A motor has an rpm range of 0 – 1000 rpm. In using a 9 bit DAC what will be…
2017
A motor has an rpm range of 0 – 1000 rpm. In using a 9 bit DAC what will be the maximum error in resolution, when an output voltage of 737 rpm is to be generated?
- A.
1.957 rpm
- B.
0.789 rpm
- C.
1.953 rpm
- D.
1.168 rpm
Attempted by 6 students.
Show answer & explanation
Correct answer: C
A 9-bit DAC has 2^9 = 512 levels.
Resolution step = 1000 / 512 = 1.953 rpm approximately.
So the maximum resolution error asked in the option set is 1.953 rpm.