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Power Systems

Power Systems
Cheapest plant in operation and maintenance is

  diesel power.
  hydroelectric.
  steam power.
  nuclear.

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Power Systems
If transmission line parameters A and B are 0.9∠0° and 200∠90° respectively. Find the shunt reactor required to compensate the ferranti effect?

 2000 Ω
 1500 Ω
 3000 Ω
 750 Ω

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Power Systems
In thermal plant most of the energy is wasted in

 boiler
 ESP
 turbines
 condenser

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Power Systems
Which of following materials can be used as coolant

 Helium.
  Any of above.
 Heavy water.
 CO2.

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Power Systems
In a 3-phase transmission line, each phase is supported by 3 insulated discs, maximum voltage of each disc is 20 kV. Find the operating voltage of the transmission line per phase if efficiency of string is 80.6%.

 20 kV
 83.76 kV
 48.36 kV
 52.84 kV

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Power Systems
When a neutral point of 3 - Φ system is directly connected to earth then it has what type of grounding?

  Resistance.
  Solid.
  Peterson coil.
  Reactance.

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