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Power Systems

Power Systems
Fault calculations using computer are usually done by

 Y bus method
None of these
 Z bus method
 either 1 or 2

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Power Systems
Isolator in sub station is open under ------------- condition?

 any of the above
 short circuit
 no load
 full load

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Power Systems
The ratio of reset to pick up current for an induction cup relay is approximately

 0.75.
 1.35.
  0.99.
 1.0.

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Power Systems
Bundled conductors are used for EHV transmission lines primarily for reducing the

 voltage drop across the line
 surge impedance of the line
 corona loss
 copper loss

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Power Systems
Equal area criteria is used for

 nether 1 nor 2
 relative stability of the system
 absolute stability of the system
 either 1 or 2

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Power Systems
Pump storage schemes are used to improve

  the plant capacity factor as well as the load factor of the power system.
 the load factor.
 the diversity factor.
 the power factor.

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