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Power Systems

Power Systems
Which of the following relationships are not valid for short transmission lines

 A = D = 1
 B = C = Z
 Is = Ir
All of these

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Power Systems
If skin depth is more, then skin effect is

None of these
 less
 either 1 or 2
 more

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Power Systems
In which of the following configuration power transferability is higher?

 horizontal configuration
None of these
 same in both configuration
 triangular configuration

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Power Systems
A cable has inductance of 0.22 mH per km and capacitance of 0.202 µF per km. The surge impedance of the cable is

 40 Ω
 28 Ω
 52 Ω
 33 Ω

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Power Systems
A 200 MW capacity generator has a speed regulation of 4% for a frequency drop of 0.05 Hz. Find the power input supplied by the turbine for maintaining constant frequency?

 10 MW
 20 MW
 5 MW
 15 MW

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Power Systems
How to find the total number of strands (N) when number of layers (x) are given

 Total number of strands N = 3x² + 3x + 1
 Total number of strands N = 3x² - 3x - 1
 Total number of strands N = 3x² + 3x - 1
 Total number of strands N = 3x² - 3x + 1

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