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Power Systems

Power Systems
The amount of ash content in Indian coal

  60 %.
 20 %.
  45 %.
 35 %.

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Power Systems
Switchgear equipment include

  fuses.
  switches.
  relays and CB.
  all of these.

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Power Systems
Cheapest plant in operation and maintenance is

  nuclear.
  steam power.
  diesel power.
  hydroelectric.

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Power Systems
Lightning arresters are used to protect electrical equipment against

  over voltages due to indirect lightning stroke.
 direct strokes of lightning.
 power frequency of over voltages.
 over currents due to lightning stroke.

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

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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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