Problem 2 A 460-V four-pole 75-hp 60-Hz Y-connected three-phase induction motor develops its full-load induced torque at

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Problem 2 A 460 V Four Pole 75 Hp 60 Hz Y Connected Three Phase Induction Motor Develops Its Full Load Induced Torque At 1 (116.58 KiB) Viewed 59 times

Problem 2 A 460-V four-pole 75-hp 60-Hz Y-connected three-phase induction motor develops its full-load induced torque at 3.5 percent slip when operating at 60 Hz and 460 V. The per-phase circuit model impedances of the motor are R = 0.0582 Xx = 1892 X = 0.32 22 X = 0.38622 Mechanical, core, and stray losses may be neglected in this problem. (a) Find the value of the rotor resistance R, (b) Find Tmax Smax 5 and the rotor speed at maximum torque for this motor. (C) Find the starting torque of this motor.