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Power Systems

Power Systems
The angular moment of 10 MVA generator is 0.2. Find the new value of angular moment for 20 MVA base?

 0.4 pu
 0.25 pu
 0.1 pu
 0.2 pu

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Power Systems
The function of moderator in a nuclear reactor is

All of these
 to absorb the excess.
 to increase the energy of the neutrons.
  to slow down the neutrons.

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Power Systems
Telecommunication lines are transposed to reduce the

 voltage level
 radio interference in communication lines
All of these
 efficiency

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Power Systems
Peterson coil is used in case of transmission line for

 compensation of arcing grounds
 improve power factor
 increase the voltage level
 reduce ferranti effect

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Power Systems
Thermal shielding is provided to

 protected the operating personal from exposure to radiations.
All of these
 prevent the reactor wall from getting heated.
 absorb the fast neutron.

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Power Systems
A transmission line has (2 + j4)Ω impedance, 100 MVA and base voltage is 10 KV. Find the per unit impedance value of transmission line?

 (2 + j4 ) pu
 (1 + j2 ) pu
 (0.5 + j1 ) pu
 (4 + j8 ) pu

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