Definition of Magneto hydrodynamic generator (MHD): Magneto hydrodynamic generator (MHD) is a process for producing electricity by passing an ionized gas through a channel across which exists a magnetic field. Figure: Schematic Diagram of a MHD Generator Working Principle of MHD: In a conventional generator a conductor is moved against a regarding force and this requires work input. MHD is an analogous to conventional generator but a conducting fluid instead of conductor is moved through a magnetic field than a current is induced in the fluid. The fluid becomes ionized gas. When a ionized gas passed through a magnetic field some of the electrons in the ionized gas are diverted to one of the two electrode as shown above the figure.
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