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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 thermal power plants, pressure in the working fluid cycle is developed by

 turbine.
 condenser.
  feed water pump.
 superheater.

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Power Systems
The characteristic impedance of a transmission on line is

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

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Power Systems
Steady state stability of a power system is improved by

All of these
 using double circuit line instead of single circuit line
 single pole switching
 decreasing generator inertia

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Power Systems
In a three-phase system, when the loads are perfectly balanced, the neutral current is

  zero.
  one - third of minimum.
  one - third of maximum.
  two - thirds of maximum.

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Power Systems
Peterson coil is used in case of transmission line for

 increase the voltage level
 reduce ferranti effect
 improve power factor
 compensation of arcing grounds

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