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Power Systems

Power Systems
Which of the following is used in thermal plants

 Rankine cycle
 Otto cycle
 Joule cycle
All of these

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Power Systems
The conductor of a 10 Km long single phase, two wire line are separated by a distance of 1.5 m the diameter of each conductor the inductance of the circuit is

 25.8 mH.
  23.8 mH.
 21.2 mH.
 23.33 mH.

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Power Systems
What is the approximate efficiency of a normal thermal power station?

 20-25%
 45-55%
 30-40%
 60-70%

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Power Systems
Specified quantities of slack bus are

 P and V
 P and Q
 P and δ
 V and δ

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Power Systems
Earthing switch is used for

All of these
 discharging residual energies
 measuring of safety voltage
 protection of equipment from ground faults

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Power Systems
Operating cost of thermal power station is

 less than that of nuclear power plant.
 less than that of hydroelectric power plant.
  less than that of diesel power plant.
 is the same as that of nuclear power plant.

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