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ECE 430 homework assignment #4
(In class quiz – Fri, Sep 25)
Text problem 3.2
Text problem 3.10 a) and b) only
(answers: 20A, 12 Ohms)
Text problem 3.12
Text problem 3.14
Text problem 3.17
Special problem
A 480/240 V, 4.8 kVA, 60 Hz, singlephase transformer is used to supply a 4.8 kVA load
with a 0.8 lagging power factor, at rated voltage (240 V).
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Unformatted text preview: a) If the transformer were ideal, what would be the magnitude of the current on the primary (480 V) side? (Answer: 10 Amps) b) What is the impedance of the load under the ideal assumption? c) Again, if the transformer is ideal, what would the impedance be as viewed from the primary side? (Answer: 38.4+j28.8 Ohms)....
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This note was uploaded on 10/24/2010 for the course ECE ECE430 taught by Professor Sauer,p during the Spring '10 term at University of Illinois, Urbana Champaign.
 Spring '10
 Sauer,P

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