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Power Systems

Power Systems
Reflector nuclear reactor are made of

  beryllium.
 cast iron.
 steel.
 boron.

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Power Systems
In what from the initial energy will be released for the 200 MeV per fission by a neutron in a slow thermal nuclear reactor

  kinetic energy of particles and electromagnetic radiation.
 electromagnetic radiations.
 heat energy.
 kinetic energy and sound energy.

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Power Systems
Three generators rated 100 MVA, 11 kV have an impedance of 0.15 pu each. If in the same plant, these generators are being replaced by a single equivalent generator, the effective impedance of equivalent generator will be

 0.05 pu
 0.45 pu
 0.15 pu
 0.25 pu

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Power Systems
Which of the following is/are the effects of corona

All of these
 charging current increases
 interference decreases
 power loss decreases

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Power Systems
Deaerative heating is done to

 heat the feed water.
 remove dissolved.
 heat the steam.
  remove dissolved gases in water.

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Power Systems
A load centre is at an equidistant from the two thermal generating stations G1 and G2. The fuel cost characteristics of the generating stations are given by F1 = a + bP1 + cP²1 F2 = a + b P2 + 2cP²2 Where P1 and P2 are the generation in MW of G1 and G2, respectively. For most economic generation to meet 300 MW of load, P1 and P2 respectively, are

 100, 200
 175, 125
 150, 150
 200, 100

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