Calculate zero speed torque for a permanent magnet d.c. motor.

Q.  The torque constant (Km), of a permanent magnet d.c. motor is 0.25 V sec / radian and armature resistance is 2 ohm. If the applied armature voltage is 90 V, then its zero speed torque is
- Published on 21 Oct 15

a. 10.45 N-m
b. 11.25 N-m
c. 13.65 N-m
d. 15.56 N-m

ANSWER: 11.25 N-m

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