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Power Systems

Power Systems
The most commonly used material for insulators of overhead lines is

 porcelain
 mica
 glass
 PVC

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Power Systems
An isolated synchronous generator with transient reactance equal to 0.1 pu on a 100 MVA base is connected to the high voltage bus through a step up transformer of reactance 0.1 pu on a 100 MVA base. The fault level at the bus is

 500 MVA
 100 MVA
 200 MVA
 400 MVA

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Power Systems
As the frequency of the system is increased, the charging MVAR

 remains unaffected
 decreases
None of these
 increases

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Power Systems
Generation of of one watt needs about ______________ fission per second

  3.1 × 1010.
 3.1 × 107.
 3.1 × 106.
 3.1.

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Power Systems
A synchronous generator is of 100 MVA have inertia constant of 20 MJ/MVA. Find the angular momentum in MJsec/electrical degrees

 0.22
 5
 2000
 0.4

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Power Systems
Ideal plant load cfactor is

 less than 1
 greater than 1
 0
 1

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