Discussion
The step angle of a stepper motor with 200 steps per revolution is
Answer: B
Correct answer: 1.8 degrees
\[ \frac{360}{200} = 1.8\ \mathrm{degrees}. \] The 200-step motor is the industry standard, and 1.8 degrees is the step angle almost every general purpose stepper offers. Halving it to 0.9 requires 400 steps, achieved by doubling the rotor teeth rather than by anything done in the driver.
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