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Power Systems

Power Systems
Normally Z bus matrix is a

 unit matrix
 sparse matrix
 null matrix
 full matrix

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Power Systems
Resistance switching in normally employed in

  air blast circuit breaker.
 all breakers.
 minimum oil breakers.
 bulk oil breakers.

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Power Systems
Which of the following plants has the maximum eapital cost

 Diesel plants.
  Nuclear plants.
 Steam plants.
 Hydro-plants.

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Power Systems
When series reactor is used in generating stations, the fault current magnitude is

 any of the above
 remains unaffected
 reduced
 increased

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Power Systems
What is the function of economiser in steam boilers

 cooling
 improving thermal efficiency
 collect ash particals
All of these

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Power Systems
The ratio of reset to pick up current for an induction cup relay is approximately

 1.35.
 1.0.
 0.75.
  0.99.

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