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Power Systems

Power Systems
Condition for maximum voltage regulation

 tanφ = R/X
 tanφ = X/R
 cosφ = R/X
 cosφ = X/R

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Power Systems
Merze price current scheme protection is used in

  transformer.
  alternator.
  both A and B.
  bus bars.

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

 α
 1
 α²
 0

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Power Systems
For a 500 Hz frequency excitation, a 100 km long power line will be modelled as

 long transmission line
 medium transmission line
 any of the above
 shunt capacitor

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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
 0.98 pu
 1 pu
 0.098 pu

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Power Systems
The SWR on a lossless transmission line of the characteristic impedance 100 ohm is 3. The line is the terminated by

 A resistance of 100/3 ohm.
 A resistance of 100 ohm.
 A resistance of j100/3 ohm.
 A resistance of j300 ohm.

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