PMMC Instrument kya hai And Working Principle of PMMC Instrument.
PMMC Instruments Definition: PMMC (Permanent Magnet Moving Coil) instruments ek electromechanical devices hote hain jo electrical current ya voltage measure karte hain. Ye instruments high accuracy, sensitivity aur linear scale ke liye jaane jaate hain. Inka construction ek moving coil hota hai jo ek permanent magnet ke magnetic field mein placed hota hai. Working Principle PMMC instruments ka working principle permanent magnet ke magnetic field aur ek current-carrying coil ke magnetic field ke interaction par based hota hai. Yahan ek step-by-step explanation hai: 1. Construction: Permanent Magnet: Ye ek constant magnetic field provide karta hai. Moving Coil: Ek rectangular coil of wire ko magnetic field mein rakha jata hai. Ye coil ek lightweight aluminum frame par wound hota hai. Spring: Coil ek pointer ke saath attached hota hai aur do control springs ke through permanent magnet ke poles ke beech suspended hota hai. Ye springs coil ki motion ko counteract karte hain. Poi...