Question
Download Solution PDFWhich expression is right about EMF equation of a transformer if f = frequency, N1 = number of turns in primary, ϕm = maximum flux in a core, A = iron area, Bm = maximum flux density?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFEMF equation of a transformer
The EMF equation on the primary side of a transformer is given by:
E1 = 4.44 f N1 ϕm ....... (i)
The EMF equation on the secondary side of a transformer is given by:
E2 = 4.44 f N2 ϕm ....... (ii)
where, E = Induced EMF
f = Frequency
ϕm = Maximum flux
N1 = No. of turn on the primary side
N2 = No. of turn on the secondary side
Dividing (i) by (ii), we get:
\({E_1\over E_2}={N_1\over N_2}\)
Last updated on May 29, 2025
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