What is the emf equation for transformer?

What is the emf equation for transformer?
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1 Answer

Answer :

Always maximum flux reaches from zero to maximum in one quarter of the cycle.
That is in … of second. That is equal to 1/200 second.
Average rate of change of flux = Qm / … f. = Qm * 4 * f.
 = 4 f Qm Weber / second.
As the coil has N turns the average emf induced in the coil = 4 f Qm N volts.
 But the rms. Value = average value * form factor.
∴ rms. Value of emf = 1.11 * 4 f Qm N volts.
 = 4.44 f Qm N volts.
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