Civil Engineering - UPSC Civil Service Exam Questions

6. 

A cantilever beam of T cross-section carries uniformly distributed load. Where does the maximum magnitude of the bending stress occur ?

A. At the top of cross-section
B. At the junction of flange and web
C. At the mid-depth point
D. At the bottom of the section

Answer: Option D

Explanation:

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7. 

Which of the following are claimed as advantageous in respect of aerobic sludge digestion as compared to anaerobic sludge digestion ?
1. Lower BOD concentration in supernatant liquor.
2. Production of a sludge with excellent dewatering propensity.
3. Greater production of methane.
4. Lesser operating cost.
5. Lesser capital cost.
Select the correct answer using the codes given below :

A. 1, 2 and 4
B. 2, 3, 4 and 5
C. 3, 4 and 5
D. 1, 2 and 5

Answer: Option D

Explanation:

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8. 

Which one of the following statements is not correct ?
A control section in an open channel is the site

A. where the flow quantity can be controlled
B. at which flow is known to be critical
C. where the discharge can be measured
D. where the specific energy is determined

Answer: Option B

Explanation:

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9. 

For a given storm, other factors remaining same :

A. Basins with large drainage densities give smaller flood peaks.
B. Low drainage density basins give shorter time bases of hydrographs.
C. The flood peak is independent of the drainage density.
D. Basins having low drainage density give smaller peaks in flood hydrographs.

Answer: Option D

Explanation:

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10. 

Two small orifices A and B of diameters 1 cm and 2 cm, respectively, are placed on the sides of a tank at depths of h1 and h2 below the open liquid surface. If the discharges through A and B are equal, then the ratio of h1 and h2 (assuming equal Cd values) will be

A. 16 : 1
B. 8 : 1
C. 4 : 1
D. 2 : 1

Answer: Option A

Explanation:

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