Question

4) i. no load speed. it is the speed achieved by the motor at no load,

ii. no load current. the current applied to a motor at no load is known as no load current, it is generally very small and is used to overcome the internal frictions.

iii. maximum continuous stall torque. it is the maximum toque a motor can produce when stalled, in the long run, without damaging the motor.

iv. electrical time constant ($T_{e}$=L/R) it is the time needed for the current to reach 63% of its final value in response to a step input in voltage.

v. torque constant is similar to motor constant. motor torque constant simply is motor torque divided by armature current.

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