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

Also uploaded:

http://www.phpnerds.com/q1.JPG
http://www.phpnerds.com/q2.JPG
http://www.phpnerds.com/q3.JPG
http://www.phpnerds.com/q4.JPG
http://www.phpnerds.com/q5.JPG

Attached Files

questions.zip (214.7 KB, 10 views)

 

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

 

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

__________________
PIC programmer software, and PIC Tutorials at:
http://www.winpicprog.co.uk

 

Exam went well.

 

Well done :lol:

__________________
PIC programmer software, and PIC Tutorials at:
http://www.winpicprog.co.uk