The least thickness of class B cast iron (spun) pipe, is
Most commonly used pump for lifting water in water supply mains, is
According to IS : 1172-a minimum oflitres of water capita per day, is required for
Economic height of a dam is the height corresponding to which
The R.L. of ground water table on the sides of a valley ism whereas R.L. of the stream water ism. Ifslope consists of pervious soil between R.L.m tom, the gravity spring may be expected at the point of reduced level
Distribution mains of any water supply, is normally designed for its average daily requirement
Water supply system includes
The factor affecting per capita demand, is
If pH value of water is
Corrosion of a pipe
Pick up the incorrect statement from the following. The underground sources of water, is from
In pressure supply mains, water hammer pressure is reduced by providing
Pick up the correct statement from the following :
Disinfection of drinking water, is done to remove
Sunlight
Manholes along the mains from the source to a city are provided atm intervals in
Asbestos pipes are
The expected discharge to be obtained from an open well sunk in coarse sand is 0.cumec. If the working depression head of the well is 3 m, the minimum diameter of the well, is
The population growth curve is
The maximum depth of sedimentation tanks is limited to
Average annual rainfall at any station is the average of annual rainfall over a period of
The transitional middle portion of a logistic curve follows
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