speed control of induction motor

[kumaraswamy]

speed control of industrial motor is difficult, in pratical it is avalable only in case if u insert a VFD.. 

the cost of VFD is more expensive in such case,

is that any other way to control speed of an induction in simple way ..

[Ashutosh Bhatt]

if its a single phase motor than you can control its speed using diac – triac method

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