Power Systems
Under over excitation synchronous phase modifier works as

 series capacitor
 shunt reactor
 any of the above
 shunt capacitor

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Power Systems
In boiler water reactor (BWR)

 there is danger of radioactive contamination of steam.
 the feed water acts both coolant and a moderator.
  all of above.
 enriched uranium is used as fuel.

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Power Systems
The skin effect shows that

 current density is lower at the surface of the condutor
 current density is more at the surface of the condutor
 the distribution of AC current is uniform through the cross section of the conductor
 current density is more at the centre of the condutor

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