Exam4-Spring08 - EEL 3211 Test 4 April 23, 2008 Time limit:...

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EEL 3211 Test 4 April 23, 2008 Time limit: 50 minutes, Closed note, closed book, one (1) 8½ x 11 sheet of notes allowed. A 208-V, four-pole, 60-Hz, Y-connected induction motor is rated at 10 kW. Its equivalent circuit components are: 1212 0.2 0 , 0.0 5 , 0.4 0 , 0.4 0 , 10.0 300W , 0W , 200W M mechanica l mis c core RRXXX P PP =Ω =Ω =Ω =Ω =Ω = ≈= For a slip s = 0.05 find: a) (10%) The line current I L (magnitude and phase). b) (10%) If the line current were 8 4 36 L I = , find the stator copper loss P SCL . c) (10%) For the line current given in part (b) find the air gap power P AG . d) (10%) If the air gap power were P AG = 20 kW find the power converted from electrical to mechanical form P conv . e) (10%) For an air gap power of
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This note was uploaded on 07/28/2011 for the course EEL 3211 taught by Professor Staff during the Summer '08 term at University of Florida.

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