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The literature in recent years has numerous references to methods of testing large induction machines at the factory to demonstrate conformance with contractual efficiency and loss statements. The authors do not intend to rehash, or even to shed more light upon, this particular aspect of the situation; their purpose is to demonstrate that there are means of measuring efficiency in the field to obtain information relative to the operating costs of equipment under actual load conditions.
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Becnel et al. (1987) studied this question.
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