Which of the following devices should be used for accurate measurement of low D.C. voltage ?
A. Small range moving coil voltmeter
B. D.C. potentiometer
C. Small range thermocouple voltmeter
D. None of the above
Answer:B
Which of the following devices should be used for accurate measurement of low D.C. voltage ?
A. Small range moving coil voltmeter B. D.C. potentiometer C. Small range thermocouple voltmeter D. None of the above