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Power Systems

Power Systems
If sparsity of a 5 bus transmission line is 0.4. Find the number of transmission lines?

 4
 6
 5
 3

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Power Systems
Maximum power transfer in a transmission line can be obtained by

 reducing reactance
None of these
 either 1 or 2
 increasing voltage level

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

 remains same
 decrease
None of these
 increase

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Power Systems
Efficiency of thermal power plant can be taken as

  efficiency of thermal cycle.
  product of efficiencies of all stages.
  turbine efficiency.
  generator efficiency.

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Power Systems
What will be the thermal efficiency of a 240 V, 1000 W electric kettle if it brings 2 liters of water at 15° C to boiling point 15 Minutes

  79.33 %.
  74.56 %.
 80.25 %.
 78.96 %.

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Power Systems
Apart from the skin effect the non uniformity of the current distribution is also caused by

All of these
 ferranti effect
 bundled conductors
 proximity effect

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