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Civil Engineering - Water Supply Engineering

Exercise : Water Supply Engineering - Section 7
31.
The intake opening is generally covered by a screen to prevent entry of debris etc. and its level is kept
at the level of water of the source
at the bottom of water of the source
at about 2.5 m above the bottom
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
32.
In rapid sand filters the ratio of length and diameter of the lateral, should not be greater than
10
15
20
25
Answer: Option
Explanation:
No answer description is available. Let's discuss.
33.
The maximum permissible hardness for public supplies is
95 mg/litre
105 mg/litre
115 mg/litre
125 mg/litre
150 mg/litre.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
34.
Plain chlorination is used for water
with turbidities less than 20 mg/litre
obtained from clear lakes
consumed during emergencies
supplies to armies during war
all the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
35.
Underground water is obtained from
rains
rivers
lakes
reservoirs
springs.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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