ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals

Topic Options
Rate This Topic
#92550 - 03/22/05 08:05 PM help with calculations on test
knopp Offline
Junior Member
Registered: 06/26/04
Posts: 2
Loc: richmond, va
i have taken the master electrician test twice and both times i have missed by 2 incorrect answers. i feel like my areas to improve on are the demand factors and motor calculations. im going to try to retest asap while some of the questions are still fresh at memory. where might i get some sample practice calculations that could explain these better. one of the questions that i had incorrect was what is a resistor with with a single orange stripe? what part of the code might this be related to. thanks for any help you may be able to provide.
Top
2017 / 2014 NEC & Related Books and Study Guides
#92551 - 03/22/05 08:58 PM Re: help with calculations on test
gfretwell Online   content


Member
Registered: 07/20/04
Posts: 9039
Loc: Estero,Fl,usa
"what is a resistor with with a single orange stripe? "


Missing 2 stripes?
_________________________
Greg Fretwell
Top
#92552 - 03/23/05 06:13 PM Re: help with calculations on test
George Little Offline
Member
Registered: 01/18/04
Posts: 1488
Loc: Michigan USA
Are ou sure it was a resistor and not a diode? A diode has a single band on one end sometimes but it's usually black.

What color was the "resistor"?

[This message has been edited by George Little (edited 03-23-2005).]
_________________________
George Little
Top
#92553 - 03/23/05 06:46 PM Re: help with calculations on test
gfretwell Online   content


Member
Registered: 07/20/04
Posts: 9039
Loc: Estero,Fl,usa
Resistors need 3 colors to identify them. There are 2 significant digits and a multiplier. BBROYGBVGW = 0-9
If you find some pre WWII resistors you may see a body color (1st digit) a ring (2d digit) and a dot (multiplier). It has just been 3 bands for the last half of the last century. You may also see a 4th bandthat designates tolerance.
_________________________
Greg Fretwell
Top
#92554 - 03/23/05 07:09 PM Re: help with calculations on test
George Little Offline
Member
Registered: 01/18/04
Posts: 1488
Loc: Michigan USA
Greg- Your revealing your age there buddy-
Do you remember the little diddy that went with "BBROYGBVGW"?

[This message has been edited by George Little (edited 03-23-2005).]
_________________________
George Little
Top
#92555 - 03/23/05 08:29 PM Re: help with calculations on test
gfretwell Online   content


Member
Registered: 07/20/04
Posts: 9039
Loc: Estero,Fl,usa
Yup the politically correct one and 2 levels of non-PC diddies (the worst one clearing up the confusion about the "0" color)
"bad boys rape our young girls but violet gives willingly" is the moderately unPC one.

I may still have a couple of those roaring 20s resistors with the solid body and dot in my junk box.
_________________________
Greg Fretwell
Top
#92556 - 03/25/05 01:33 PM Re: help with calculations on test
gfretwell Online   content


Member
Registered: 07/20/04
Posts: 9039
Loc: Estero,Fl,usa
This is a moldy oldie.
A half century old 50k resistor
Green body "5", black band "0" and orange dot "3 zeros" = 50,000k
It measures around 52k, not bad for a 50 year old part that was +/- 20% new http://members.aol.com/gfretwell/resistor.jpg

[This message has been edited by gfretwell (edited 03-25-2005).]
_________________________
Greg Fretwell
Top

Member Spotlight
Member Since: 07/05/02
Posts: 8211
New in the Gallery:
SE cable question
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box


Who's Online
1 registered (gfretwell), 90 Guests and 11 Spiders online.
Key: Admin, Global Mod, Mod
 
New in the Gallery:
SE cable question
 
Top Posters (30 Days)
Admin 49
HotLine1 43
gfretwell 18
Ruben Rocha 12
Trumpy 9
 
Newest Members
Freecrowder, clee512, Jdscott2005, FAIZAN, Regitest2

ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals