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Power Systems

Power Systems
In thermal plant most of the energy is wasted in

 boiler
 ESP
 turbines
 condenser

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Power Systems
A 3-phase transmission line operating at Vs = 400 kV and has ABCD parameters A= D = 0.8∠0°, B = 100∠90° Ω, C = 0.5*10^-6∠90° â„§. Find the shunt reactor required for compensating ferranti effect?

 1500 Ω
 3000 Ω
 500 Ω
 2000 Ω

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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

 0.25.
  0.83.
 0.44.
 1.3.

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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 lag
 0.6 lead
 0.6 lag
 0.8 lead

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Power Systems
The value of inductance used for compensation of arcing grounds is

 ω²C/3
 3ω²C
 1/3ω²C
 3/ω²C

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Power Systems
The charging current of a 400 kV line is more than that of a 220 kV line of the same length?

 False
 True
 either 1 or 2
None of these

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