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- Q615 - Electrical, Electronic, & Control Engineering
23. An internal resistance is placed in series with the meter movement of which of the following instruments?
A DC voltmeter incorporates a series resistor to limit current through the movement when measuring voltage. This contrasts with DC ammeters, which use a parallel shunt resistor, and AC instruments, which employ rectifiers or transformers. Therefore, the defining characteristic of a DC voltmeter is the inclusion of an internal resistance in series with the meter movement.
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