Waste Water Engineering - Section 1 (5)

Directions to Solve

Waste Water Engineering - Section 1

Waste water engineering is a branch of this engineering and in
the following section you will find the important MCQs related to this field.

33.

An inverted siphon is designed generally for

A.	one pipe
B.	two pipes
C.	three pipes
D.	four pipes.

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

34.

If the over land flow from the critical point to the drain is 8 km and the difference in level is 12.4 m, the inlet time is

A.	2 hours
B.	3 hours
C.	4 hours
D.	5 hours.

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

35.

Self-cleansing velocity is

A.	velocity at dry weather flow
B.	velocity of water at flushing
C.	velocity at which no accumulation remains in the drains
D.	velocity of water in a pressure filter.

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

36.

In a fully mechanised composting plant, involves

A.	mechanized receipt
B.	mechanized segregation
C.	mechanized pulverising of refuse
D.	all of these.

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

37.

For the survival of fish in a river stream, the minimum dissolved oxygen is prescribed

A.	3 PPm
B.	4 PPm
C.	5 PPm
D.	10 ppm.

Answer: Option B

Explanation:

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38.

In olden days the type of section adopted in trunk and out fall sewers was

A.	parabolic shaped
B.	horse shoe shaped
C.	egg shaped
D.	circular shaped.

Answer: Option B

Explanation:

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39.

Pick up the correct statement from the following :

A.	In treated sewage, 4 PPm of D.O. is essential
B.	Only very fresh sewage contains some dissolved oxygen
C.	The solubility of oxygen in sewage is 95% that is in distilled water
D.	All the above.

Answer: Option D

Explanation:

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40.

The width of a rectangular sewer is twice its depth while discharging 1.5 m/sec. The width of the sewer is

A.	0.68 m
B.	0.88 m
C.	1.36 m
D.	1.76 m.

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

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