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Power Systems

Power Systems
Rating of fuse wire is expressed in

  Mho.
  Ampere.
  Watts.
 ÃŽÂ©.

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Power Systems
Load frequency control is achieved by properly matching the individual machines

  turbine inputs.
  reactive powers.
  generator ratings.
  generated voltages.

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Power Systems
Telecommunication lines are transposed to reduce the

 efficiency
All of these
 radio interference in communication lines
 voltage level

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Power Systems
Find the characteristic impedance of a transmission line, if impedance is 16 Ω and admittance is 0.1 mâ„§?

 160 Ω
 400 Ω
 320 Ω
 200 Ω

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Power Systems
A buchholz relay is used for

 protection of a transformer against all internal faults
 both 1 and 2
 nether 1 nor 2
 protection of a transformer against all external faults

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Power Systems
A string insulator has 4 units. The voltage across the bottom most unit is 33.33% of total voltage. Its string efficiency is

 75%
 66.66%
 33.33%
 25%

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