# Civil Engineering - UPSC Civil Service Exam Questions

6.

A river model is constructed to a horizontal scale of 1:1000 and a vertical scale of 1:100. A model discharge in the prototype, of what magnitude ?

 A. 102 m3 /s B. 103 m3 /s C. 104 m3 /s D. 105 m3 /s

Explanation:

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7.

If a 30 m length can be taped with a precision of ± 0.01 m, then the standard error of measuring 1.08 km with the same precision will be

 A. ± 0.54 m B. ± 0.45 m C. ± 0.36 m D. ± 0.06 m

Explanation:

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8.

a grit chamber of dimensions 12.0 m x 1.50 x 800 m liquid depth has a flow of 720 m3/hr. Its surface loading rate and detention time are, respectively,

 A. 40000 m3/hr/m2 and 1.2 minute B. 40000 1 ph/m2 and 40 minutes C. 40 m/hr/m2 and 12 minutes D. 40000 1 ph/m2 and 1.2 minute

Explanation:

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9.

In signals system design of Railways the distance at which the outer signal is to be placed is decided on basis of the

 A. Allowable speed B. Running speed C. Minimum speed D. Journey speed

Explanation:

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10.

Which one of the following is the best method for the stabilization of the clayey subgrade in water-logged area ?

 A. Cement stabilization B. Lime stabilization C. Bitumen stabilization D. Stabilization by grouting