Open circuit test on transformers is conducted to determine____________?
Correct answer: C. core losses
- A. hysteresis losses
- B. copper losses
- C. core losses
- D. eddy current losses
Explanation
With the secondary open, the input power is almost entirely the iron or core loss, made up mainly of hysteresis and eddy-current losses. Copper loss is very small because the no-load current is low.
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