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Power Systems

Power Systems
Mho relay is used for protection of

  short lines.
  long lines.
  none of these.
  medium lines.

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Power Systems
The power generated by two plants are; P1 = 50 MW, P2 = 40 MW. If the loss coefficients are B11 = 0.001, B22 = 0.0025 and B12 = -0.0005, then power loss will be

 5.5 MW
 4.5 MW
 8.5 MW
 6.5 MW

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Power Systems
Due to proximity effect, the increase in conductor resistance is not negligible in

All of these
 overhead transmission lines
 underground cable
 communication lines

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Power Systems
Under excited Synchronous phase modifier works as

 any of the above
 shunt capacitor
 series capacitor
 shunt reactor

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Power Systems
Find the value of a729, where "a" is the operator

 0
 1
 α²
 α

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Power Systems
Main bus bar protection scheme is /are

  none of these.
  both fault bus and differential protection.
  differential protection.
  fault bus protection.

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