Electrodynamic or Dynamometer Type Instruments

Electrodynamic or Dynamometer Type Instruments Points : Electrodynamic or Dynamometer Type Instruments, Definition An electrodynamic or dynamometer type instrument is a type of moving-coil instrument in which the operating field is not only produced by a permanent magnet but by another fixed coil. This instrument can be used either as an ammeter or as a voltmeter but is generally used as a Wattmeter and varmeter. With some modification we can use it as power-factor meter and frequency meter.