In my experience, when people sit exams, their ability to remember how many questions in a particular subject there were is highly variable.
There are guidelines published which state that in the Airframe and Systems paper there will be at least:
29 questions on Airframe Systems
21 questions on Electrics (DC or AC or both)
16 questions on powerplant (Piston and or Gas Turbines)
and 18 questions on Emergency equipment.
However this is a minimum so you could get an extra 10 questions on anything, or more.
This means that normally 25% of the exam is electrics, yet people always seem to be surprised by this. Hopefully now you won't be.
Regards to all