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Q1) 8-hp, 310-V, three-phase, (f) 55 - Hz, induction motor has (p) 10 poles. At the rated load, it has a speed (Nr) of 440r/min, calculate: (a) The synchronous speed (Ns) in rad/s (b) The slip in rpm and the percent slip at the rated load (S%)  (c) The rotor frequency at the rated load. (fr)

Q1) 8-hp, 310-V, three-phase, (f) 55 - Hz, induction motor has (p) 10 poles. At the rated load, it has a speed (Nr) of 440r/min, calculate: (a) The synchronous speed (Ns) in rad/s (b) The slip in rpm and the percent slip at the rated load (S%)  (c) The rotor frequency at the rated load. (fr)

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
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Q1) 8-hp, 310-V, three-phase, (f) 55 - Hz, induction motor has (p) 10 poles. At the rated load, it has a speed (Nr) of 440r/min,
calculate:
(a) The synchronous speed (Ns) in rad/s
(b) The slip in rpm and the percent slip at the rated load (S%) 
(c) The rotor frequency at the rated load. (fr)

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