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In Figure, the primary will see an impedance of .......
  • a)
    20W
  • b)
    100W
  • c)
    1.25W
  • d)
    none of the above
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
In Figure, the primary will see an impedance of .......a)20Wb)100Wc)1....
Use impedance transformationWhen 4 ohm resistance transfered to primary it will become 4x(5/1)^2= 4x25=10p
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Community Answer
In Figure, the primary will see an impedance of .......a)20Wb)100Wc)1....
For transforming secondary impedance to primary primary impedance = turns ratio^2 × secondary impedance
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