Civil Engineering :: UPSC Civil Service Exam Questions
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For Froude number of a hydraulic jump is 5.5. The jump can be classified as a/an:
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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
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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
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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 : -
.The displacement thickness of a boundary layer is
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The axial load which just produces the condition of elastic instability in a column is
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If R is the radius of the circular railway curve in metres and D is the degree of the curve, then which one of the following is the expression for D ?
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Given below are methods of compaction :
1. Vibration technique
2. Flooding the soil
3. Sheeps-foot roller
4. Tandem roller
5. Heavy weights dropped from a height.
The methods suitable for cohesionless soils include -
The ratio of torsional moments of resistance of a solid circular shaft of diameter D and a hollow shaft having external diameter D and internal diameter d is given by
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Consider the following statements relating to triaxial tests :
1. Change in length of the specimen in a triaxial shear test is required to be accounted for in the calculation of stresses at failure.
2. In 'Drained Triaxial Shear Test', drainage is permitted under a specified all-round pressure until consolidation is complete. The principal stress difference is then applied with no drainage being permitted.
3. Unconfined compression test is a special case of triaxial shear test.
Of these statements :
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A.
The distance to the point where (v/V) = 0.99
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B.
the distance where the velocity v is equal to the shear velocity V∗ that is where v = V∗
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C.
the distance by which the main flow is to be shifted from the boundary to maintain the continuity equation
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D.
one-half the actual thickness of the boundary layer
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