It is said that speed of a induction motor is
N = 120* f / P
then how do you vary speed of a ceiling fan using a regulator
2007-11-01 05:45:58 · 3 answers · asked by Mukesh Dak 3 in Science & Mathematics ➔ Engineering
f - frequency.
P - no. or pairs of poles.
If the number of pairs of poles (magnets) increases then the speed will go down, and vice a versa. This is likely an undesired option.
If the frequency goes up, then the speed will go up and vice a versa.
2007-11-01 06:58:16 · answer #1 · answered by Sparks 6 · 0⤊ 0⤋
Regulator is actually a choke or inductor with 4 or 5 tappings depending on how many step on the selector switch. Speed regulator will reduce the motor's current by taking up certain voltage from the main supply.
2007-11-03 03:55:14 · answer #2 · answered by dwarf 3 · 0⤊ 0⤋
I know that most types of ceiling fans are speed controlled by potentiometers, or variable resistance switches. Usually three set resistances and an off position. So everything is controlled by how much electricity gets through. But I was never any good at determining what types of motors are what. So i dont know if it is an induction motor or not. Hope I helped any.
2007-11-01 16:22:41 · answer #3 · answered by Toledo Engineer 6 · 0⤊ 1⤋