# What are the different methods of speed control of induction motor?

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## What are the different types of speed control methods?

Thus, there are three general methods of speed control of D.C. Motors.

• Resistance variation in the armature circuit: This method is called armature resistance control or Rheostat control.
• Variation of field flux Ф This method is called field flux control.
• Variation of the applied voltage.

## What are the types of induction motor?

Types of Induction Motor: A Concise and Useful Guild

• Types of Single-Phase Induction Motors. Split Phase Induction Motors. 2&3. Capacitor Start and Capacitor Start Capacitor Run Induction Motors. …
• Types of Three-Phase Induction Motors. Squirrel Cage Induction Motor. Slip-ring or Wound Rotor Induction Motor.

## Why starters are used in induction motor?

⇒ The starter is a device which is basically used to limit the starting current by supplying reduced voltage to the motor at the time of starting.

## How do you calculate induction motor speed?

To calculate RPM for an AC induction motor, you multiply the frequency in Hertz (Hz) by 60 — for the number of seconds in a minute — by two for the negative and positive pulses in a cycle. You then divide by the number of poles the motor has: (Hz x 60 x 2) / number of poles = no-load RPM.

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