Pre-Knowledge: I know we use capacitors in Single phase induction motor because with one phase the the net torque is zero and Rotor won't rotate so we add another winding perpendicular(with capacitor) to that so that net torque is non-zero.
I have celling fan after some years celling fan max speed is not what it used to be so electrician change its capcitor and replace it with the same value new one and fan is back on its speed.
My question is that:
- By time what made fan to lose max speed(how is it related to capacitor)?
- What is the relation of capacitor value with the speed of motor?
- What are the capacitance limits for a certain winding on motor how much higher and lower value capcitance i can install.
Sorry for long question but i had to state things straight forward that are messing up my mind.