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Author anyone anygood with electronics questions?
Kris TD
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Registered: 25th Mar 02
Location: Ware, Hertfordshire
User status: Offline
29th Apr 03 at 13:27   View User's Profile U2U Member Reply With Quote
hey im stuck on a couple of questions for my uni work, they are quite simple, but hey, lol

1. a coil of wire takes 10 A from a 100 V dc supply. when connected to a 50hz ac supply of 100v it only takes 5 A. calculate the inductance of the coil.

is it:
a) 17.32 mH
b) 55.3 mH
c) 31.8 mH
d) 63.65 mH

2. what ac supply voltage is required if a half - wave recifier is to be used to drive a 24v dc motor at full speed?

a) 75.4 V
b) 53.3 V
c) 24v
d) 33.94v

cheers people, any help is much appreciated.
Dave Hay
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Registered: 10th Apr 02
Location: Aberdeenshire
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29th Apr 03 at 13:30   View User's Profile U2U Member Reply With Quote
i really should know the answers but i nmever did like electrical modules in myu mechanical engineering degree

sorry m8

also inductance sucks lol and rectifiers

nae luck m8!

fancy doing my exams for me in a fortnight and ill have a crack at your work?
Kris TD
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Registered: 25th Mar 02
Location: Ware, Hertfordshire
User status: Offline
29th Apr 03 at 13:34   View User's Profile U2U Member Reply With Quote
exactly, this is a retake module from last year, already fcuked it up once, lol
scottscorsa
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Registered: 24th Apr 02
Location: Scotland,Greenock
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29th Apr 03 at 13:38   View User's Profile U2U Member Reply With Quote
I really should know this , I have the amswers in the house along with 1000 other electronics equation I had to do , have u done Thevenins or the Norton theorom yet ??
Kris TD
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Registered: 25th Mar 02
Location: Ware, Hertfordshire
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29th Apr 03 at 13:40   View User's Profile U2U Member Reply With Quote
done thevenins. ive just been given the work but not gone to the lectures becasue they clash with more important ones from this year.
Kris TD
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Registered: 25th Mar 02
Location: Ware, Hertfordshire
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29th Apr 03 at 13:48   View User's Profile U2U Member Reply With Quote
question 1 is D
3CorsaMeal
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Registered: 11th Apr 02
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29th Apr 03 at 13:49   View User's Profile U2U Member Reply With Quote
i reckon 2 is C,
pringle
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Registered: 4th Mar 03
Location: planet oz(somewhere with women)
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29th Apr 03 at 13:51   View User's Profile U2U Member Reply With Quote
2 is c a think mate, mind a aint gid a electrics
Kris TD
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Registered: 25th Mar 02
Location: Ware, Hertfordshire
User status: Offline
29th Apr 03 at 14:06   View User's Profile U2U Member Reply With Quote
question 2 is 53.3 i think.so b.
pringle
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Registered: 4th Mar 03
Location: planet oz(somewhere with women)
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29th Apr 03 at 14:08   View User's Profile U2U Member Reply With Quote
shows how gid i am ay mate

 
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