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Power Systems

Power Systems
Attenuation occurs due to

 conductance
 both 1 and 3
 inductance
 resistance

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Power Systems
Main bus bar protection scheme is /are

  differential protection.
  none of these.
  fault bus protection.
  both fault bus and differential protection.

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Power Systems
In load flow studies PV bus is treated as PQ bus when

 any of the above
 phase angle become high
 voltage at the bus become high
 reactive power goes beyond limit

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Power Systems
Counter poise is used for

 less surge impedance
 reduce losses
 more surge impedance
 proper discharging of lighting surges

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Power Systems
Which of the following statements is/are true? In case of parallel transmission lines

 fault current increases
 both 1 and 3
 stability increases
 fault current reduces

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Power Systems
Thermal shielding is provided to

 protected the operating personal from exposure to radiations.
All of these
 prevent the reactor wall from getting heated.
 absorb the fast neutron.

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