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Verified answer
• transformator
Np ; Ns = 4 : 5
ip : is = 5 : 3
η = __?
Vp : Vs = Np : Ns
Vp : Vs = 4 : 5
efisiensi
η = Ps / Pp
η = Vs is / (Vp ip)
η = (Vs / Vp) × (is / ip)
η = (5/4) × (3/5)
η = ¾ = 75% ← jwb
Verified answer
Transformator.η = Ns Is / (Np Ip)
= 5(3) / [4(5)]
= 0,75 = 75%