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Power Systems

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

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

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Power Systems
Transmission line parameters of the short transmission line are

 1,0,Y,1
 1,Z,Y,1
 1,Z,0,1
 Z,0,Y,1

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Power Systems
A 50 Hz, 17.32 kV generator is connected to a power system. The system reactance and capacitance per phase are 10 mH and 0.2 mF respectively. What is the maximum voltage across the contacts of the circuit breaker at an instant when it passes through zero?

 30.28 kV
 29.28 kV
 31.28 kV
 28.28 kV

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Power Systems
The positive sequence reactance will be equal to negative sequence if the equipment is

  none of these.
  transformer and transmission lines.
  motor.
  generator.

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Power Systems
For 800 MJ stored energy in the rotor at synchronous speed, what is the inertia constant H for a 50 Hz, four pole turbo generator rated 100 MVA, 11 kV?

 4 MJ/MVA
 8 MJ/MVA
 6 MJ/MVA
 2 MJ/MVA

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Power Systems
For a 500 Hz frequency excitation, a 100 km long power line will be modelled as

 shunt capacitor
 long transmission line
 any of the above
 medium transmission line

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