An ideal frictionless dc permanent magnet motor operating from a 24 v source has a no load speed of 240 radians/sec and an armature resistance of 0.2 ohms. compute the stall torque of the motor in newton-meters.

12 N-m

Explanation:

The dc motor is operating at 24 V that is its terminal voltage V =24 V

Armature resistance = 0.2 ohm

No load speed = 240 radian /sec

For motor we know that as the motor is on no load so so

Power developed in the motor

Now we know that power = torque× angular speed

So

do you have any options?