The manufacturer's data sheet for a permanent-magnet dc motor indicates that it has a torque constant Km
Question:
The manufacturer's data sheet for a permanent-magnet dc motor indicates that it has a torque constant Km = 0.21 V/(rad/sec) and an armature resistance of 1.9Ω. For a constant applied armature voltage of 85 V dc, calculate
a. The no-load speed of the motor in r/min and
b. Its stall (zero-speed) current and torque (in N • m).
c. Plot the motor torque as a function of speed.
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part a At no load Eanl Kmwmnl V Thus Va Km Wmnl 405 radsec Hence the fulll...View the full answer
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