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Power Systems

Power Systems
Making current is a------------ value?

 RMS
 peak value
 average
 any of the above

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Power Systems
For n bus power system size of Y bus matrix is

 (n-2)×(n-2)
 (n-1)×(n-2)
 (n-1)×(n-1)
 n×n

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Power Systems
The most suitable circuit breaker for short line fault without switching resistor is

  SF6 breaker.
 oil circuit breaker.
 air blast circuit breaker.
 none of these.

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Power Systems
Which of the following power planets is the least reliable

  Wind.
 Geothermal.
 Tidal.
 Solar.

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Power Systems
For a 500 Hz frequency excitation, a 100 km long power line will be modelled as

 medium transmission line
 long transmission line
 shunt capacitor
 any of the above

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Power Systems
The conductor carries more current on surface as compared to core. This is called as

All of these
 skin effect
 corona effect
 unsymmetrical fault

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