heyy everyone me again... unit 203 ...again help??

[robinson]

hey everyone im back again its that time of my resit! soon i have been revising lots and been to extra lessons, due to the "ressesion" i have been laid off for 3 months but waiting the phone call for my job back ! i have aquired a tempory job already though ! last time round i have to say everyone was amazin on this site so was wondering if anyone knew of any practice papers for the 203 exam? i have seen the ones on swindons massive but now know them off by heart. i have now seen all the practice questions and answers and help sheets he had put on although a password is needed... any help would be very much appricated.. thanks again

ps exams on the 10th feb this time and is ... LAST EVER CHANCE!! excuse the spelling lol

 

[robinson]

A transformer has a primary winding with 1100 turns and 380 secondary turns. It is connected to a 230v supply. What will the secondary voltage be?

any help please?

 

[Marc]

Roughly 80v.

Vp/Vs = Np/Ns

Where Vp = Input voltage (230)

Vs = Output Voltage (Unknown)

Np = Primary Turns

Ns = Secondary Turns

 

[robinson]

ahhhh thank you!

 

[robinson]

hey in a four wire 3 phase system the phase voltage is 220v. the line voltage will be??

sorry my exams tomoro and very worrried now ! (cant type what i am doin about it ) it! lol minds gone blank sorry if its a blatent answer

 

[Marc]

hey in a four wire 3 phase system the phase voltage is 220v. the line voltage will be??sorry my exams tomoro and very worrried now ! (cant type what i am doin about it ) it! lol minds gone blank sorry if its a blatent answer

220 * 1.73 = 380.6

Good luck with your exam, it's natural to be worried but you'll be fine.

 

[robinson]

I PASSSED !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 3 times lucky ahha! got a credit! thank you alll for your help wouldnt have done it without any of it! will reccomend this website to anyone whos a sparky ! brillent website... i will always be on here for anything i need to know lol thanks again... 100000/10 for the website!

 

[Doc Hudson]

Congratulations Robinson, I am glad you find the forum helpful.

Doc H.

 

[m4tty]

Well done matey onwards and upwardsGuinness

 

[a1]

Congratulations Mate.

Why stop at electricians? Tell everyone.

 

[androiduk2002]

Well done Rodinson, Told you to relax it was all locked up in that head of yours

Now time to party

:Y :Y:YGuinnessGuinnessGuinness:Y:Y:Y

Oh btw dont drive home ROTFWLROTFWLROTFWL

 

[Apache]

Congrats

 

[blacberry22]

A transformer has a primary winding with 1100 turns and 380 secondary turns. It is connected to a 230v supply. What will the secondary voltage be?any help please?

Vs = Ns*Vp/Np so it would be 79.45V here's some more if there any good to you

Vp= Np*Vs/Ns

Np= Ns*Vp/Vs

Ns= Np*Vs/Vp. I am coming up to my 203 in a couple of months so any bit of advice would be great. Good luck an let me know how it gose.

 

[blacberry22]

Only just read the date you posted your post looks like you didn't need my help well done mate. Any advice on the exam?