Power Systems
Which of the following contributes to the Rankine cycle efficiency improvement in a thermal power plant

 Reheat of steam an intermediate stages.
 Use of high pressure.
All of these
 Use of steam for heating of boiler feed water.

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Power Systems
In hydroelectric power plants

 both operating and initial cost are low.
  operating cost is low and initial cost is high.
 operating cost is high and initial cost is low.
 both operating and initial cost are high.

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