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Which of the following can provide a speed control technique in the DC motor interfacing?(a) PCM(b) DPCM(c) ADPCM(d) PWMI got this question in an online interview.Question is from Power Controls in division Interfacing to the Analog World of Embedded Systems

Answer»

Right choice is (d) PWM

The explanation is: The pulse WIDTH MODULATION can PROVIDE a speed control technique in the DC motor interfacing by CHANGING its mark/space ratio.



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