Given,
Vp=1500V , Vs=230V
Ap=5cm2 , ρ=16 Acm-2
Np = 200 Nos
KVA =?, Ns =?, As =?
Sol:
We know,
VpVs=NpNs, Ns = 200 ×2301500= 30.66 ≈ 31 Nos (Ans)
Ip=Ap×ρ=5×16=80 Amp
Ip =KVAVp
KVA = 80 x 1.5 = 120 (Ans)
VpVs=IsIp, Is = 1500 ×80230= 521.73 ≈ 31 Amp
Is = As x ρ
As= 521.7316=32.60 cm2 (Ans)
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