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The true r.m.s. voltmeter employs two thermocouples in order to:
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- prevent drift
- increase the accuracy
- increase the sensitivity
- cancel out the nonlinear effects of first thermocouple
- prevent drift
Correct Option: D
The true r.m.s. voltmeters employs two thermocouples in order to cancel out the non-linear effects of first thermocouple.
