1. The strength of the magnetic field of the stator. 3. The speed of the cutting action.
What 3 factors determine the amount of torque developed by an induction motor?
Torque of a three phase induction motor is proportional to flux per stator pole, rotor current and the power factor of the rotor.
What are the three factors that determine a torque?
Examples: Page 5 Torque is Determined by Three Factors: The magnitude of the applied force. The direction of the applied force. The location of the applied force.
What are the factors on which torque produced depends on an induction motor?
1. The part of rotating magnetic field which reacts with rotor and is responsible for producing emf. 2. The magnitude of rotor current in running condition.
How is torque developed in an induction motor?
An induction motor develops torque by inducing current to the rotor, which is proportional to the differential speed of the rotor and the rotating magnetic field in the stator. For NEMA design B motors the differential speed (called slip) is between 1% and 2% at full load.
How do we calculate torque?
A practical way to calculate the magnitude of the torque is to first determine the lever arm and then multiply it times the applied force. The lever arm is the perpendicular distance from the axis of rotation to the line of action of the force. and the magnitude of the torque is τ = N m.
What are the factors that determines torque?
- The factors on which the turning effect of force or torque acts are:
- – The magnitude of the applied force.
- – The distance of the line of action of force from the point of rotation of that body.
Which is the most important factor affecting torque?
The primary factors influencing the torque of an engine are: 1) displacement, 2) number of cylinders, and 3) bore to stroke ratio.
What are two factors that affect torque?
The magnitude of the torque depends on:
Applied force F: Larger forces increase torque. Radius r: Increasing the radius increases the torque. Angle between the force and lever arm θ: Directing a force perpendicular to the lever arm increases the torque.
Can a single force produce zero torque?
A single point force not acting at the COG, will always provide a torque but this torque will be accompanied by a net linear force as well since there is no opposing force. So, the net motion will be a combination of rotational and linear motion.
Which type of motor has high starting torque?
DC motor has high starting torque.In a series motor the same current flows through the armature and the field winding.
Which type of induction motor develops higher starting torque?
The capacitor-start motor develops a much higher starting torque, i.e. 3.0 to 4.5 times the full-load torque.To obtain a high starting torque, the value of the starting capacitor must be large, and the resistance of starting winding must be low.
What is the starting torque?
Starting torque is the torque transferred by the shaft coupling during run-up (see Start-up process). It is calculated based on the ratio of power (P) to angular velocity (ω) and is represented as a rotational speed function.
Why starter is 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.
What are the types of induction motor?
Types of Induction Motor: A Concise and Useful Guild
- Types of Induction Motors. Types of Single-Phase Induction Motors. Split Phase Induction Motors. 2&3. Capacitor Start and Capacitor Start Capacitor Run Induction Motors. Shaded Pole Induction Motors. Types of Three-Phase Induction Motors. Squirrel Cage Induction Motor. Slip-ring or Wound Rotor Induction Motor.
What is the function of induction motor?
An induction motor or asynchronous motor is an AC electric motor in which the electric current in the rotor needed to produce torque is obtained by electromagnetic induction from the magnetic field of the stator winding. An induction motor can therefore be made without electrical connections to the rotor.