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Power Systems

Power Systems
For n bus power system size of Y bus matrix is

 n×n
 (n-2)×(n-2)
 (n-1)×(n-2)
 (n-1)×(n-1)

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Power Systems
Alternate formation and breakage of bubbles are called

  water hamming.
  cavitations.
All of these
  surgfication.

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

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

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Power Systems
Which of the following insulator is practically used for railway crossings?

 string insulator
All of these
 pin insulator
 strain insulator

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

 remains unaffected
None of these
 increase
 decrease

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Power Systems
Corona is accompanied by

 violet visible light
All of these
 hissing sound
 power loss and interference

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