Electrotechnology Exam 09

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Hey everyone, just finished the exam.... It seemed way too easy
Even had enough time to write down my answers for the mulitple choice:


1)C 2)C 3)D 4)C 5)D 6)C 7)A 8)A 9)B 10)C
11)B 12)C 13)B 14)B 15)D 16)A 17)D 18)B 19)B 20)A


I stuffed up with the time constant question though where you had to multiply it by 5 to get the time taken (5x10microseconds if i remember correctly).
Also, we never learned about any cores other than iron for the inductor question. So i guessed steel for the diagram and copper for the low frequency high current application question...

Everyone else's thoughts?