Q16
The value of flux involved m the e.m.f. equation of a transformer is
A.
average value
B.
r.m.s. value
C.
maximum value
AnswerD.
instantaneous value
Answer: Option C
Solution
Answer: Option C
Solution:
The value of flux involved in the e.m.f. equation of a transformer isGiven by:
E = 4.44 * f * N * Φmaxwhere:
E is the induced e.m.f.f is the frequency of the AC supplyN is the number of turns in the coilΦmax is the maximum fluxThe e.m.f. equation of a transformer involves the maximum value of the magnetic flux (Φmax) because the equation is derived based on the peak value of the sinusoidal flux waveform.
Therefore, the correct answer is Option C: maximum value.