How the direction of rotation of the DC shunt motor can be changed?
The direction of rotation of DC shunt motor can be reversed by reversing either field terminals or armature terminals but not both. The torque can be changed by changing either field flux or armature current. Hence the motor will rotate in the same direction by changing the supply connections.
How do you change the direction of a rotation on a DC motor?
The direction of rotation of a dc motor can be reversed:
- By reversing the connections of both armature and the field windings with the supply.
- By reducing the field flux.
- By reversing the connections of either the armature or the field winding connection with the supply.
What happens if shunt field connections are reversed?
What will happen if the the supply terminals are reversed in case of a DC shunt motor? The motor will run in reverse direction. The motor will run at its normal speed in the same direction as before. The motor will stop.
Why the direction of rotation is changed by changing armature current in a DC Compound Motor?
This is because the direction of the magnetic field in both the armature and field windings reverse, and so remain in the same direction relative to each other. The direction of rotation of DC series motor may be reversed by changing; The polarity of the either field. or the polarity of the armature winding.
When we interchange the connections of armature and field winding of DC motor What is the effect on direction of rotation of motor?
One reversing both the winding connection, both the fields produced by respective currents will reversed causing the net action in same direction, so when both the connections of winding of DC motor are reversed, there is no effect on direction of rotation.
What would be the effect of reversing the armature supply polarity?
For DC motors, plugging is achieved by reversing the polarity of the armature voltage. When this happens, the back EMF voltage no longer opposes the supply voltage. Torque is developed in the opposite direction of the motor’s rotation, which produces a strong braking effect.
What happen if the direction of current at the terminals of DC motor is reversed?
Direction reversal of DC Series Motor: In the case of DC series motor, the field and armature winding are connected in series and if the polarity of the input voltage is changed the direction of the field & armature current both get changed so the direction of speed will remain the same.