Power Systems
Installation of capacitors at suitable locations and of optimum size in a distribution system results in

 improved voltage regulation
All of these
 reduction in distribution power loss
 reduction of KVA rating of distribution transformers

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Power Systems
The skin effect shows that

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

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Power Systems
Critical mass is

  minimum mass of fissionable material required to sustain chain reaction.
 maximum mass of fissionable material required to sustain a chain reaction.
 a mass of fissionable material required to stop a chain reaction.
 none of these.

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