Hey Fizz, I was looking at Exam Choice 2012 and well, there's a few MC questions that were a bit doubtful.
Q6. A is the correct answer but isn't magnetic field strength the same, regardless of area? Making D the correct answer?
Q7. C is the correct answer but aren't most devices running on DC? Making it more difficult has everything needs to be rectified. I thought A was more correct, even though it's not exactly more efficient unless you step up.
Q8. I don't understand why increase in voltage does not speed up the AC motor like it does for the DC motor.
Q11. Doesn't seem very clear of what they want to me and I don't see how those images show an induction motor...
Apart from that, it's quite a good test. Thanks