Answer / reshi

Emf in primary
E1=4.44fN1BmA

Emf induced in the secondary
E2=4.44fN2BmA


Bm -flux density in weber /sq m (Tesla)
A-net cross sectional area of core in sq m.

Answer / loki

E=4.44*A*B*N*f
where A=area of cross section of core
B=fux density
N=no.of turns
f=operating frequency

Answer / n.santhosh

E=4.44*N*f*Bm*Area

Answer / anil bhatia

sorry my earliar reply there was a mistake ignore it .
new reply
Emf in primary
E1=4.44fN1Bm

Emf in secondary
E2=4.44fN2Bm
where Bm is maximum /peak flux density, in weber /sq m
(Tesla)


under no load condition E!=v1, E2=v2 , assuming negligible
Magnetizing current.

equation is v=4.44FNBm
or say V/N= 4.44FBm
1) Thus reduction in frequency F causes the increase in
flux and their by flux density.
2) Thus increase in volt/turn , V/N causes increase in the
flux and thereby flux density.

Answer / anil bhatia

Emf in primary
E1=4.44fN1Bm

Emf in secondary
E2=4.44fN2Bm
where Bm is maximum /peak flux density, in weber /sq m
(Tesla)


under no load condition E!=v1, E@=v2 , asuming neglesible
magnetising current.

equation is v=4.44NBm

Answer / malvik

e= 4.44 f Bm Ai Kw Tph
wer Kw is winding factor
Tph is turn per phase
Bm is maxflux density
Ai area of iron part

Answer / will

emf=1.44f(fiM)

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