# Civil Engineering - UPSC Civil Service Exam Questions

16.

A right-angled triangular channel, symmetrical in section about the vertical, carries a discharge of 5 m3 /s with a velocity of 1.25 m/s. What is the approximate value of the Froude number of the flow ?

 A. 0.3 B. 0.4 C. 0.5 D. 0.6

Explanation:

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17.

Which one of the following pairs is not correctly matched ?

 A. Water losses....Evaporation B. Runoff....Stream flow C. Percolation....Soil Erosion D. Storm....Precipitation

Explanation:

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18.

Which of the following pairs is correctly matched ?

 A. Froude's number .... Intertial to surface tension force B. Mach number .... Inertial to elastic force C. Euler number .... Inertial to gravity force D. Reynolds number .... Inertial to pressure force

Explanation:

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19.

A section of a solid circular shaft with diameter D is subjected to bending moment 'M' and torque (T). The expression for maximum principal stress at the section is

 A. B. C. D.

Explanation:

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20.

The flownet of activities of a project is shown in the given figure. The duration of the activities are written along the arrows. The critical path of the activities is along

 A. 1-2-4-5-7-8 B. 1-2-3-5-7-8 C. 1-2-3-6-7-8 D. 1-2-4-5-3-6-7-8