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Power Systems

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

 average
 RMS
 any of the above
 maximum

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Power Systems
The Y bus matrix of a 100 bus interconnected system is 90% sparse. Then find the number of non zero elements in the Y bus matrix?

 1000
 10
 9000
 90

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Power Systems
Uses of diesel power stations

 standby plants.
  peak load plant.
All of these
  emergency plants.

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Power Systems
Which of following power plants normally operage at high speeds

  Thermal.
 Petrol engine.
 Hydro electric.
 Diesel engine.

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Power Systems
In nuclear chain fission reaction each neutron causing fission produces

 no new neutron.
 one new neutron.
  at least one new neutron.
 less than one new neutron.

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Power Systems
Which of the following transformer is used in sub station for operating a protective relay?

 capacitor voltage transformer
 distribution transformer
All of these
 auto transformer

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