Recent content by Rafeng404

"ALL Vr terms" head slap! Bloody hell! cheers mate i realize what I haven't been doing now. I have been negating the first Vr term. I am such a spanner sometimes. Thank you all.

Lads, Apologies, perhaps I should not have done this on my phone after a back shift. 1. F= frequency, C= capacitance, Rl = Load resistance, Vc = Peak voltage across capacitor, Vr = voltage ripple peak to peak. 2. The formula is for Vr ( see attached) 3. The formula is in our books, you need to...

Thanks mate, I have done as you advised :) hopefully someone will put me and a few others out of our misery soon haha.

Hi lads, Working through my HND course books and I have come across a formula that I cannot get to give me the same answer as the book. Nor can some of my engineering student friends. Values are: F=50 C=500^-6 Rl = 100 Vc=31.03 The formula is =(1/(2FsCRl))*(Vc-(Vr/2)) Inputting the values...

Hi Guys, I seem to be having trouble with the math here, I get the same values up until the 10.38V. Can you show me how you solved for Vppr please? The example in the book doesn't make sense either and I am pulling what little hair I have left out haha. I feel like I have forgotten some basic...

Will do, thank you.

Thank you for your reply, just so that I understand you correctly, in this case, as we know all the values it is ok to do what I did?

Hi guys, Just thought I would chime in in case as a semi novice like me is reading this thread and to make sure there is nothing wrong with what I have done or if there is a situation where it would be none sense. Hopefully one of you clever lads will be able to put me right. I got the 1nA...

Thanks mate, I do want to stress however that i am not looking for the answer here. I just need a nudge in the right direction or better still a good resource to look at. I am not finding my books very useful...

Abcd Hi mate, I am out of the country at the moment. But basiacally i have a table of values from A1,A2 through to D1, D2 but I can't find the formulas i need to find R,L,G,C.. The values in the table do have the relevant units ie ohms, S, etc with their respective imaginary part. The...

Hi mate, Did you ever find the solution to part (C)? I cannot find for the life of me find any info on how to solve it. I have very similar answers to you for the rest of 4 but (c) has become a road block. Any help would be much appreciated, it almost feels like something is missing from the...

Hi all, I too have the same problem and I am suspicious that getting the angular acceleration was that easy... There are pages and pages of examples in my books on how to do it that are much harder. I read somewhere that because it is a flywheel you cannot use alpha = a/r... Is that true...

*Done all the

Hello again, I have don't all ,y calculations and I have got the same as everyone else.. I am doing this distance learning and the books aren't very good. I'm struggling to see what values I should be comparing to determine what the mode of failure would be, ie if its buckling how have I proved...

So basically I need to be an English professor as well as an engineer to get this HNC... Haha. Thank you for your fast response, much appreciated.