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Power Systems

Power Systems
If sparsity of a 5 bus transmission line is 0.4. Find the number of transmission lines?

 5
 6
 4
 3

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Power Systems
A transmission line has surge impedance of 400 Ω, operating at Vs = Vr = 400 kV line is compensated with a shunt capacitance of 30%. Find the surge impedance loading with compensation?

 400 MW
 478 MW
 386 MW
 456 MW

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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?

 28.28 kV
 30.28 kV
 29.28 kV
 31.28 kV

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Power Systems
The value of diversity factor is

 1
 less than 1
 0
 greater than 1

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Power Systems
Cheapest plant in operation and maintenance is

  nuclear.
  hydroelectric.
  steam power.
  diesel power.

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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
 6 MJ/MVA
 2 MJ/MVA
 8 MJ/MVA

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