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POWER SYSTEMS

Power Systems
The arc voltage produced in an AC circuit breaker is always

 leading the arc current by 90°.
  in phase with the arc current.
 in phase opposition with the arc current.
 lagging the arc current by 90°.

ANSWER DOWNLOAD EXAMIANS APP

Power Systems
Which of the following circuit breakers produce least arc energy?

 Plain oil CB.
 Minimum oil CB.
  Air blast CB.
 Air break CB.

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Power Systems
A power station supplies the peak load of 50 MW, 40 MW and 70 MW to three localities. The annual load factor is 0.50 p.u. and the diversity factor of the load at the station is 1.55 the maximum demand on the station and average load respectively will be

 57.5 MW.
  51.61 MW.
 53 MW.
 52 MW.

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Power Systems
A generating station has a maximum demand of 50 MW a load factor of 60 %, a plant capacity factor of 45 % and if the plant while running as per schedule were fully loaded. The daily energy produced will be

 710 MW.
 730 MW.
  720 MW.
 740 MW.

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Power Systems
When bundle conductor are used in place of single conductor the effective inductance and capacitance will respectively

 increase and remain unaffected.
 decrease and remain unaffected.
 increase and decrease.
  decrease and increase.

ANSWER DOWNLOAD EXAMIANS APP
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