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Power Systems

Power Systems
Which of the following materials is/are used as moderators?

All of these
 graphite
 heavy water
 beryllium

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Power Systems
For distortion less line which of following relation are true

 None of above.
 R/L = G/C.
 R = O, G = O.
 R/L = C/G.

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Power Systems
The presence of earth in case of overhead lines

 decrease inducatance
 increase inductance
 decrease capacitance
 increase capacitance

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Power Systems
Counter poise is used for

 reduce losses
 proper discharging of lighting surges
 more surge impedance
 less surge impedance

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Power Systems
The rating of fuse wire is always expressed in

  amperes.
  ampere-hours.
  kWh.
  ampere-volts.

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Power Systems
Surge impedance loading can be increased by

 increasing of capacitance value
 both 1 and 2
 increasing of voltage level
 increasing of inductance value

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