Physics · Electrical Machines
For a DC machine operating as a DC generator, which of the following expressions correctly relates the total mechanical input power (Pmech(in)), the gross developed electromagnetic power (Pgross), and the rotational losses?
- 1Pmech(in) = Pgross + rotational losses✓
- 2Pgross = Pmech(in)
- 3Pgross = Pmech(in) × rotational losses
- 4Pgross = Pmech(in) - rotational losses
Correct answer
Pmech(in) = Pgross + rotational losses
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