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Power Systems

Power Systems
Pumped storage plant is a

 peak load plant
 both 1 and 2
 base load plant
None of these

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Power Systems
The positive, negative and zero sequence impedances of a transmission line are 0.5,0.5 and 1.1 pu respectively. The self (Zs) and mutual (Zm) impedances of the line will be given by

 Zs = 0.5 pu, Zm =0.6 pu
 Zs = 0.2 pu, Zm =0.7 pu
 Zs = 0.6 pu, Zm =0.5 pu
 Zs = 0.7 pu, Zm =0.2 pu

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Power Systems
Gas turbine power plants for maximum efficient may have

 Reheating.
  All of above.
 Multistage compression.
 Heat exchangers.

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Power Systems
The conversion ratio of breeder reactor are

 1.
  greater than 1.
 none of above.
 less than 1.

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

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

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Power Systems
The charging reactance of 50 km transmission line is 1500 Ω. What is the charging reactance for 100 km length of line?

 1000 Ω
 750 Ω
 1500 Ω
 3000 Ω

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