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Power Systems

Power Systems
Reflector nuclear reactor are made of

 steel.
  beryllium.
 cast iron.
 boron.

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Power Systems
A network containing 50 buses in which 10 are the voltage control buses, 6 are the generator buses. Find the size of the Jacobian matrix?

 84*84
 83*83
 33*33
 34*34

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Power Systems
In a Gauss Seidel load flow method, the number of iterations may be reduced if the correction in voltage at each bus is multiplied by

 Gauss constant
 Blocking factor
 Lagrange multiplier
 Acceleration factor

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Power Systems
The use of high speed circuit breakers

 decrease system stability.
 reduces the short circuit current.
 increased the short circuit current.
  improves system stability.

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Power Systems
Due to proximity effect, the increase in conductor resistance is not negligible in

 underground cable
 overhead transmission lines
 communication lines
All of these

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Power Systems
A generated station has a maximum demand of 30 MW, a load factor of 60% and a plant capacity factor of 50%. The reserve capacity of the plant is

 5 MW
 6 MW
 12 MW
 10 MW

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