Water Supply Engineering - Section 1 (4)

Directions to Solve

Water Supply Engineering - Section 1

This is an engineering field and if you think your aptitude level
is good in this field then you can solve the MCQs available in this section.

25.

Corrosion of well pipes may not be reduced by

A.	reducing the draw down and the pumping rate
B.	reducing the flow velocity
C.	using thicker pipes
D.	using screens having larger area of openings
E.	none of these.

Answer: Option D

Explanation:

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

26.

In distribution pipes, drain valves are provided at

A.	lower point
B.	higher point
C.	junction points
D.	any where.

Answer: Option A

Explanation:

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

27.

A high velocity of wash water is required for

A.	rapid gravity filter with strainers
B.	rapid gravity filter without strainers
C.	slow sand filter with strainers
D.	slow sand filter without strainers
E.	none of these.

Answer: Option B

Explanation:

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

28.

The maximum permissible nitrites in public water supplies, is

A.	Nil
B.	0.5 P.P.M.
C.	1.0. P.P.M.
D.	1.5 P.P.M.
E.	200 P.P.M.

Answer: Option A

Explanation:

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

29.

According to Kuichling's formula, fire demand in litres per minute for a population of P thousands, is

A.	3182 √P
B.
C.	4637 √P [1 - 0.01 √P]
D.	5663 √P.

Answer: Option A

Explanation:

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

30.

Pick up the correct statement from the following :

A.	Detention period for plain sedimentation tanks ranges between 4 to 8 hours
B.	Detention period for sedimentation tanks, using coagulants usually ranges between 2 to 4 hours
C.	The horizontally flow velocity in sedimentation tanks, is generally limited to 0.3 m/minute
D.	All the above.

Answer: Option D

Explanation:

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

31.

Most satisfactory formula for an estimate of fire demand Q for a city of population P in thousands for Indian conditions, is

A.
B.	Q = 1640 √P (1 - 0.01 √P)
C.	Q = 3180 √P
D.	none of these.

Answer: Option C

Explanation:

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

32.

Corrosion of a pipe

A.	reduces its life span
B.	reduces its carrying capacity
C.	adds colour to water
D.	adds odour to water
E.	all the above.

Answer: Option E

Explanation:

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

Water Supply Engineering - Section 1 (4)

Water Supply Engineering - Section 1

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