Homework problem: The per-phase equivalent circuit parameters of 33 kW, 60 Hz, star-connected, 4 pole, 1755 rpm 3-0 IM are: R1= 0. j0.5 2, Xm= j20 2, R2 = 0.12, X2 = 0.2 N. If the mechanic (windage and friction) are 650 W and iron losses are 300 W, deter following when the motor operates at full load at rated speed: (a) The synchronous speed. (b) The slip. (c) The input current and power factor. (d) The input power. (e) The useful mechanical power. (f) The output torque. (g) The motor efficiency. %3D Use exact equivalent circuit and simplified equivalent circuit comments on the results obtained.

Homework problem: The per-phase equivalent circuit parameters of 33 kW, 60 Hz, star-connected, 4 pole, 1755 rpm 3-0 IM are: R1= 0. j0.5 2, Xm= j20 2, R2 = 0.12, X2 = 0.2 N. If the mechanic (windage and friction) are 650 W and iron losses are 300 W, deter following when the motor operates at full load at rated speed: (a) The synchronous speed. (b) The slip. (c) The input current and power factor. (d) The input power. (e) The useful mechanical power. (f) The output torque. (g) The motor efficiency. %3D Use exact equivalent circuit and simplified equivalent circuit comments on the results obtained.

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter2: Fundamentals

Section: Chapter Questions

Problem 2.48P

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