Civil Engineering :: Water Supply Engineering
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Pick up the correct statement from the following :
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Hardness of water is caused due to
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Flow through period, in sedimentation tanks, is
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Normal values of overflow rate for plain sedimentation tank, is
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If p is total internal pressure, d is diameter of pressure conduit and t is thickness of conduit, the Hoop's stress is
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The force which develops in a pressure conduit supported on trestles, is
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After cleaning a slow sand filter, the filtered water is not used for
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A pressure conduit laid under ground, may not be subjected to
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The period of cleaning of a slow sand filter, is usually
A.
The internal pressure within a pipe, is caused due to water head and hammer pressure
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B.
The internal pressure in a pipe running full is equal to vertical ordinate between hydraulic gradient line and centre of the pipe
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C.
In pressure pipes with water at rest, the pressure is equal to water head
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D.
Sudden closure of a valve, causes the water hammer pressure
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E.
All the above.
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