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Power Systems

Power Systems
Breaking current is a ------------------ value?

 RMS
 average
 maximum
 any of the above

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Power Systems
Surge impedance loading of a line is increased by which of the following compensation methods?

 shunt capacitor
 both 1 and 2
 shunt reactor
 series capacitor

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Power Systems
Which of the following decides the insulation level of 400 kV, EHV line?

 lighting voltage
 switching over voltage
 radio interference
 skin effect

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Power Systems
A steam power generation has an overall efficiency of 20 %. 0.6 Kg of coal is burnt per kWh of electrical energy generated. Calculated the calorific value of fuel

 7268.45 KCal / Kg.
 7562 KCal / Kg.
  7166.67 KCal / Kg.
 7000 KCal / Kg.

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Power Systems
A string type insulator has three units with self capacitance C and ground capacitance of 0.2 C having a string efficiency of

 76%
 82%
 80%
 78%

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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

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

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