

Understanding Transformer Connections and Three-Phase Units
Flashcard
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Construction
•
Professional Development
•
Practice Problem
•
Hard
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6 questions
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1.
FLASHCARD QUESTION
Front
What is the primary connection type for phase-to-ground in transformers? Options: Delta, Wye, Star, Zigzag
Back
Wye
2.
FLASHCARD QUESTION
Front
Fill in the blank: The 'power' transformer is normally _______ because it supplies some of the three-phase load.
Back
smaller
3.
FLASHCARD QUESTION
Front
What is the configuration called when three-phase power cannot come from Open-Wye secondary? Options: Open-Delta, Closed-Delta, Star-Delta, Zigzag-Delta
Back
Open-Delta
4.
FLASHCARD QUESTION
Front
What should you not connect to the lighting load in a three-phase system? 120 volts, 208 volts, 240 volts, 480 volts
Back
208 volts
5.
FLASHCARD QUESTION
Front
Remove the _______ if your using a power pot
Back
Ground strap
6.
FLASHCARD QUESTION
Front
What is always needed to identify in the bank for a 120/240 three-phase secondary?
Back
Power leg
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