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Power Systems

Power Systems
Find the propagation constant, if impedance is 10Ω and admittance is 10 â„§?

 5
 1
 100
 10

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Power Systems
Three generators rated 100 MVA, 11 kV have an impedance of 0.15 pu each. If in the same plant, these generators are being replaced by a single equivalent generator, the effective impedance of equivalent generator will be

 0.45 pu
 0.25 pu
 0.05 pu
 0.15 pu

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Power Systems
a 50 Hz, 3-phase synchronous generator has inductance per phase of 15 mH. The capacitance of the generator and circuit breaker is 0.002 µF. What is its natural frequency?

 29 kHz
 290 kHz
 29 MHz
 2.9 kHz

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Power Systems
A transmission line has a reactance of 1 Pu is operating at Vs = Vr = 1 Pu. The generator is connected at source end which is delivering 0.5 Pu of active power. Find the load angle?

 45°
 60°
 30°
 35°

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Power Systems
Earth fault relay uses the which of the following sequence currents?

 any of the above
 positive sequence
 negative sequence
 zero sequence

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Power Systems
Among the following which is not non conventional energy

  Geothermal.
  Wind.
  Nuclear.
  Tidal.

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