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[email protected] August 31st 05 08:45 AM

Len,

Thanks for your advice regarding the calculator. I found that the
various questions are constructed to be answered correctly simply by
using vector graphical methods, long division, and approximation of
inputs for fast figuring.

The Eternal Squire


Roy Lewallen August 31st 05 09:22 AM

wrote:
Oops, one other thing I forgot to mention:

Q = XL / XR

The Eternal Squire


Two problems.

1. It's XL / R. There's no such thing as XR, in this context anyway.
2. Q = XL / R only when the R and L are in series. The Q of a parallel
R-L is R / XL.

You can remember those by using a little thought. The Q of an inductor
is highest if it has zero series resistance or if it has infinite shunt
resistance. Conversely, if you put a very large resistor in series with
an inductor, you won't be able to distinguish the circuit from just the
resistor. So the Q will be very low. In the parallel case, a low value
of resistor will make the inductor become insignificant, trashing the Q.

Good luck with your exam!

Roy Lewallen, W7EL

[email protected] September 11th 05 06:17 AM

I GOT IT! I GOT IT! I GOT IT!

Thanks for all your help! I just wrote the exam with a 92% pass.

The Eternal Squire


Mike Andrews September 11th 05 08:30 PM

wrote:
I GOT IT! I GOT IT! I GOT IT!


Thanks for all your help! I just wrote the exam with a 92% pass.


The Eternal Squire


Way cool! See you on HF, if this storm will ever go away.

Now go for your white belt -- if we're in the same organization.

--
Mike Andrews / Michael Fenwick Barony of Namron, Ansteorra
/ Amateur Extra radio operator W5EGO
Tired old music Laurel; web*******; SCAdian since AS XI

[email protected] September 12th 05 06:09 AM

Har Har. I actually flunked out of a Okinawan karate class when I was
16, it was taught by ex-marines. I was still a white belt after a year
because I was overweight.

The Eternal Squire



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