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Notes (Sinusoidal supply (ia =i max. cosθs ib = imax.sin θs, θs =0 …
Notes
Sinusoidal supply
ia =i max. cosθs ib = imax.sin θs
θs =0 ia=max ib =0
θs=90 ia =0 ib =max
θs =30 ia=√3/2 imax ib=1/2 imax
iR= imax =√ia^2+ib^2
θs =θm*(2p/2)
θs = Supply angle or Electrical angle
θm = Mechanical angle
2p: no of poles
2p=2 θs=θm
e = B .l .v
e; indused Emf
B;Density Flux
V;velocity
e=B .l.v
e α B. n
φ=φmax .sin wt
Emax =N.φ. w
W= 2π f
e αφ f
φ = e/f
n =120F/2p
F:frequency , 2p :no of poles