Name the types of motors used in vacuum cleaners, phonographic appliances, vending machines, refrigerators, rolling mills, lathes, power factor improv

vacuum cleaners: 1 phase or3 phase induction motors depending on the capacity of motor

phonographic appliances: DC motors are used in such appliances ( Mostly Speed control ) vending machines: Stepper motors are mostly used in such application with some controlled actuators

refrigerators: Simple AC motors or Induction Motors

rolling mills: Induction Motors with gear system to have more torque

lathes: AC motors as well as Dc motors are used in lathe Machine ( varying from Machine to machine)

power factor improv: Synchronous Motors are used for improving power factor but first we have to run system on induction motor to achieve near synchronous rpm