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Power Systems

Power Systems
India’s largest thermal power station is located at

 Sarni.
 Kota.
 Chandrapur.
 Neyveli.

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Power Systems
The unit protection scheme provides

 remote protection.
 back up protection.
  primary protection.
 simultaneous protection.

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Power Systems
In relay coil which is used?

  Current transformer.
  Power transformer.
  Instrument transformer.
  Potential transformer.

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Power Systems
Mho relays are used for the protection of which of the following lines?

 long transmission lines only
 short transmission lines only
 medium transmission lines only
None of these

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Power Systems
Which of the following matrix is used for load flow studies?

 Y bus matrix
 Unit matrix
 null matrix
 Z bus matrix

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Power Systems
An over current relay, having a current setting of 125% connected to a supply circuit through a current transformer of ratio 500/5. The plug setting multiplier for a fault current of 5 kA is

 2
 5
 8
 6

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