Page 686 - Basic Electrical Engineering
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expressed as
Figure 8.10 Power flow diagram of an induction motor
2
Rotor I R-loss (neglecting rotor core loss)
Mechanical power output is somewhat less than the power developed. This is
because of friction and windage losses.
8.9 TORQUE EQUATION
When three-phase supply is applied to the three-phase stator windings of an
induction motor, as shown in Fig. 8.11, a rotating magnetic field is produced
which rotates at synchronous speed, N where
s
