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to check if any air voids are present in casting

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Q: Why partial discharge test in dry type transformer?
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Why the polarity of transformer is important?

a polarity test is a test which use to check the polarity of tranformer.the rision of this test to running the two or more transformer in parallel.like bettry situation or to fin the terminals


What type of discharge from the marines if you test positive for drugs?

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