Page 688 - Basic Electrical Engineering
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Dividing both sides by rotor input
∴ Rotor copper loss = Slip × Rotor input (8.5)
The above is an important relationship which can also be used to arrive at the
expression for torque as has been shown below.
Rotor input × Slip =
Putting the value of I from eq. (8.4)
2
or,
If the supply voltage, V is constant, then the induced EMF E in the rotor at
20
standstill will be constant (like in a transformer)
Therefore,
