Induction Motor Starting Current / Torque & Input Line Current /Efficiency

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MovadoNow

Joined Jan 13, 2017
2
Hi all,

If anyone knows the solution to the following questions please advise me. I do not know how I can possibly proceed without being given power.

1.) "A 400V, 1760 rpm, 3-phase, 60 Hz, 4-pole, squirrel cage induction motor has the following parameters
r1 = 0.133 ohms r2 = 0.7 ohms X = 2.15 ohms
Rm = 132.6 ohms Xm = 25.91 ohms
Determine the starting current of the motor and torque at zero speed. Ignore windage and friction losses.


2.) "A 400V, 1760 rpm, 3-phase, 60 Hz, 4-pole, squirrel cage induction motor has the following parameters
r1 = 0.133 ohms r2 = 0.7 ohms X = 2.15 ohms
Rm = 132.6 ohms Xm = 25.91 ohms
Determine the Input line current and efficiency of the motor. Ignore windage and friction losses."
 

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