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Power Systems

Power Systems
For 66 kV lines the number of insulator discs of each 11 kV used are

 6
 5
 12
 3

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

  moderator.
 coolant.
 electrode.
 fuel.

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Power Systems
A generator has a rating of 10 MVA, 5 kV has a reactance of 0.02 pu. Find the reactance at a new base values of 50 MVA, 10 kV?

 0.25
 0.02
 0.05
 0.025

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Power Systems
Sum of the elements of row i equal to shunt admittances connected to bus i. If this summation is zero, indicates there is no

 shunt admittance
 mutual coupling
 both 1 and 2
None of these

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Power Systems
The characteristic impedance of a transmission on line is

 Directly proportional to square root of its length.
 Inversely proportional to its length.
 Directly proportional to its length.
  Independent of its length.

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Power Systems
Asynchronous tie line is a

 AC transmission line
 either 1 or 2
None of these
 DC transmission line

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