Civil Engineering - UPSC Civil Service Exam Questions

41. 

In a direct shear test the shear stress and normal stress on a dry sand sample at failure are 0.6 kg/cm2 and 1 kg/cm2 respectively. The angle of internal friction of the sand will be nearly

A. 25°
B. 31°
C. 37°
D. 43°

Answer: Option B

Explanation:

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42. 

In the network given in figure, the maximum number of shovels and dumpers required are

A. 6 shovels and 14 dumpers on days 9 and 10
B. 24 shovels and 10 dumpers on days 3 and 4
C. 30 shovels and 90 dumpers on all days
D. 10 shovels and 24 dumpers on days 3 and 4

Answer: Option D

Explanation:

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43. 

Consider the following statements :
A good soil for making bricks should contain
1. about 30% alumina
2. about 10% lime nodules
3. a small quantity of iron oxides
4. about 15% magnesia.
Of these statements :

A. 1 and 2 are correct
B. 1 and 3 are correct
C. 1, 3 and 4 are correct
D. 2, 3 and 4 are correct

Answer: Option B

Explanation:

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44. 

Service connection consists of

A. ferrule, stopcock and gooseneck
B. ferrule, check valve and gooseneck
C. stopcock, meter and sluice valve
D. sluice valve, check valve and meter

Answer: Option A

Explanation:

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45. 

In the phase diagrams given, the change due to initial state changing into final state is shown due to consolidation. Depth of soil layer undergoing consolidation is H ; e0 is initial void ratio; ef is final void ratio ; Δe is change in void ratio. Indicate which of the following expressions gives settlement of the layer :

A.
B.
C.
D.

Answer: Option D

Explanation:

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