In a given transformer for a given applied voltage, losses which remain constant irrespective of load changes are__________?
Correct answer: A. hysteresis and eddy current losses
- A. hysteresis and eddy current losses
- B. friction and windage losses
- C. copper losses
- D. none of the above
Explanation
At fixed applied voltage and frequency, hysteresis and eddy-current losses depend mainly on the core flux and remain nearly constant as load changes. Copper loss varies with load current squared, so it is not constant.
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