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Water Supply Engineering

Water Supply Engineering
The factor affecting per capita demand, is

All listed here
size of the city
cost of water
climatic conditions

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Water Supply Engineering
Corrosion of well pipes may not be reduced by

using screens having larger area of openings
reducing the draw down and the pumping rate
using thicker pipes
reducing the flow velocity

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Water Supply Engineering
The process of passing water through beds of granular materials, is called

None of these
Screening
Sedimentation
Filtration

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Water Supply Engineering
To pump water from a water reservoir 3 m deep and maximum water level at 135 m, a pump is installed to lift water up to R.L. 175 m at a constant rate of 36,00,000 litres per hour. If the length of the pipe is 1506 m and f = 0.01, ignoring other minor losses and assuming the economical diameter from Lea's formula D = 1.2 √Q, the water horse power of the pump is

600
500
400
450

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Water Supply Engineering
Surge tanks are used

as overflow valves
to guard against water hammer
for storage water
to increase the velocity in a pipeline

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Water Supply Engineering
Turbidity of raw water is a measure of

None of these
Acidity of water
Suspended solids
O.D

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