Course Assessment — Comprehensive Guide to Three-Phase Transformers
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Question 1 of 10
1. Question
What is the Sumpner test used for?
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Question 2 of 10
2. Question
What happens if the primary and secondary are connected in a star configuration but the correct dot polarity is not followed?
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Question 3 of 10
3. Question
What are the characteristics of delta connections? (Select the 2 correct answers)
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Question 4 of 10
4. Question
What is transformed into another balanced three phase voltage in the secondary?
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Question 5 of 10
5. Question
What is the phase displacement in Start-Delta connections?
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Question 6 of 10
6. Question
What determines the line to line voltage and phase shift of the secondary voltage with respect to the primary voltage?
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Question 7 of 10
7. Question
What is required for each phase to implement a zigzag connection in transformers?
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Question 8 of 10
8. Question
What is the nature of the BH curve of the material?
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Question 9 of 10
9. Question
What issues can arise due to third harmonic flux in three-phase transformers? (Select the 3 correct answers)
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Question 10 of 10
10. Question
What is the shape of the BH curve in transformers?