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exam4

# exam4 - EE321 Exam 4 Spring 2011 Notes You must show work...

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EE321 Exam 4 Spring 2011 Notes : You must show work for credit on Problems 1-3. Good luck!

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Handy Facts 7 0 4 10 μ π - = H/m Taken from, Continuous and Discrete Signal and Systems Analysis, 2 nd Edition, by McGillem & Cooper, 1984, CBS College Publishing, and one heck of a good book.
1.) 25 pts. Consider a single-phase transformer. The primary resistance is 1 , the primary leakage inductance is 10 mH, the referred secondary winding resistance is 1 , the referred secondary leakage inductance is 10 mH, and the primary-to-secondary turns ratio is 2. The magnetizing inductance may be considered to be infinite. A sinusoidal voltage of 100 V rms at 100 rad/s (note radian frequency) is applied to the primary and a resistance of 1 (physical, not referred) is placed across the secondary winding. What is the rms value of the actual voltage across the secondary winding?

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2.) 25 pts. Consider the operation of a 4-pole induction machine. Suppose 100 2 cos(100 2) 100 2 sin(100 2) ar br i t i
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exam4 - EE321 Exam 4 Spring 2011 Notes You must show work...

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