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A transformer steps 2200 V down to 220 V. The primary has 1000 turns. Secondary turns?
A500
B100
C10000
D10
Answer & Solution
Correct answer: B. 100
Ns/Np = Vs/Vp = 220/2200 = 0.1, so Ns = 0.1 x 1000 = 100 turns.
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