A transformer has 200 turns on the primary coil and 1000 turns on the secondary. The primary voltage is 230 V. What is the secondary voltage?
Answer and explanation
Correct answer: B. 1150 V
- Step 1: Vs/Vp = Ns/Np. Step 2. Vs = 230 × (1000 ÷ 200) = 1150 V. Answer: 1150 V. Why not the others: 46 V is what you get if you invert the turns ratio. 235 V is what you get if you add instead of multiply. 11500 V is what you get if you misplace a power of ten.
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