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The torque characteristic of a 3-phase induction motor is similar to that of

  • The torque characteristic of a 3-phase induction motor is similar to that of DC Shunt Motor.
  • Both types of motors can develop high starting torque and have a relatively constant torque over a wide speed range.
  • The torque in a 3-phase induction motor is proportional to the square of the applied voltage, the slip (difference between synchronous speed and rotor speed), and the rotor resistance.
  • Similarly, in a DC shunt motor, the torque is proportional to the armature current and the field flux.
  • In both types of motors, the torque can be controlled by adjusting the voltage or current supplied to the motor.
  • In a 3-phase induction motor, the voltage can be adjusted using a variable frequency drive (VFD) or other methods, while in a DC shunt motor, the voltage can be controlled using a rheostat or other devices.