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Power Systems

Power Systems
Cheapest plant in operation and maintenance is

  diesel power.
  steam power.
  hydroelectric.
  nuclear.

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Power Systems
In an induction relay for a particular current setting the operating time 4 sec. When the time multiplier setting is 0.8 if the time multiplier setting is rest to 1 the operating time is

  1.
  un changed.
 5.
 10.

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Power Systems
Bundled conductors are used for EHV transmission lines primarily for reducing the

 voltage drop across the line
 copper loss
 corona loss
 surge impedance of the line

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Power Systems
The power station that does not requier any moving part is

 Solar power generation.
 Tidal power generation.
 Wind power generation.
  Thermonic convertor.

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Power Systems
Counter poise is used for

 less surge impedance
 more surge impedance
 proper discharging of lighting surges
 reduce losses

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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?

 1500 Ω
 3000 Ω
 1000 Ω
 750 Ω

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