Power Systems
For accurate load flow calculations on large power systems, the best method is

 G-S method
 Decoupled method
All of these
 N-R method

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Power Systems
The modern trend in electric power generation

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

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