Power Systems
Storage requirement can be determined from

 mass Curve.
 hydro-graph.
  both B and C.
 flow duration curve.

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Power Systems
The draft tube is provided to

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

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Power Systems
The incremental fuel costs for two generating units G1 and G2 are given by Ic1 = 25 + 0.2 PG1 and Ic2 = 32 + 0.2 PG2, where PG1 and PG2 are real powers generated by the units. The economic allocation for a total load of 250 MW, neglecting transmission loss, is given by

 PG1 = 109.75 MW and PG2 = 140.25 MW
 PG1 = 142.5 MW and PG2 = 107.5 MW
 PG1 = 125 MW and PG2 = 125 MW
 PG1 = 100 MW and PG2 = 150 MW

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