Fall2010_HW4 (1)

# Fall2010_HW4 (1) - a If the transformer were ideal what...

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ECE 430 homework assignment #4 (In class quiz – Fri, Sep 24) 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, single-phase 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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