Civil Engineering - Waste Water Engineering

36. 

For the open drain (N = 0.025) shown in the below figure, the discharge is

A. 26.88 cumecs
B. 27.88 cumecs
C. 28.88 cumecs
D. 29.88 cumecs.

Answer: Option C

Explanation:

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37. 

If the diameter of a sewer is 150 mm, the gradient required for generating self cleansing velocity, is

A. 1 in 60
B. 1 in 100
C. 1 in 120
D. none of these.

Answer: Option B

Explanation:

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38. 

The average temperature of sewage in India, is

A. 10°C
B. 15°C
C. 20°C
D. 25°C
E. 30°C.

Answer: Option C

Explanation:

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39. 

The most widely used pump for lifting sewage is

A. centrifugal pump
B. reciprocating pump
C. pneumatic ejector
D. air pressure pump.

Answer: Option A

Explanation:

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40. 

The sewer which resists sulphide corrosion, is

A. Brick sewer
B. Cast iron sewer
C. R.C.C. sewer
D. Lead sewer
E. None of these.

Answer: Option D

Explanation:

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