Which of the following is not a routine test on transformers ?
Correct answer: C. Radio interference test
- A. Core insulation voltage test
- B. Impedance test
- C. Radio interference test
- D. Polarity test
Explanation
Radio interference testing is generally a special test performed when specified, not part of the standard routine tests applied to every transformer. Impedance, polarity, and core insulation checks are commonly included among routine or production tests.
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