Power Systems
If in a line, resistance and reactance are found to be equal and regulation is zero, then load will have

 0.707 leading power factor
 zero power factor
 0.707 lagging power factor
 unity power factor

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Power Systems
The modern trend in electric power generation

 to have large number of small size thermal plants located at different places.
 to have large size thermal plants near load centre.
  none of above.
 to have large size thermal plant located near coal fields.

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