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Some questions- need answers please

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phalynx212

New Member
Hi all- first off let me say a bit about myself.
I was in the navy as a electronics tech 11 years ago.
I worked afterwards for a company not really related to cirucits and electronics, but still technical.
I chose to be a stay at home dad late 2007 with my new son.
I now find myself separated from my wife and thrust upon the world because she...and he... here I am, looking for work.
I have a test that Im studying for and I am slightly thrown off by some questions. I hope you can help.

What does a capacitor do when circuit voltage increases?
a) Charges.
b) Fails.
c) Discharges.
d) Nothing.

What does a capacitor do when a circuit voltage decreases?
a) Charges.
b) Fails.
c) Discharges.
d) Nothing.

What happens to a capacitor when its capacity is exceeded?
a) It shuts down.
b) It releases excess capacity.
c) Breaks down, short circuits, arcing, bursts.
d) Nothing.

How do circuit protection devices protect against excessive current?
a) Restricts the amount of current flow.
b) Reduces the amount of current flow.
c) Opens the circuit when the current flow exceeds a preset limit.
d) Shuts down the circuit when the current flow exceeds a preset limit.

Interlocks can either be:
a) Normally open or normally closed.
b) Temporarily open or temporarily closed.
c) Permanently open or permanently closed.
d) Normally open and normally closed.

If a diode’s maximum reverse voltage rating is exceeded, the diode could become:
a) Open.
b) Closed.
c) Shorted.
d) Open or shorted.

Are the primary and secondary coils in a transformer electrically connected?
a) Yes.
b) No.
c) Only on the positive side.
d) Only on the negative side.



I thank you very much for any help you can provide. I really need to get my foot in the door. I found these particular questions a little vague- and just want to be certain.
I have another possibility with a job- I offered to drive 3 hours to meet the manager and take a test and interview before he goes to a recruiting event in virginia. That test will be difficult as I have to relearn logic gates, truth tables, and identify faults given specific conditions via wiring diagrams. I have been reading Navy NEETS manuals since I found out 2 days ago. I have until Wednesday to cram and teach myself again.

Thanks again!
 

colin55

Well-Known Member
What does a capacitor do when circuit voltage increases?
a) Charges. Charges.
b) Fails.
c) Discharges.
d) Nothing.

What does a capacitor do when a circuit voltage decreases?
a) Charges.
b) Fails.
c) Discharges. Discharges.
d) Nothing.

What happens to a capacitor when its capacity is exceeded?
a) It shuts down.
b) It releases excess capacity.
c) Breaks down, short circuits, arcing, bursts.
d) Nothing.

Voltage exceeded? It may: Break down, short circuit, arc internally, burst.



How do circuit protection devices protect against excessive current?
a) Restricts the amount of current flow.
b) Reduces the amount of current flow.
c) Opens the circuit when the current flow exceeds a preset limit.
d) Shuts down the circuit when the current flow exceeds a preset limit.

Most circuit protection devices:
c) Opens the circuit when the current flow exceeds a preset limit.

Some circuit protection devices
d) Shuts down the circuit when the current flow exceeds a preset limit.

Some circuit protection devices
b) Reduces the amount of current flow.



Interlocks can either be:
a) Normally open or normally closed.
b) Temporarily open or temporarily closed.
c) Permanently open or permanently closed.
d) Normally open and normally closed.



If a diode’s maximum reverse voltage rating is exceeded, the diode could become:
a) Open.
b) Closed.
c) Shorted.
d) Open or shorted.

The diode could become damaged and short circuit or it could blow apart and become open. We don’t use the word “closed” We use the words: “Open or shorted” as the two words for a damaged diode.




Are the primary and secondary coils in a transformer electrically connected?
a) Yes.
b) No.
c) Only on the positive side.
d) Only on the negative side.


Generally not. Most often NOT. But if they are, we can call the transformer an “AUTO TRANSFORMER”
This is a transformer with a single winding in which the winding is “tapped” to create a primary and secondary so that the output voltage can be higher or lower than the supply.

Just ring me while you are doing the test and I will give you all the answers you need.
All the bankers cheat, why shouldn't we?
 
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phalynx212

New Member
thanks for those.
do you see what I mean by some of those answers being a little perverse?
it seems like there can be more than one answer to some of those questions.
if anyone else would like to discuss these, please add to this.
 

mark_3094

New Member
What does a capacitor do when circuit voltage increases?
a) Charges.
b)
c)
d)

What does a capacitor do when a circuit voltage decreases?
a)
b)
c) Discharges.
d)


If a diode’s maximum reverse voltage rating is exceeded, the diode could become:
a)
b)
c)
d) Open or shorted.
 

Ross Craney

New Member
Colin 55 is spot on. What I,d be doing is researching examples of all these so you can intelligently discuss the fact that there is no one answer. The trouble is that with all these physco tests employers use now days they may label you as undecissive or a **** stirrer
 
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