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A transformer has Np = 500, Ns = 50 and 2200 V on the primary. Vs is:
A22000 V
B2200 V
C440 V
D220 V
Answer & Solution
Correct answer: D. 220 V
Vs = Vp x Ns/Np = 2200 x 50/500 = 220 V, a step-down transformer.
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