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Electrical Technology - 2019-7-4

2019-07-04View Original

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To determine the full-scale error of a 3mA, class 2.5 ammeter, after applying the prescribed correction values, the error generated by the standard instrument used should not exceed 1/3 of the allowable error for the instrument under test; therefore, _____ is the most suitable choice. A. 10mA, Class 0.5 B. 20mA, Class 0.2 C. 5mA, Class 0.5 D. 20mA, Class 1 C

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