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Power Systems

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

 average
 peak value
 any of the above
 RMS

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Power Systems
Power transmission lines are transposed to reduce

 radio interference
 skin effect
 ferranti effect
 proximity effect

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Power Systems
If we increase the spacing between the phase conductors, the value of line inductance

 increase
None of these
 remains unaffected
 decrease

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Power Systems
For 66 kV lines the number of insulator discs of each 11 kV used are

 3
 6
 12
 5

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Power Systems
Rankine cycle efficiency of a steam power plant is of

  45 - 80 %.
  60 - 80 %.
  30 - 45 %.
  20 - 30 %.

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Power Systems
A 3-phase transmission line operating at Vs = 400 kV and has ABCD parameters A= D = 0.8∠0°, B = 100∠°90 Ω, C = 0.5*10^-6∠90° â„§. Find Charging current under no load?

 0.144∠90° A/phase
 0.512∠90° A/phase
 0.344∠90° A/phase
 1.144∠90° A/phase

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