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Power Systems

Power Systems
If all the sequence voltages at the fault point in a power system are equal, then the fault point is a

 LG
 LLL
 LL
 LLG

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Power Systems
Critical visual voltage is the voltage at which

 corona is visible with blue or violet colour
None of these
 both 1 and 2
 corona is just initiated

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Power Systems
The steam power plant efficiency can be improved by

 using large quantity of water.
  using high temperature and high pressure steam.
 burning large amount of coal.
 decreasing the load on the plant.

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Power Systems
MCB stands for

  maximum capacity breaker.
  miniature circuit breaker.
  molded circuit breaker.
  minimum capacity breaker.

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Power Systems
Pipes carrying steam are generally of

 cast iron.
  steel.
 cobalt.
 aluminium.

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Power Systems
Ferranti effect can be compensated by which of the following

 shunt capacitor
 shunt reactor
 series capacitor
 both 1 and 2

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