If the primary winding of a particular...

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Question 1 of 205eccefa4bacbc34ba4d4811d

If the primary winding of a particular voltage transformer rated for a given AC input voltage is mistakenly connected to a comparable steady DC input voltage with similar source impedance, selfinductance and mutual inductance are not possible. As a result, what part of the transformer will result in current overload?

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🔍 Key Concepts

• AC vs DC in transformers and why transformers only work properly with alternating current • What self-inductance and mutual inductance do to limit current in the windings when AC is applied • Which transformer component is directly connected to the power source and carries the input current

💭 Think About

• Think about what happens to the inductive reactance when you apply steady DC instead of AC to a coil—does it oppose current or drop to almost nothing? • When inductive effects disappear, which part of the transformer is then limited mainly by its copper resistance? • Which of the listed parts actually has turns of wire sized for a certain current, and what happens if that current becomes much larger than designed?

✅ Before You Answer

• Identify which winding is physically connected to the supply under normal operation • Consider which part would heat up from excessive current rather than from magnetic effects • Eliminate parts that do not normally carry the full input current from the source

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