Power Systems
The power output from an hydroelectric plants depend on

 type of dam, head, system efficiency.
  discharge, system efficiency.
 type of dam, type of catchment area and discharge.
 type of turbine, type of dam and type of catchment area.

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

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