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Power Systems

Power Systems
Ferranti effect occurs under

 no load
 any of the above
 half load
 full load

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Power Systems
A 1-phase transmission line has an impedance (4 + 3j ) Ω. Find the power factor of the load for zero voltage regulation?

 0.8 lead
 0.8 lag
 0.6 lag
 0.6 lead

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Power Systems
A hydroelectric power station is commonly found in

  hilly areas.
 grasslands.
 swamps.
 desert areas.

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Power Systems
Which of the following relays is/are unit protection relays?

 Differential relays
 Buccholz relays
 both 1 and 2
 over current relays

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Power Systems
If the load is short circuited, then reflection coefficient of voltage is

 -1
 0
 1
 -2

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Power Systems
The load duration curve for a system is 8 hours 30 MW, 16 hours 25 MW and 24 hours 20 MW. The load factor will be

 0.44.
  0.83.
 0.25.
 1.3.

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