Power Systems
A hydro electric generating station is supplied from a reservoir of capacity 5 × 10 − 6 cubic meters at a head of 200 meters. Find the total energy available in KWh if the overall efficiency is 75 %

 4.06 × 106 kWh.
 3 × 106 kWh.
  2.044 × 106 kWh.
 5 × 106 kWh.

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Power Systems
The draft tube is provided to

  increase the acting head on the water wheel.
 reduce the effect of water hammer.
None of these
 raise the water surface of the stream to create an artificial head.

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