The mechanical power P available from any electric motor can be expressed as:
P= 2πNT / 60 watts

**Induction Motor Torque**

The
mechanical power P available from any electric motor can be expressed as:

P= 2πNT / 60 watts

Where

N =speed
of the motor in r.p.m.

T =
torque developed in N-m

If the
gross output of the rotor of an induction motor is P_{m} and its speed
is N r.p.m., then gross torque T developed is given by:

Note.
Since windage and friction loss is small, T_{g} = T_{sh},. This
assumption hardly leads to any significant error.

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Electrical machines : Three Phase Induction Motor : Induction Motor Torque |

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