Power Systems
In an interconnected power system, the most suitable power plant to meet the peak load condition is

 hydro power plant
 nuclear plant
 thermal plant
 pumped storage plant

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Power Systems
Per unit of any quantity is defined as

 base value of quantity /actual value of quantity in same units
 actual value of quantity /base value of quantity in same units
 actual value of quantity /base value of quantity in different units
 base value of quantity /actual value of quantity in different units

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

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