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Power Systems

Power Systems
Mho relay is used for protection of

  none of these.
  long lines.
  short lines.
  medium lines.

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Power Systems
Where do compounding done in thermal power plants

  Ash handling plant.
  Generator.
  Turbine.
  Coal handling plant.

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Power Systems
Isolator in sub station is open under ------------- condition?

 short circuit
 any of the above
 full load
 no load

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Power Systems
Proximity effect is more in case of

 power cables
 same in both cases
 over head lines
None of these

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Power Systems
A 3 layer, total diameter of an ACSR conductor is 5 cm. Find the diameter of each strand?

 5 cm
 1 cm
 15 cm
 1.5 cm

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Power Systems
A load centre is at an equidistant from the two thermal generating stations G1 and G2. The fuel cost characteristics of the generating stations are given by F1 = a + bP1 + cP²1 F2 = a + b P2 + 2cP²2 Where P1 and P2 are the generation in MW of G1 and G2, respectively. For most economic generation to meet 300 MW of load, P1 and P2 respectively, are

 150, 150
 100, 200
 200, 100
 175, 125

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