Discussion
Assertion (A): A stepper motor can be positioned without feedback.
Reason (R): Each pulse advances it by a fixed and repeatable angle.
Select the correct option.
Answer: A
Correct answer: Both A and R are true, and R is the correct explanation of A
Both are true and the reason gives the mechanism. Since each pulse advances the shaft by the same repeatable angle, counting the pulses issued is equivalent to knowing the position, and no measurement is needed. The qualification is that this holds only while no step is lost - which is exactly why the load must be kept within the torque available.
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