How are power transformers rated?

Question 1 of 2707066636eed28f7522a1c51d8e3

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Question 1 of 27070

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How are power transformers rated?

🔍 Key Concepts

• Difference between power (kW) and apparent power (kVA) • How transformers handle voltage and current regardless of power factor • Why transformer nameplates list a value that does NOT depend on load power factor

💭 Think About

• Is a transformer concerned with real power delivered to the load, or with voltage and current it must safely carry? • Which unit describes apparent power (volts × amps) instead of real power? • Look at the choice formats: which one is a standard electrical engineering unit you’d actually see on a transformer nameplate?

✅ Before You Answer

• Identify which option represents apparent power, not real power • Eliminate any options that are not standard electrical units used in practice • Ask yourself: which unit would stay the same even if the power factor of the load changes?