Water Supply Engineering Acidity in water is caused due to Free CO₂ Mineral acids All the above. Aluminium sulphate Free CO₂ Mineral acids All the above. Aluminium sulphate ANSWER DOWNLOAD EXAMIANS APP
Water Supply Engineering While determining the yield of open wells by the pumping test Velocity of recharging water, increases with depression head Working head is generally limited to ?rd of the critical depression head Maximum safe yield of an open well, is expected at critical depression head Depression head resulting at critical velocity, is called critical depression head Velocity of recharging water, increases with depression head Working head is generally limited to ?rd of the critical depression head Maximum safe yield of an open well, is expected at critical depression head Depression head resulting at critical velocity, is called critical depression head ANSWER DOWNLOAD EXAMIANS APP
Water Supply Engineering Biochemical Oxygen Demand (B.O.D.) of safe drinking water must be 5 10 15 nil 5 10 15 nil ANSWER DOWNLOAD EXAMIANS APP
Water Supply Engineering For determining the velocity of flow of underground water, the most commonly used non-empirical formula is Hazen’s formula Darcy’s formula Slichter’s formula Lacy’s formula Hazen’s formula Darcy’s formula Slichter’s formula Lacy’s formula ANSWER DOWNLOAD EXAMIANS APP
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 400 450 600 500 400 450 600 500 ANSWER DOWNLOAD EXAMIANS APP
Water Supply Engineering In centrifugal pump installation, All listed here The motor may burn out if it is started with empty delivery pipe and with open gate valve The diameter of the pipe at inlet as well as at outlet, is kept smaller than the delivery pipe Pump is properly primed before starting All listed here The motor may burn out if it is started with empty delivery pipe and with open gate valve The diameter of the pipe at inlet as well as at outlet, is kept smaller than the delivery pipe Pump is properly primed before starting ANSWER DOWNLOAD EXAMIANS APP
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