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Power Systems

Power Systems
In which of the following given faults, all the sequence currents are equal?

 LL
 LLG
 LLL
 LG

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Power Systems
A 3-phase transmission line has its conductors at the corners of an equilateral triangle with side 3m. The diameter of each conductor is 1.63 cm. The inductance of the line per phase per km is

 1.232 mH
 1.043 mH
 1.093 mH
 1.182 mH

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Power Systems
Highest pressure generating pump inside the thermal plant is

 boiler feed pump
 high pressure heater
All of these
 low pressure heater

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Power Systems
Which of the following method is used for changing power factor from leading to lagging

 series capacitor
 shunt reactor
 shunt capacitor
 any of the above

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Power Systems
If the penalty factor of a plant is unity, its incremental transmission loss is

 0
None of these
 1
 -1

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Power Systems
The fact that current density is higher at the surface when compared to centre is known as

 carona
All of these
 proximity effect
 skin effect

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