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Power Systems

Power Systems
Normally Z bus matrix is a

 sparse matrix
 unit matrix
 null matrix
 full matrix

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Power Systems
The power output of a nuclear power station is proportional to

 square of the rate at which fission reaction occurs.
 none of above.
  the rate at which fission reaction occurs.
 square root of the rate at which fission reaction occurs.

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Power Systems
An alternator having an induced emf of 1.6 pu is connected to an infinite bus of 1 pu. If the bus bar has reactance of 0.6 pu and alternator has reactance of 0.2 pu, what is the maximum power that can be transferred?

 6 pu
 5 pu
 2.67 pu
 2 pu

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Power Systems
The area under a flow duration curve represents

 total of units of energy available.
  total quantity of run-off during that period.
 maximum rate of run-off during the period.
 total power available.

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Power Systems
Which of the following statements is/are true regarding HVDC?

All of these
 HVDC can utilize earth for its return path
 Corona loss is very much reduced in the dc line
 There is no skin effect in dc line

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Power Systems
Which of the following will take least time in starting from cold condition to full load operation

 Nuclear power plant.
  Hydro electric power plant.
 Gas turbine plant.
 Thermal power plant.

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