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## Homework Statement

I am asked in a lab report to explain the conservation of power in the armature circuit of the DC motor.

## Homework Equations

This is the data I have acquired:

## The Attempt at a Solution

I have been reading around, and I have learned somewhat about the Armature Copper Loss. I am saying that this is one part of the energy that is lost in a DC motor. Is there any other source ? Is there a power conservation relation or equation for the armature circuit of a DC motor ? I mean, from looking at the data you can only see that as expected with a higher load you need more power. I don't know how to study the conservation of power of the armature circuit with this data ...

Thanks