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Power Systems

Power Systems
Attenuation occurs due to

 resistance
 conductance
 both 1 and 3
 inductance

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Power Systems
In which of the following transmission lines capacitance effect is negligible?

 shoart transmission lines
 both 1 and 3
 medium transmission lines
 long transmission lines

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Power Systems
In a 3-phase, 5 kV, 5 MVA system, what is the base impedance?

 500 ohms
 50 ohms
 0.5 ohm
 5 ohms

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Power Systems
Critical visual voltage is the voltage at which

 corona is visible with blue or violet colour
None of these
 both 1 and 2
 corona is just initiated

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Power Systems
What will be the thermal efficiency of a 240 V, 1000 W electric kettle if it brings 2 liters of water at 15° C to boiling point 15 Minutes

 78.96 %.
 80.25 %.
  79.33 %.
  74.56 %.

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

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

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