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Transformers Level 2 Study Guide questions and answers
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5
February 2025
2024/2025
A+
What is an electrostatic shield or isolation transformer? Helps prevent common-mode noise
from transferring from the transformer's primary to the secondary
What is the main limitation of an autotransformer? Has a lower impedance than a two
winding transformer, which allows higher short circuit currents.
What is the formula for CO-Ratio? (HV-LV) / HV
Gnurse
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