Question

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What is the difference between the speed and the torque of a motor? (Simple words)

Answer 1

Speed of a motor is defines as the number of revolutions per minute. Its unit is 'rpm' in electrical machine. As the rotor is rotating, we are taking speed in terms of rotation.

And torque is,

T = (Power output of motor)/(Speed in rad/s). Its unit is Newton-metre. It is inversely proportional to speed. Output power is the rated power or shaft power mentioned on the plate of motor.

Now generally we use speed in rpm, but in torque equation we use speed in rad/s unit. The relation is:

Speed in rad/s = ((2*pi)/60) * speed in rpm.

Conclusion: Both are totally different and inversely related.