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Transformers
What is the coefficient of coupling for a transformer in which 4% of the total flux generated in the primary does not pass through the secondary?
0.4
4
9.6
0.96
Correct Answer:
0.96
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Transformers
A transformer consists of two or more cores that are electrically coupled on a common core.
An autotransformer is one in which the primary and secondary are automatically coupled.
A reflective load is a load as it appears to the source in the primary of a transformer.
A transformer responds only to dc.
A transformer changes ac to dc.
A step-up transformer steps up power.
The primary is the winding connected to the source, and the secondary is the winding connected to the load.
A center tap (CT) is a connection at the midpoint of the secondary winding of a transformer.
If the voltage is stepped up, the current is stepped down, and vice versa.
A step-down transformer has a turns ratio less than 1.
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