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Power Systems

Power Systems
A CT is connected in ___________________ with the line.

  both A and B.
  not connected.
  series.
  across.

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Power Systems
A generating station has a maximum demand of 100 MW, a load factor of 60% and a plant capacity factor of 50%. The reserve capacity of the plant is

 10 MW
 15 MW
 80 MW
 20 MW

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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 Charging current under no load?

 0.512∠90° A/phase
 1.144∠90° A/phase
 0.144∠90° A/phase
 0.344∠90° A/phase

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Power Systems
In which of the following transmission lines capacitance effect is negligible?

 long transmission lines
 medium transmission lines
 both 1 and 3
 shoart transmission lines

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Power Systems
An over current relay, having a current setting of 125% connected to a supply circuit through a current transformer of ratio 500/5. The plug setting multiplier for a fault current of 5 kA is

 6
 2
 5
 8

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

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

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