EXAMIANS
By boiling water, hardness can be removed if it is due to
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The least thickness of class B cast iron (spun) pipe, is
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Average annual rainfall at any station is the average of annual rainfall over a period of
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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
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As per IS : 1172-1963, water required per head per day for average domestic purposes, is
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For determining the velocity of flow of underground water, the most commonly used non-empirical formula is
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When the reduced level of the water source is higher than the reduced level of the consumer's place, water is generally supplied
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In pressure supply mains, water hammer pressure is reduced by providing
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Surge tanks are used
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Pick up the incorrect statement from the following. The underground sources of water, is from
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