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Power Systems

Power Systems
Find the surge impedance of a line when inductance is 160 mH and capacitance is 1µF?

 400 Ω
 800 Ω
 200 Ω
 160 Ω

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Power Systems
The rating of CB is in terms of

  current.
  voltage.
  VAR.
  volt - ampere.

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Power Systems
Oxide film arrestor has which of the following properties?

 Installed at points of transmission line where daily visit is difficult.
 Does not require daily charging.
 It is expensive.
 Both A and B.

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Power Systems
Which of following generating plants has the minimum operating cost

 Hydroelectric plant.
 Steam plant.
 Nuclear plant.
 Diesel plant.

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Power Systems
The value of inductance used for compensation of arcing grounds is

 3/ω²C
 1/3ω²C
 ω²C/3
 3ω²C

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Power Systems
Which of the following faults is/are treated as external faults?

 Failure of prime mover of the generator
 Over voltage
All of these
 Failure of excitation

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