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Power Systems

Power Systems
At slack bus, which one of the following combinations of variables is not specified?

 V and δ
 P and Q
 P and V
 Q and V

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Power Systems
If R = 84 ohm/Km, G = 10-6 mho/Km, H = 0.01 H/Km, C = 0.061 μ F/Km and frequency = 1000 Hz, then what is the value of propagation constant of the transmission line

 0.01 + j 0.02 per Km.
 0.018 per Km.
 0.09 + j 0.018 per Km.
 None of them.

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Power Systems
Deflectors are provided in

  Pelton wheel.
 Kaplan turbine.
 propeller turbine.
 Francis turbine.

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Power Systems
In load flow studies PV bus is treated as PQ bus when

 phase angle become high
 any of the above
 reactive power goes beyond limit
 voltage at the bus become high

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Power Systems
The water from a catchment is 60*106 cu m annually and hydro station has head of 40 m. Assuming ideal generator and turbine, the power that can be theoretically generated is

 250 kW
 500 kW
 300 kW
 750 kW

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Power Systems
Maximum power capacity of a transmission line can be increased by

 nether 1 nor 2
 increasing voltage level
 decreasing reactance value
 either 1 or 2

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