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Power Systems

Power Systems
A 4 bus power system consists of 4 transmission lines, then find the sparsity of Y bus matrix?

 0.4
 0.75
 0.25
 0.5

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Power Systems
A gas turbine power plant is best suited for

 Emergency.
 Base load.
 Peak load.
 None of these.

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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. Find the load angle?

 60°
 45°
 30°
 35°

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Power Systems
Calorific value of solid fuel is expressed as

  Cal / gm.
  Cal / lt.
  KCal / gm.
  KCal / lt.

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Power Systems
Example of base load stations are

  hydro.
  both A and B.
  thermal.
  gas turbine.

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Power Systems
Lightning arresters are used to protect electrical equipment against

 power frequency of over voltages.
 over currents due to lightning stroke.
 direct strokes of lightning.
  over voltages due to indirect lightning stroke.

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