DC Motor Commutator Quiz

A split ring that reverses the current direction in the coil of a DC motor.

Reversing the current direction in the coil is essential for continuous rotation of the armature. Otherwise, the coil would only rotate half a turn before stopping.

The commutator segments momentarily lose contact with the brushes when the coil is vertical, causing the current to stop flowing briefly.

Inertia of the coil keeps it rotating even when the current stops momentarily as the commutator segments switch.

It ensures that the current direction in the coil changes consistently with each half turn, resulting in continuous clockwise rotation.

The direction of torque is directly related to the direction of current in the coil. By changing the current direction, the commutator also changes the direction of the magnetic field.

The commutator is a vital component in a DC motor. It provides the necessary current reversals to enable the coil to spin continuously.

The commutator reverses the current direction in the coil. It's made of a split ring, and as the coil turns, each segment of the ring makes contact with the brushes, changing the current flow.

When the coil becomes vertical, the commutator segments align with the brushes, creating a gap in the electrical circuit and interrupting the current momentarily.

Inertia is the tendency of an object to resist changes in motion. In a DC motor, inertia helps the coil continue rotating even though the current is momentarily interrupted when the coil is vertical.

The commutator ensures consistent clockwise rotation by systematically reversing the current direction in the coil with each half turn.

The torque produced by a DC motor is directly related to the current flowing through the coil and the direction of the magnetic field produced. The commutator controls the current direction and hence the torque direction.

It is a split ring that allows for the reversal of current direction in the coil of a DC motor.

Reversing the current direction in the coil is vital for continuous rotation. It allows the coil to keep rotating by repeatedly reversing the direction of the magnetic field.

When the coil is vertical, the commutator segments momentarily lose connection with the brushes. This interruption stops the current flow momentarily.

Inertia helps maintain rotation by keeping the coil moving even when the current stops momentarily due to the commutator gaps.

The commutator ensures clockwise rotation by continuously reversing the current direction in the coil, causing the magnetic field to alternate in a way that drives the coil in a clockwise direction.

The direction of torque is directly dependent on the direction of current in the coil. The commutator changes the current direction, which in turn affects the direction of the magnetic field and the resulting torque.

To provide electrical insulation between the rotating coil and the stationary brushes.

The commutator is stationary, while the coil rotates around it.

The speed of rotation in a DC motor is determined by factors like the voltage applied, the strength of the magnetic field, and the load on the motor. The commutator plays a role in reversing the current direction, but it doesn't directly affect the speed.

The commutator acts as a switch to reverse the current direction in the coil, which allows for continuous rotation.

The commutator is essential for the operation of a DC motor. It ensures the continuous rotation of the coil by reversing the current direction at the appropriate moment, allowing the coil to experience a consistent torque.

The commutator plays a crucial role in the operation of DC motors. It is a split ring that reverses the current direction in the coil, enabling continuous rotation.

The commutator is a critical component that ensures smooth and continuous rotation in a DC motor by continuously reversing the current direction in the coil.

The commutator acts as a switch that reverses the current direction in each half turn of the coil, which in turn controls the direction of the magnetic field and allows for continuous rotation.

The commutator is a vital component of a DC motor that allows for continuous rotation through its ability to reverse the direction of current in the coil.