Practice Advantages (5.1.5) - Introduction to Magnetism and Transformers
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Practice Questions

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Question 1 Easy

What is an auto-transformer?

💡 Hint: Think about how many windings it has.

Question 2 Easy

List one advantage of using an auto-transformer.

💡 Hint: Consider the materials used in its construction.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What is a key advantage of an auto-transformer?

Higher safety
Smaller size
More windings

💡 Hint: Think about the structure of the transformer.

Question 2

True or False: Auto-transformers provide electrical isolation between primary and secondary circuits.

True
False

💡 Hint: Consider how isolation protects circuits.

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Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

A factory requires a transformer that can step down from 480V to 240V for machinery. Analyze whether an auto-transformer or a two-winding transformer would be more suitable based on size and efficiency.

💡 Hint: Consider the trade-offs between efficiency and safety.

Challenge 2 Hard

During a motor starting application, an electric motor has high current demands. Discuss how using an auto-transformer can mitigate inrush currents.

💡 Hint: Think about the effects of starting voltages on current draw.

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