Calculate the 3-∅ power developed in the IM using the following data: VL=20 V, IL=5 A, cosΦ=.8.(a) 138.56 W(b) 128.41 W(c) 163.78 W(d) 177.59 WI had been asked this question by my school teacher while I was bunking the class.I would like to ask this question from Power Rating Determination of Electric Motors for Different Applications in chapter Rating and Heating of Motors of Electric Drives

Calculate the 3-∅ power developed in the IM using the following data

1.	Calculate the 3-∅ power developed in the IM using the following data: VL=20 V, IL=5 A, cosΦ=.8.(a) 138.56 W(b) 128.41 W(c) 163.78 W(d) 177.59 WI had been asked this question by my school teacher while I was bunking the class.I would like to ask this question from Power Rating Determination of Electric Motors for Different Applications in chapter Rating and Heating of Motors of Electric Drives
Answer» RIGHT CHOICE is (a) 138.56 W Easy explanation: The power developed in the IM is √3VLILcos∅. The power is INDEPENDENT of TIME and frequency. P=√3VLILcos∅=√3×20×5×.8=138.56 W.

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