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Power Systems

Power Systems
Graphite is use din nuclear plant as a / an

 coolant.
 electrode.
  moderator.
 fuel.

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Power Systems
Consider a long, two wire line composed of solid round conductors. The radius of both conductors is 0.25 cm and distance between their centers is 100 cm. If this distance is doubled, then the inductance per unit length.

 Decrease but does not halves.
  Increase but does not doubled.
 Halves.
 Doubled.

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Power Systems
For a fixed value of complex power flow in a transmission line having a sending end voltage V, the real power loss will be proportional to

 V2.
 1 / V.
  1 / V2.
 V.

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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
 10 MW
 6 MW
 12 MW

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Power Systems
Specified quantities of slack bus are

 P and Q
 V and δ
 P and V
 P and δ

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Power Systems
Find the number of insulator discs required in string insulator, if operating voltage is 220 kV and maximum voltage of each disc is 11 kV?

 20
 13
 10
 21

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