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Power Systems

Power Systems
When a transformer is loaded, the secondary terminal voltage gains. That means power factor is

  leading.
 lagging.
 unity.
 zero.

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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

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

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Power Systems
For harnessing low variable water heads, the suitable hydraulic turbine with reaction and adjustable vanes is

  Kaplan.
 Impeller.
 Pelton.
 Francis.

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Power Systems
Transmission line has a length of 300 km, operating at sending end voltage Vs = 1 pu, find the receiving end voltage(Vr) at no load?

 1.098 pu
 1 pu
 0.98 pu
 0.098 pu

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Power Systems
Characteristics of arc quenching medium is/are

 High thermal conductivity
All of these
 Non flammable
 High dielectric strength

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Power Systems
Counter poise is used for

 less surge impedance
 proper discharging of lighting surges
 reduce losses
 more surge impedance

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