6. A 50 hp, 440-V, three-phase induction motor with an efficiency of 0.90 and a p.f. of 0.85 on full load is supplied from a 6600/440-V, delta/star connected transformer. Calculate the current in the low ! voltage phases. * A. 49 A B.64 A 55 A D. 72 A

6. A 50 hp, 440-V, three-phase induction motor with an efficiency of 0.90 and a p.f. of 0.85 on full load is supplied from a 6600/440-V, delta/star connected transformer. Calculate the current in the low ! voltage phases. * A. 49 A B.64 A 55 A D. 72 A

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

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.28MCQ

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Question

16. A 50 hp, 440-V, three-phase induction motor with an efficiency of
0.90 and a p.f. of 0.85 on full load is supplied from a 6600/440-V,
delta/star connected transformer. Calculate the current in the low
21 voltage phases.
A. 49 A
B.64 A
´55 A
D. 72 A

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