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A stepper mot...

Question

A stepper motor has 150 steps. The output shaft of the motor is directly coupled to a lead screw of pitch 4mm, which drives a table. If the frequency of pulse supply to motor is 200 Hz, the speed of the table (in mm/min) is

A

280

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B

400

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C

320

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D

300

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Solution

The correct option is C 320
Frequency of pulse = 200 Hz = 200 pulses/s
Distance traveled per pulse $= \frac{4 m m}{150}$
Therefore, speed of table $= \frac{4}{3150} \times 200$
$= \frac{16}{3} m m / s = \frac{16}{3} \times 60 = 320 m m / s$

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