ABSTRACT
A clutch may be described as a mechanical device which engages and disengages power transmission especially from a driving shaft to the driven shaft. In a typical clutch assembly, one shaft is attached to an engine or other power unit while the other shaft provides output power for work. Clearly, a clutch represents a device that may be used to connect the driving shaft to a driven shaft, so that the driven shaft may be started or stopped at will, without stopping the driving shaft. An electromagnetic clutch offers a better control on the developed torque required for the clutch action as compared to a simple mechanical clutch and hence a more reliable operation. Hysteresis clutch is the type of electromagnetic clutch having distinctly advantageous features that has an extremely high torque range.
