Please explain your answers step by step how did you solve or why u needed those formulas etc. Thanks in advance.

Introductory Circuit Analysis (13th Edition)
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ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
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Please explain your answers step by step how did you solve or why u needed those formulas etc. Thanks in advance. 

 

You know better than me but I'm mentioning just for clarification this question is on the electromechanical energy conversion. 

The no-load and locked-rotor test results of a three-phase 10 HP, 220 V, 60 Hz, 6 poles star connected induction motor are; The no-load test: VNL=220 V, PNL=340 W, INL=6.2 A The locked-rotor test: VSC=54 V, PSC =430 W, ISC =15.2 A The voltage across the stator windings is 2 V when nominal DC current flows through it. Coefficient for DC resistance is 1,25.

a) Calculate the equivalent circuit parameters and draw the complete single-phase equivalent circuit of the induction motor.

b) Calculate efficiency of the motor for s=0.06 by using the approximate equivalent circuit (RFe core resistance is not ignored).

c) Shaft torque for s=0,06d) Slip value at the maximum (breakdown) torque,

e) Maximum (breakdown) torque of the induction motor.

f) Speed of the motor at maximum torque point.

g) Rotor frequency at maximum torque.

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