Practice Energy Losses In Transformers (7.3) - Electromagnetic Induction and Alternating

Practice: Energy Losses in Transformers

Lesson 7.3Electromagnetic Induction and Alternating

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9 questions

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6 sample questions

Question 1.
What are copper losses in transformers?
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Think of what happens when current flows through copper wires.
Question 2.
Define hysteresis loss.
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Consider the cyclical nature of magnetic fields.
3Question 3.
What is copper loss attributed to in transformers?
- Resistance of windings
- Eddy currents
- Hysteresis
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This is related to current flow and material properties.
4Question 4.
True or False: Hysteresis loss occurs due to the internal friction in the iron core.
- True
- False
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Consider the magnetization and demagnetization process.
Question 5.
A transformer has a copper resistance of 0.2 ohms and carries a primary current of 20 A. Calculate the copper loss and discuss its implications on overall efficiency.
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Use the loss formula to get the calculated loss and think about how that affects total power needed.
Question 6.
Discuss how transforming the core material from iron to an iron-silicon alloy could reduce hysteresis losses in a practical transformer application.
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Think about the properties of materials and friction in cycles.

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