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

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Power Systems
The VSWR of transmission line is

 Directly proportional to characteristic impedance and inversely to load impedance.
 Proportional to load and characteristic impedance.
 Directly proportional to voltage minimum and inversely proportional to voltage maximum.
  Directly proportional to load impedance and inversely to characteristic impedance.

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