Physics · Electrical Measuring Instruments
To measure a voltage represented by v(t) = 10 + 20 sin(ωt), which of the following instruments CANNOT be used?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Moving Iron instrument
- 2Electrostatic type instrument
- 3Thermocouple instrument
- 4Permanent Magnet Moving Coil (PMMC) instrument✓
Correct answer
Permanent Magnet Moving Coil (PMMC) instrument
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