The resistance of the coil is 0.2 ohm. The inductance of the coil is 1.2e-4 H. The rotor inertia is 1.0e-5 kg m2. The current to torque gain is 0.03 Nm/A. The friction torque is 0.09 Nm. A 12 V voltage source is applied to the motor.
Find the no load speed, stalled torque, stalled current, and no load current of this motor. Draw the current vs. load torque and speed vs. load torque lines.