# Civil Engineering - UPSC Civil Service Exam Questions

1.

For Froude number of a hydraulic jump is 5.5. The jump can be classified as a/an:

 A. undularjump B. oscillating jump C. weak jump D. steady jump

Explanation:

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2.

A cantilever pin-jointed truss carries one load P at the point Z as shown in the given figure. The hinges in the vertical wall are at A and D. The truss has only three horizontal members AC, CG and GZ.
The nature of force in member AB A. is tensile B. is zero C. is compressive D. cannot be predicted

Explanation:

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3.

A saturated stiff clay has unit weight 2 gm/cm3 and unconfined compressive strength 2 kg/cm2. The depth of tension crack that would develop in this clay is

 A. 2 m B. 5 m C. 10 m D. 20 m

Explanation:

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4.

Consider the following statements :
1. In a member subjected to uniaxial tensile force the maximum normal stress is the external load divided by the maximum cross-sectional area.
2. When the structural member is subjected to uniaxial loading, the shear stress is zero on a plane where the normal stress is maximum.
3. In a member subjected to uniaxial loading, the normal stress on the planes of maximum shear stress is less than the maximum.
Of these statements :

 A. 1 and 2 are correct B. 1 and 3 are correct C. 2 and 3 are correct D. 1, 2 and 3 are correct

Explanation:

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5.

.The displacement thickness of a boundary layer is

 A. The distance to the point where (v/V) = 0.99 B. the distance where the velocity v is equal to the shear velocity V∗ that is where v = V∗ C. the distance by which the main flow is to be shifted from the boundary to maintain the continuity equation D. one-half the actual thickness of the boundary layer