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Power Systems

Power Systems
The sequence components of the fault current are as follows: IR1 = j1.5 pu, IR2 = -j0.5 pu, IR0 = -j1. The type of fault is

 LL
 LLG
 LG
 LLL

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Power Systems
Surge impedance loading (SIL) is represented by

 both 1 and 2
 Vl²*√(C/L)
 Vl²/Zs
 Vph²/Zs

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

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

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Power Systems
The arc voltage produced in an AC circuit breaker is always

 in phase opposition with the arc current.
 leading the arc current by 90°.
  in phase with the arc current.
 lagging the arc current by 90°.

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Power Systems
A CT is connected in ___________________ with the line.

  both A and B.
  not connected.
  series.
  across.

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Power Systems
For harnessing low variable water heads, the suitable hydraulic turbine with reaction and adjustable vanes is

 Impeller.
  Kaplan.
 Pelton.
 Francis.

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