Hydraulics and Fluid Mechanics in ME
A turbine is required to develop 1500 kW at 300 r.p.m. under a head of 150 m. Which of the following turbine should be used?

Pelton wheel with two or more nozzles
Pelton wheel with one nozzle
Kaplan turbine
Francis turbine

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Hydraulics and Fluid Mechanics in ME
Mechanical efficiency of a centrifugal pump is the ratio of

Actual work-done by the pump to the energy supplied to the pump by the prime mover
Energy available at the impeller to the energy supplied to the pump by the prime mover
Energy supplied to the pump to the energy available at the impeller
Manometric head to the energy supplied by the impeller per kN of water

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