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Power Systems

Power Systems
A 3-phase breaker is rated at 2000 MVA, 33 kV, its making current will be

  35 kVA.
 70 kVA.
 49 kVA.
  89.22 kVA.

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Power Systems
Find the number of strands of ACSR conductor for 3 layer transmission line?

 19
 1
 7
 29

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Power Systems
Which of the following statements is/are true? Corona is reduced by

 increasing the radius of the conductor
 increasing the distance between the conductor
All of these
 decreasing the supply frequency

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Power Systems
Which of the following produces the radio interference in communication lines?

 electro static induction
 electro magnetic induction
 both 1 and 2
None of these

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Power Systems
Units of incremental cost is

 Rs/hr
 Rs/MWhr
 RsMW/hr
 MWhr/Rs

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Power Systems
Aluminium is now most commonly employed conductor material in transmission lines than copper because

 costlier
 it is cheaper and lighter
 it is more conductive
 its tensile strength is more

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