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Power Systems

Power Systems
Mho relay is used for protection of

  none of these.
  long lines.
  short lines.
  medium lines.

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Power Systems
Rankine cycle efficiency of a steam power plant is of

  20 - 30 %.
  45 - 80 %.
  30 - 45 %.
  60 - 80 %.

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Power Systems
Which of the following power plants can generate power at unpredictable or uncontrollable time

 Pulverising unit.
 Cooling tower.
 Wind turbine.
 Condenser.

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Power Systems
The SWR on a lossless transmission line of the characteristic impedance 100 ohm is 3. The line is the terminated by

 A resistance of j100/3 ohm.
 A resistance of 100 ohm.
 A resistance of j300 ohm.
 A resistance of 100/3 ohm.

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Power Systems
In thermal power plants the size of coal after crushing

  300 mm.
 40 mm.
  20 - 25 mm.
 200 - 205 mm.

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Power Systems
Which of the following statement is/are true regarding infinite line?

 both 2 and 3
 It has infinite voltage
 It maintains the constant voltage
 It has infinite length

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