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Power Systems

Power Systems
If sparsity of a 5 bus transmission line is 0.4. Find the number of transmission lines?

 4
 5
 6
 3

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Power Systems
In a transmission line the insulators to be used at the dead end or sharp curves are

 pin type insulator
 suspension type
 strain type
 any of the above

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Power Systems
In which of the following given faults, all the sequence currents are equal?

 LLG
 LLL
 LG
 LL

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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
None of these
 medium transmission lines only

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Power Systems
If the diameter of the conductor is increased

 the resistance is increased
 the inductance is increased
 the inductance is decreased
 no change in inductance and resistance

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Power Systems
Where air circuit breakers are used?

  Up to 66 kV.
  Up to 12 kV.
  Up to 33 kV.
  Up to 11 kV.

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