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Power Systems

Power Systems
Phase shift occurs due to which of the following components?

 capacitance
 inductance
 conductance
 both 1 and 2

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Power Systems
For load flow studies, What are the quantities specified at load bus are

 P and Q
 δ and Q
 P and V
 V and δ

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Power Systems
A pin type insulator has 100 kV puncture voltage. If 10 kV flash over voltage occurred in a transmission line, then find the safety factor of insulator?

 10
 0.001
 1000
 0.1

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

 4
 6
 5
 3

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Power Systems
Reflection coefficient of voltage is Rv

 (Zs - Zl)/(Zs + Zl)
 (Zl - Zs)/(Zs + Zl)
 2Zl/(Zs + Zl)
 2Zs/(Zs + Zl)

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Power Systems
Breaking current is a ------------------ value?

 average
 RMS
 any of the above
 maximum

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