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POWER SYSTEMS

Power Systems
The rating of fuse wire is always expressed in

  ampere-hours.
  ampere-volts.
  amperes.
  kWh.

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Power Systems
Lightning arresters are used for

 protection of equipment from short circuits
All of these
 protection of equipment from external lightning
 protection of equipment from open circuits

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Power Systems
Lightning arresters are made up of which material?

 silicon oxide
 copper
 any of the above
 silver

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

All of these
 auto transformer
 distribution transformer
 capacitor voltage transformer

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Power Systems
Which device is used for protection of equipment from from damage caused by overload or short circuit?

 circuit breaker
 lightning arrester
 CVT
 current transformer

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