# Find the starting torque, the maximum torque, and the speed at maximum torque for a 3 phase, 50 Hz, 6 pole wound rotor induction machine.

A 3 phase, 50 Hz, 6 pole wound rotor induction machine has the following per phase parameters:

Rs = Negligible

Ls = 0.003 H

Rr = 0.3 Ohm

Lr = 0.002 H

Lm = 0.1 H

Rc = Infinity

Ns/Nr = 1.2

The voltage applied to each phase is 240 Vrms.

Find: the starting torque,

the maximum torque, and

the speed at maximum torque.