Thread: CIM quiz
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Unread 15-11-2010, 21:00
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Re: CIM quiz

Quote:
Originally Posted by theprgramerdude View Post
Well, lets see....
Nicely done


Now some food for further thought.

In the first scenario, the motor is generating 100 oz-in of net torque (against the external load) plus torque losses at 3764 rpm (due to friction and windage).

In the second scenario, the motor is generating 100 oz-in of net torque (against the external load) plus torque losses at 1965 rpm (due to friction and windage).

In the second scenario the torque losses are less (due to the lower rpm). Therefore the total torque is less than the first scenario, and the current required should be slightly less. How much less ?