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Capacitor use in fan is made up of dielectic material which is in semi solid material having high capacity.but generation of heat in capacitor the semi solid material converted into dry solid because of evaporation.hence its capacity becomes lower and lower so for good result of our fan we have to change it.
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Description : Why is a capacitor used in a ceiling fan ?

Answer : For splitting phase so that a rotating magnetic field will be produced & as per Lenz's law a torque will be created & rotor starts rotating. In single phase if capacitor is not used for split phase then a pulsating mag. field is produced which is unable to produce torque on rotor

Answer : In a ceiling fan employing capacitor run motor secondary winding surrounds the primary winding.

Answer : It is simply variable resistance create opposition to flow of current and decrease or increase the speed of fan

Description : How to Install a Ceiling Fan

Answer : How to Install a Ceiling Fan The first step in installing is to determine the most appropriate distance between the fan blades and your floor. You will need a measuring device in order to accurately do ... respective house wires. The fan must be grounded to the metal box and to the fan itself.

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