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Water Supply Engineering

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

Filtration
None of these
Screening
Sedimentation

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Water Supply Engineering
Mathamoglobinemia or blue baby disease is caused due to

Chlorides
Nitrites
Sulphides
Nitrates

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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 flow velocity
using thicker pipes
reducing the draw down and the pumping rate

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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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Water Supply Engineering
The expected discharge to be obtained from an open well sunk in coarse sand is 0.0059 cumec. If the working depression head of the well is 3 m, the minimum diameter of the well, is

3.00 m
2 m
2.25 m
2.50 m

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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

450
400
500
600

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