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Power Systems

Power Systems
If the inertia constant H = 10 MJ/MVA for a 50 MVA generator, the stored energy is

 50 MJ
 5 MJ
 500 MJ
 10 MJ

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Power Systems
The main advantage of the Decoupled Load Flow (DLF) as compared to the NR method is

 reduced memory requirements in storing the Jacobian elements
 accuracy is more
 number of iterations are less
All of these

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Power Systems
Advantages of per unit system is/are

 It has units for all quantities
 Need of transformation ratio
All of these
 No units for any quantity

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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?

 456 MW
 386 MW
 478 MW
 400 MW

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Power Systems
In triangular configuration, inductance and capacitance values are ------ and ------ respectively

 less, higher
 less, less
 higher, higher
 higher, less

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Power Systems
The corona loss on a particular system at 60 Hz is 1 kW/km per phase. What is the corona loss at 50 Hz in kW/km per phase?

 0.93
 1
 0.882
 1.13

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