The value of flux involved m the e m f equation...

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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

D. instantaneous value

Answer: Option C

Solution (By Examveda Team)

The value of flux involved in the e.m.f. equation of a transformer is

Given by:
E = 4.44 * f * N * Φmax

where:
E is the induced e.m.f.
f is the frequency of the AC supply
N is the number of turns in the coil
Φmax is the maximum flux

The 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.

This Question Belongs to Electrical Engineering >> Transformers

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Comments (4)

Hussam Majeed:

1 year ago

When transformers with different percentage impedances are connected in parallel, they will not share the load in proportion to their kVA ratings. The transformer with the lower impedance will take a larger share of the load, and the one with the higher impedance will take a smaller share, leading to inefficient operation and potential overloading of one transformer.
Mohanned Fayez:

4 years ago

Explain plz
Venkatesh Jinikuntla:

5 years ago

Please explain this question
Shalinee Badoni:

5 years ago

It is maximum flux because the formula for emf equation is √2 πf*flux maximum*no of turns