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Power Systems

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

 both 1 and 2
 conductance
 capacitance
 inductance

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Power Systems
The voltage regulation of a line at full load 0.8 power factor is 11. A long transmission line under no load conditions, for a good voltage profile needs

 shunt capacitor at receiving end
 shunt reactor at receiving end
All of these
 shunt resistance at receiving end

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Power Systems
If transmission line parameters A and B are 0.9∠0° and 200∠90° respectively. Find the shunt reactor required to compensate the ferranti effect?

 750 Ω
 2000 Ω
 1500 Ω
 3000 Ω

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Power Systems
Sum of the elements of row i equal to shunt admittances connected to bus i. If this summation is zero, indicates there is no

 mutual coupling
 shunt admittance
 both 1 and 2
None of these

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Power Systems
A thermal protection switch is used to provide protection against

 short circuit.
 over voltage.
 temperature.
  overload.

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Power Systems
The use of high speed circuit breakers

 increased the short circuit current.
  improves system stability.
 decrease system stability.
 reduces the short circuit current.

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