A 440V, 60Hz, 10 pole delta connected induction motor is rated at 100KW. The equivalent parameter for the motor are: Rs = 0.15 Ω                                     R2` = 0.15 Ω Xs = 0.3 Ω                                          X2` = 0.2 Ω Xm = 6 Ω                                            R c = 120 Ω At full load condition, the friction and windage losses are 600W. The slip of the motor is 0.04. Calculate:   The stator line current Is ? The input power ? Stator copper losses ?

Electric Motor Control
10th Edition
ISBN:9781133702818
Author:Herman
Publisher:Herman
Chapter39: Synchronous Motor Operation
Section: Chapter Questions
Problem 14SQ: Induction motors and welding transformers require magnetizing current, which causes a. lagging power...
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A 440V, 60Hz, 10 pole delta connected induction motor is rated at 100KW. The equivalent parameter for the motor are:

Rs = 0.15 Ω                                     R2` = 0.15 Ω

Xs = 0.3 Ω                                          X2` = 0.2 Ω

Xm = 6 Ω                                            R c = 120 Ω

At full load condition, the friction and windage losses are 600W. The slip of the motor is 0.04. Calculate:

 

The stator line current Is ?

The input power ?

Stator copper losses ?

The air gap power PG ?

The converted power Pconv?

The torque induced by the motor ?

The load torque ?

The starting torque?

The efficiency of the motor ?

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