Compute the countercurrent traveling time of the induction machine assuming that the motor is running at no load.

A 480 V, 60 Hz, three-phase induction motor has a rated speed at full load of
1720 rpm, stator resistance of 1 ?, rotor resistance of 1 ?, and equivalent winding
reactance of 4 ?. Compute the starting time of the motor at no load and at full
voltage and frequency. The inertia of the motor is 3 Nm sec2.


for definition of s1 and s2

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