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Power Systems

Power Systems
Percentage of carbon is highest in

  anthracite coal.
  coal gas.
  bituminous coal.
  lignite coal.

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Power Systems
Surge impedance loading can be increased by

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

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Power Systems
Which of following power plants will take long period in erection and installation

 Gas turbine.
 Nuclear.
 Hydro Power Plant
 Thermal.

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Power Systems
If sag in an overhead line increase, tension in the line

 increase
 remains same
None of these
 decrease

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Power Systems
Transmission lines are transposed to reduce

 interference with neighbouring communication lines
 proximity effect
 skin effect
 ferranti effect

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Power Systems
Find the value of a729, where "a" is the operator

 1
 α²
 α
 0

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