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Power Systems

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

 1
 α
 α²
 0

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Power Systems
Zero voltage regulation is possible only for

 leading power factor
All of these
 lagging power factor
 unity power factor

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Power Systems
In a steam power plant, the feed water coming to the economizer is heated plant the feed water coming to the economizer is heated using

 HP steam.
 LP steam.
 direct heat in the furnace.
  flue gas.

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Power Systems
Percentage of carbon is highest in

  coal gas.
  lignite coal.
  anthracite coal.
  bituminous coal.

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Power Systems
A transmission line has a surge impedance of 400 Ω is connected with the cable having surge impedance of 40 Ω, a surge magnitude of 100 kV is travelling from the transmission line towards the cable. Find the incident current?

 100 A
 250 A
 200 A
 2500 A

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Power Systems
Bonding is done at the both ends of the cable to reduce the

None of these
 copper loss
 iron loss
 sheath loss

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