Q77 · Practice questionComplex familiar5 marks
QUESTION 77 (5 marks)
An ideal transformer has primary turns and secondary turns. The primary is connected to AC and the secondary supplies a load. Determine the secondary voltage, secondary current and primary current.
WORKED SOLUTION
5 marksPractice marking scheme
ANSWER
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Worked solution
Turns ratio:
Load current:
For an ideal transformer, input power equals output power:
Uses turns ratio.
Calculates secondary voltage.
Calculates secondary current.
Uses ideal power relation.
Calculates primary current.
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