Power Systems
The steam power plant efficiency can be improved by

 using large quantity of water.
  using high temperature and high pressure steam.
 decreasing the load on the plant.
 burning large amount of coal.

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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

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

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