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Construction of PMMC Instruments by Kartavya Vij is a document available to read on EtoBox.
What is Construction of PMMC Instruments about?
The document describes the construction and working of a permanent magnet moving coil (PMMC) instrument. It discusses how the coil is wound and mounted on a former which pivots on jewel bearings in the magnetic field of a permanent magnet. The coil moves freely, controlled by springs. When current passes through the coil, it produces flux that exerts a torque on the coil proportional to the current. The instrument has a pointer and scale and is enclosed in a dustproof case. It works on DC principles with ef
- Author
- Kartavya Vij
- Language
- EN