Concentric Vane Repulsion Type Moving Iron Instrument: A variation of the radial vane instrument is the concentric vane Repulsion Type Moving Iron Instrument. The instrument has two concentric vanes. One vane is rigidly attached to…
Moving Iron Instrument | Types of Moving Iron Instruments: Moving Iron Instrument can be classified into attraction and repulsion types. Repulsion type instruments are the most commonly used. Iron vane ammeters and voltmeters depend for…
Electrodynamometer Instrument: Electrodynamometer Instrument - The D'Arsonval movement responds to the average or dc value of the current flowing through the coil. If ac current is sought to be measured, the current would flow through…
Taut Band Instrument: The Taut Band Instrument utilizes the same principle as the D'Arsonval movable coil and fixed magnet. The primary difference between the two is the method of mounting the movable coil. The taut…
Practical PMMC Movement: The basic Practical PMMC Movement (also called a D'Arsonval movement) offers the largest magnet in a given space, in the form of a horse-shoe, and is used when a large flux is…
Permanent Magnet Moving Coil Instrument (PMMC): In this type of Permanent Magnet Moving Coil Instrument (PMMC), we have a coil suspended in the magnetic field of a permanent magnet in the shape of a horse-shoe.…
Working Principle of D Arsonval Galvanometer: The action of the most commonly dc meter is based on the fundamental princiÂple of the motor. The motor action is produced by the flow of a small current…
Different Types of Ammeters and Voltmeters: The following are the different types of ammeters and voltmeters in measuring instruments are PMMC Moving Iron Electrodynamometer Hot wire Thermocouple Induction type Electrostatic Rectifier Of these, the PMMC…
Atomic frequency standards and clocks: Atomic frequency standards and clocks - The measurement of time has two different aspects, civil and scientific. In most scientific work, it is desired to know how long an event…
Different Types of Standards of Measurement: A standard is physical representation of a unit of measurement. A known accurate measure of physical quantity is termed as a standard. These Standards of Measurement are used to…