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Power Systems

Power Systems
If the fault current is 2000 A, the relay setting is 50% and CT ratio is 400 : 5, then plug setting multiplier will be

 10.
 25.
 15.
 50.

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Power Systems
A 3-phase breaker is rated at 2000 MVA, 33 kV, its making current will be

 70 kVA.
  35 kVA.
  89.22 kVA.
 49 kVA.

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Power Systems
A diesel power station has fuel consumption of 0.28 Kg per kWh. The calorific value of fuel is being 10000 KCal / kg. Determine the overall efficiency

  30.26 %.
 40 %.
 40.85 %.
  30.7 %.

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Power Systems
In a long transmission line, if we increase the length of the line, the parameters A and B respectively

 increases and decreases
 decreases and decreases
 increases and increases
 decreases and increases

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Power Systems
What are the tests performed for oil-filled and gas-filled cables ?

 Impulse tests.
 Load cycle tests.
  All of these.
 Thermal stability test.

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

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

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