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Power Systems

Power Systems
India’s largest thermal power station is located at

 Kota.
 Sarni.
 Neyveli.
 Chandrapur.

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Power Systems
In which of the following given faults, all the sequence currents are equal?

 LLL
 LLG
 LL
 LG

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

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

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Power Systems
A transmission line has surge impedance of 400 Ω, operating at Vs = Vr = 400 kV line is compensated with a shunt capacitance of 30%. The line is connected to a generator delivering 200 MW. Find the load angle with out and with compensation respectively?

 30° and 26°
 26° and 30°
 45° and 26°
 30° and 45°

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Power Systems
A network containing 50 buses in which 10 are the voltage control buses, 6 are the generator buses. Find the size of the Jacobian matrix?

 83*83
 33*33
 34*34
 84*84

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Power Systems
The annual depreciation of hydro power plant is about

  0.5 - 1.5 %.
 15 - 20 %.
 10 - 15 %.
 20 - 25 %.

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