if it is running half full.

 A. 0.2 m/s B. 0.4 m/s C. 0.6 m/s D. 0.8 m/s

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33.

For the network shown in the above figure (the number on each arrow denotes the time duration of activity in days), the earliest star time, in days for activity 5-6 is A. 8 B. 7 C. 9 D. 11

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34.

A clay layer 5 m thick in field takes 300 days to attain 50% consolidation with condition of double drainage. If the same clay layer is underlain by hard rock then the time taken to attain 50% consolidation will be

 A. 300 days B. 600 days C. 900 days D. 1200 days

Explanation:

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35.

Two forces P = 6 N and Q = 10 N act on a particle and their lines of action are inclined to each other at an angle of 60°. What is the magnitude of the third force R which will keep the particle in equilibrium ?

 A. 13.30 N B. 13.89 N C. 14.00 N D. 14.02 N