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Power Systems

Power Systems
Switchgear equipment include

  all of these.
  switches.
  fuses.
  relays and CB.

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Power Systems
For some given transmission line the expression for voltage regulation is given by (Vs - Vr)/Vr *100%. Hence,

 this expression is true for any line
 this may either be a medium line or short line
 this must be a short line
None of these

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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

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

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Power Systems
The characteristic impedance of a transmission line is

 Independent of its length.
 Directly proportional to square root of its length.
 Directly proportional to its length.
 Inversely proportional to square root of its length.

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Power Systems
Deflectors are provided in

 Francis turbine.
 Kaplan turbine.
  Pelton wheel.
 propeller turbine.

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Power Systems
On what factors does the selection of a water turbine depend

 Speed.
 Working head.
  All of above.
 Nature of load.

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