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I have a transformer whose primary operates at 230V, 50Hz
for which the secondary voltage will be 12V, 50Hz. What
will be the secondary voltage if the primary is fed with
400V, 8KHZ Signal?

Answer Posted / raj(b.e.electrical)

e1/e2=e3/e4
230/12=400/e4
e4=400/19.16667
e4=20.869v
so ans is : 20.869v
freq remain same.

Is This Answer Correct ?    4 Yes 5 No



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