HELP!! Need answers for test!!!

I hate tests...

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

Attenuation is measured in dB.

Bob

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?

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

cent Resistor

Jim Rojas

ent Resistor

Jim Rojas

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

Bob

And db mean decibels...so B

"Robertm" a écrit dans le message de news: dnetof$8ph2$ snipped-for-privacy@news3.infoave.net...

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

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

"Robertm" a écrit dans le message de news: dneum7$8pri$ snipped-for-privacy@news3.infoave.net...

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

Bob

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

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

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

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

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

"Robertm" a écrit dans le message de news: dnf0vt$8qrp$ snipped-for-privacy@news3.infoave.net...

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!!!!

"Robertm" a écrit dans le message de news: dnf18d$8r1d$ snipped-for-privacy@news3.infoave.net...

I do not agree and this link will say the same

"Robertm" a écrit dans le message de news: dnf3hr$8ru3$ snipped-for-privacy@news3.infoave.net...