So that an electric motor can rotate in the correct axis, it is clear that he has some effort and not just set the force used, then we can say that is not enough to define the force used: one must also know how far from the center axis force is applied, this effort is measured by the conjugate, which is the product of force by the distance to calculate the energy and mechanical power.

The power applied measures the rate at which power is applied or consumed by the engine then, for example, if a well is 25.5 meters deep, the energy used to bring the pail bottom to the wellhead is always the same, this amounts to 30 x 25.5 m N = 410 Nm. cm3155

Thus it is noted that the mechanical energy measurement unit, Nm is the same as that used for the electric motor torque, and yet it comes to different kinds of magnitudes, which must not be confused ever.

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