HELP!! Need answers for test!!!

[Gator]

1. What is the optimum induced ac voltage on alarm
circuits?a)2.0,b)1.0,c)0.5 or d)0.1 volts?


2.What is the unit of measure for attenuation for a cable?a)volts,
b)decilels, c)Amps or d)Watts?


3.A detector installed in a residence that would meet U.L. requirements
would be...a)Extent 1, b)Extent 2, c)Basic, or d)Perimeter?

4.During troubleshooting, the voltage should be checked...a)under max
load, b)Normal operation, c)switches in test or d)switches open?


5.What type of branch circuit should be avoided for powering security
systems...a)G.F.I., b)lighting, c)Gen Purpose or d)Laundry room?



6.To what height above the floor must wiring be protected...6,7,8 or 10
feet?


7.What is the minimum temp variance needed to trip a passive infrared
motion detector...1,2,3 or 4 degrees?


8.In a 12 volt system, what voltage should be read across a closed
switch with a 6k ohm resistor?

 

[Jim Rojas]

I hate tests...

1. D? No clue
2. B
3. A
4. A
5. A
6. 8
7. 4
8. .02 volts?

 

[Robertm]

2.What is the unit of measure for attenuation for a cable?a)volts,
b)decilels, c)Amps or d)Watts?

Attenuation is measured in dB.

Bob

 

[Gator]

thanks for the help! A couple more...What is the maximum distance 18AWG
wire is suitable for a self contained siren? What is the maximum
allowable voltage drop for an audible device? What device reduces
current?a)resistor, b)capacitor?

 

[Robertm]

What device reduces

current?a)resistor, b)capacitor?

Not enough information given for an (a) or (b) answer. A resistor will
reduce both ac and dc current. A capacitor will reduce ac current dependent
on frequency and value of capacitor, while completely blocking dc current.
If we are talking dc, then a resistor will reduce the current somewhat
whereas a capacitor will reduce it to zero after the initial inrush current.

Bob

 

[Jim Rojas]

cent
Resistor

Jim Rojas

 

[Jim Rojas]

ent
Resistor

Jim Rojas

 

[Robertm]

cent
Resistor

Jim Rojas

If someone is asking these questions, they really need to study electronics
instead of memorizing answers.

Bob

 

[petem]

And db mean decibels...so B

Attenuation is measured in dB.

Bob

 

[petem]

those question look like they are coming from a wanabe electronic teacher..

there are mostly not enough info to provide real good answer..

 

[Robertm]

And db mean decibels...so B

Hey, I'm an electrical engineer, not a typist.

Bob

 

[Robertm]

And db mean decibels...so B

It should have been the other way around, Db, not dB. I type with two finger
and sometimes one finger gets there ahead of the other one. Yes, according
to my engineering manual, the "D" is capitalized, it isn't db.

Bob

 

[Robertm]

I did some further looking. We are both correct. From another book,
"Decibels may be expressed as either Db or db, although the former is
falling into disuse in favor of the latter." You must be younger than I am.

Bob

 

[Frank Olson]

What device reduces



Not enough information given for an (a) or (b) answer. A resistor will
reduce both ac and dc current. A capacitor will reduce ac current dependent
on frequency and value of capacitor, while completely blocking dc current.
If we are talking dc, then a resistor will reduce the current somewhat
whereas a capacitor will reduce it to zero after the initial inrush current.

Bob

A resistor won't reduce current. It'll drop voltage, but the current
remains unaffected. A capacitor will reduce current.

 

[Robertm]

A resistor won't reduce current. It'll drop voltage, but the current
remains unaffected. A capacitor will reduce current.

I agree, if we are looking strictly at the added resistor, it is a voltage
dropping device, not a current dropping device, and all calculations for the
load are based on the dropping voltage across the added resistor even though
the net effect of the resistor is that the current will be reduced by
reducing the voltage, assuming a series resistive circuit.

Bob

 

[Jim]

If someone is asking these questions, they really need to study electronics
instead of memorizing answers.

Bob

Also, has anyone considered that this is helping someone cheat on a
test?

 

[Bass' Helper]

Since Robert is busy thinking of new ways to annoy people he has asked
me, his trusted helper, to answer your questions like only Bass can.

1. What is the optimum induced ac voltage on alarm
circuits?a)2.0,b)1.0,c)0.5 or d)0.1 volts?<

The correct answer is Hamburgers

2.What is the unit of measure for attenuation for a cable?a)volts,
b)decilels, c)Amps or d)Watts?<

The correct answer is - Popups

3.A detector installed in a residence that would meet U.L. requirements
would be...a)Extent 1, b)Extent 2, c)Basic, or d)Perimeter?<

Ok, this is a tough one. I gotta say the correct answer is - Olson's a
Counter clerk

4.During troubleshooting, the voltage should be checked...a)under max
load, b)Normal operation, c)switches in test or d)switches open?<

Troubleshooting? Is this supposed to be funny? I'm Robert Bass. I never
have trouble. Only those morons from the IB have trouble. My clients
possess the tools and modicum of skills necessary to avoid trouble. How
dare you ask such a question. You sir are way out of line, and the
level of offense has risen to it's apex.

5.What type of branch circuit should be avoided for powering security
systems...a)G.F.I., b)lighting, c)Gen Purpose or d)Laundry room?<

I just received a call informing me the correct answer was kidnapped
earlier this morning by squeegie armed Guadalupan midgets. I suspect
Bob Worthy and the ECLB cronies are behind this.

6.To what height above the floor must wiring be protected...6,7,8 or 10
feet?<

I'd have to say the answer is - partially kosher, but mostly born
again.

7.What is the minimum temp variance needed to trip a passive infrared
motion detector...1,2,3 or 4 degrees?<

InfraRED? RED? Excuse me, who are you calling red? I'm PINK!

8.In a 12 volt system, what voltage should be read across a closed
switch with a 6k ohm resistor?<

The answer will appear shortly. If the answer doesn't appear in the
next 5 seconds please hit the refresh button and you will be redirected
to the appropriate page.

 

[petem]

Hey I am French Canadian,trying to type English,how can I in any way try to
be a typist either..

 

[petem]

db Db dB what ever!

I was just pointing to the fellow that your answer was right and if he
didn't knew about decibels and that they can be expressed by Db or db or
what ever,the good answer was B

MAN!!!!

 

[petem]

I do not agree and this link will say the same

http://www.answers.com/topic/resistor

a resistor is limiting current not voltage