Power Systems
Which of the following statements is/are true? The elements of each row of a Y bus matrix for load flow studies in power system add up to zero

 if both 2 and 3 are satisfied
 always
 if the mutual couplings between transmission lines are absent
 if the shunt admittances at the buses are ignored

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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.
  none of above.
 to have large size thermal plant located near coal fields.
 to have large size thermal plants near load centre.

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