Electrical Engineering · Transformers
Which 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?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1E = 4.44 f N1 φm✓
- 2E = 4.44 f N1 Bm
- 3E = 4.44 f N1 φmA
- 4E = 4 f N1 φmA
Correct answer
E = 4.44 f N1 φm
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