Hi,
I am a 'very very old thing' I dont recall ever seeing one or hearing the term SUS.

Do you have a pic or spec sheet, I'm curious to know if it went by any other name.

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Eric
"Good enough is Perfect"

PIC tutorials:
Gramo's: www.digital-diy.net/
Bill's: www.blueroomelectronics.com/

 

Google has 156,00 links to articles with SUS thingies. There are datasheets.
A SUS is like a one-way DIAC.

They are still made (as replacements?) to switch on SCRs.

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Uncle $crooge

 

hi guys
sorry been off for a bit...will be posting re-done test as soon as i scan it

thank you all and God bless !

 

hey guys...well here it is....all fixed up and done

please be kind to check it over
i really appreciate your time for doing this
Thank you.

 

Much better..........however

#20 again! it's a 28 volt coil, how can you operate it with 5 volt circuit ?????

#21 Kind of a bad question but I think D is a better answer then C....


Lefty

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Measurement changes behavior

 

In my opinion your answers to 14, 20, 21, 23 and 25 are wrong.
Compare Q25 with Q14, they are basically the same question.
In my opinion Q4 is ambiguous. Rotary switches often have many positions, but sometimes only have two.

JimB

__________________
Experience is directly proportional to the value of the equipment ruined.

 

With regard to question 14, I think I mentioned last time that you cannot assume the entire 12V will be dropped across the resistor. 1.5V is dropped across the diode (according to the question) and, since the resistor is in series, that only leaves 10.5V to be dropped across the ressitor.

Do your calculations with this in mind (rearrange Ohm's law to make R the subject) and you'll come up with the correct answer.

Brian

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Electronics Test Development Engineer
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ok for #14 redid my calculations...and came up with answer B:350 ohms

for #20 i came up with D:"A battery source of 28V must be used to make the coil operate properly"


but as JimB posted, im still not sure why #23 is wrong....i did find the answer in the text book

and i re-checked #25 i still come up with 664 ohms

 

Answer to #25 is 664 Ohms.. I don't know why JimB thinks otherwise..

BTW, how do you feel about learning about obsolete electronics that you'll never use? (SUS)

 

well....i'll learn whatever they give me as long as i try and get good marks

i know i'll probably won't even use it but what can i do eh?

 

ok so i just submitted the exam...and got 96% on it


one wrong answer.....it was #23, it suppose to be "A"

 

It seems very counter-productive to learn about something that you're never going to use and, to make it worse, is obsolete anyway. Can I ask, what is the title of this course? I might get in touch with them and ask to see their syllabus (for personal interest).

Brian

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Electronics Test Development Engineer
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Congrats!

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MechTronics

World of Warcraft is a disease

 

I understand your position.

However, shame on them for failing to properly equip you with knowledge that you can put to use in an employment situation.

 

A transcription error from my scribbled notes.
Q25 is correct, I was trying to say that 14 is calculated the same way as 25...
and made a bit of a marmelade of it!

JimB

__________________
Experience is directly proportional to the value of the equipment ruined.