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Power Systems

Power Systems
If sparsity of a 5 bus transmission line is 0.4. Find the number of transmission lines?

 3
 6
 4
 5

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Power Systems
Peak load power plants is/are

 nuclear plants
 both 1 and 2
 pumped storage plant
 diesel plant

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Power Systems
For variable heads of near about but less than 30 meters, which type of turbine is used in hydro power station?

 Francis
 Kaplan
 Pelton
None of these

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Power Systems
Reactance relays are used for the protection of

 short transmission lines only
All of these
 medium transmission lines only
 long transmission lines only

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Power Systems
The sequence components of the fault current are as follows : Ipositive = j1.5 pu, Inegative = − j0.5 pu, Izero = − j pu Which fault is this?

  LG.
  LLG.
  LLLG.
  LL.

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Power Systems
In a short circuit test circuit breaker, time to reach the peak re-striking voltage 60 microsecond & the peak re-striking voltage 120 kV. Determine average RRRV (Rate of rise re-striking voltage)?

  3 × 106 kV / sec.
 1 × 106 kV / sec.
 3.5 × 106 kV / sec.
  2 × 106 kV / sec.

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