Recent questions and answers in Electrical Measurement & Instrumentation

Explain Permanent Magnet Moving Coil (PMMC) instrument.
Answer : This diagram shows the internal parts of a Permanent Magnet Moving Coil (PMMC) Instrument, commonly used in analog ammeters and voltmeters to measure current and voltage. Here's a simple explanation of each labeled ... The pointer shows the reading on the scale. ...

Explain the working principle of a Moving Iron (MI) instrument. How does it differ from a Moving Coil (MC) instrument in terms of construction, operation, and applications?
Answer : ### Working Principle of a Moving Iron (MI) Instrument: A **Moving Iron (MI)** instrument operates on the principle that a current-carrying conductor placed in a magnetic field experiences a ... Coil** instruments are more precise, with a linear response, but typically limited to DC measurements....