If two pumps identical in all respects and each capable of delivering a discharge Q against a head H are connected in series, the resulting discharge is
Cavitation parameter a defined in terms of NPSH (net positive suction head) and net head H as, σ =
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In a pump installation the local atmospheric pressure is 10 m of water, vapour pressure head is 0.4 m (abs), height of the pump above sump water level is 5 m. For a head loss in the suction side of 0.6 m, the NPSH is
Water is to be lifted by a net head of 184 m. Identical pumps with specific speed of 30 and rotative of 1500 rpm capable of discharging 200 L/s are available. The number of pumps required is [Take 1843/4 = 50]
Water is pumped through a pipeline to a hieght of 10 m at the rate of 0.1 m3/s. Frictional and other minor losses are 5 m. Pumping power required, in kW is
In a reciprocating pump without air vessel, the friction head in the delivery pipe is maximum at the crank angle θ =
The indicator diagram of a reciprocating pump is a plot of
Actual indicator diagram for a single stage "reciprocating pump is represented by
An air vessel in the delivery side of a reciprocating pump
Which one of the following is not a positive displacement pump?
45 videos|314 tests
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45 videos|314 tests
|