Which of the following phase switching sequence represents half-step operation of a stepper motor ?Question 6Select one:a.A, B, C, A …b.AB, BC, CA, AB …c.A, C, B, A …d.A, AB, B, BC …

The half-step operation of a stepper motor is represented by the phase switching sequence: d. A, AB, B, BC …

Here's why:

A stepper motor moves in discrete steps, known as 'full steps'. However, a 'half-step' mode allows the motor to move only half the distance it would in a full step. This is achieved by alternately firing two phases, and then a single phase, which results in twice the resolution.

The sequence A, AB, B, BC … represents this operation.

• 'A' and 'B' represent the two phases of the motor.
• 'AB' means both phases are active, moving the motor half a step.
• Then 'B' is active alone, moving the motor another half step, and so on.

This sequence allows for smoother, but slightly less torquey, operation of the motor.