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Power Systems

Power Systems
India’s largest thermal power station is located at

 Neyveli.
 Kota.
 Chandrapur.
 Sarni.

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Power Systems
Bundled conductors in EHV transmission lines

 decrease inducatance
 increase inductance
 increase capacitance
 decrease capacitance

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Power Systems
A cable has inductance of 0.22 mH per km and capacitance of 0.202 µF per km. The surge impedance of the cable is

 52 Ω
 40 Ω
 33 Ω
 28 Ω

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Power Systems
Which of the following represents the transmission line positive sequence reactance

 Xs +2 Xm
 Xs - Xm
 Xm - Xs
 2Xs + Xm

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Power Systems
A three phase, 33 kV oil circuit breaker is rated 1200 A, 2000 MVA, 3 secs. The symmetrical breaking current is

 55 kA.
 45 kA.
 50 kA.
  35 kA.

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Power Systems
If a fault occurs on any feeder, the fault current is

  none of these.
  equal to unsectional bus bar.
  much higher than with unsectional bus bar.
  much lower than with unsectional bus bar.

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