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Understanding Three-Phase Transformers Quiz

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1. What is the primary function of a three-phase transformer in a power transmission system?

2. Which type of three-phase transformer connection is often used in high-voltage transmission systems because it can endure large voltage differences between its coils?

3. Which configuration of three-phase transformer is considered to be the most economical for small high-voltage transformers?

4. What happens when there is unbalanced loading in a three-phase transformer?

5. Which type of three-phase transformer connection provides a neutral point for grounding purposes?

6. How does the efficiency of a three-phase transformer compare with a single-phase transformer?

7. What is the role of a three-phase transformer in a delta-delta configuration?

8. What is the main disadvantage of a three-phase transformer as compared with three single-phase transformers?

9. What is the purpose of the neutral wire in a Y-connected three-phase transformer?

10. What happens if a single phase of a three-phase transformer fails to function correctly?