Exam tomorrow...help with questions??

Hi,

Got my A level electronics exam tomorrow, and i'm doing it self taught so it's kinda hard to understand some stuff sometimes. SO i was going through some past paper and came to some questions i couldn't answer. I've attached the questions in zip format. If you could check my answers (i've written them on) and for the ones i haven't, tell me the answers?

This would be really helpful!

Thanks
-Peter

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I eally don't want to just give you tha answers. I'll give you some tips.

Q1:
Well good start with the graph it does just make neg signals positive. But where did you get 12.7V from when the graph shows +/-9V

Yep good place of capacitor

Thanks for the tip. I got the 12.7 because somewhere in my book it says to multiply by root 2.

I was only asking for answers, because my exams tomorrow, and i've been through my books, and 4 past exam papers, and these ones have no marks schemes so i can't check the answers, and i have no idea about them.

Btw, notice Q2 = Q5, just Q5 is easier to read.

-Peter

petesmc said:

Thanks for the tip. I got the 12.7 because somewhere in my book it says to multiply by root 2.

Click to expand...

That's the RMS value of an 18V p-p sinewave, but probably not what your question wanted!.

Exam went well.

petesmc said:

Exam went well.

Click to expand...

Well done :lol: