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Power Systems

Power Systems
Rating of fuse wire is expressed in

 ÃŽÂ©.
  Mho.
  Watts.
  Ampere.

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Power Systems
In a 400 kV power network, 360 kV is recorded at 400 kV bus. The reactive power absorbed by a shunt reactor for 50 MVAr, 400 kV connected at the bus is

 61.73 MVAr.
  40.5 MVAr.
 55.56 MVAr.
 45.0 MVAr.

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Power Systems
Which of the following represents the transmission or reflection coefficient of voltage Tv? (Zl = Surge impedance of load, Zs = Surge impedance of line)

 (Zl - Zs)/(Zs + Zl)
 2Zs/(Zs + Zl)
 2Zl/(Zs + Zl)
 (Zs - Zl)/(Zs + Zl)

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Power Systems
A transmission line has a reactance of 1 Pu is operating at Vs = Vr = 1 Pu. The generator is connected at source end which is delivering 0.5 Pu of active power and the transmission line is compensated with a series capacitance of 0.5 Pu. Find the load angle with series capacitance compensation ?

 10.5°
 35.5°
 14.5°
 29°

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Power Systems
Which of the following is/are base load plants?

 nuclear plants
All of these
 hydro plants
 thermal plants

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Power Systems
A 100 Km long transmission line is loaded at 110 kV. If the loss of line is 5 MW and the load is 150 VA the resistance of the line is

 4.65 Ω / phase.
  8.06 Ω / phase.
 2.26 Ω / phase.
 6.06 Ω / phase.

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