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 steam for heating of boiler feed water.
All of these
 Use of high pressure.

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Power Systems
An hydro-graph indicates

 the average run off during the period.
 the discharge at any time during the period under consideration.
All of these
 the maximum and minimum run off during the period.

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