ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat Box
Recent Posts
From an outsider- How does tipping work?
by HotLine1 - 12/04/20 01:09 PM
Thought this was funny
by HotLine1 - 12/04/20 12:55 PM
Happy Thanksgiving
by Trumpy - 12/02/20 04:11 AM
Where is Everyone?
by Trumpy - 12/02/20 03:51 AM
What does your work place look like?
by Trumpy - 12/02/20 03:42 AM
New in the Gallery:
Facebook follies, bad wiring
FPE in Germany pt.2
Who's Online Now
1 registered members (HotLine1), 23 guests, and 8 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
help with calculations on test #92550 03/22/05 11:05 PM
Joined: Jun 2004
Posts: 2
K
knopp Offline OP
Junior Member
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.

2017 / 2014 NEC & Related Books and Study Guides
Re: help with calculations on test #92551 03/22/05 11:58 PM
Joined: Jul 2004
Posts: 9,547
G
gfretwell Offline
Member
"what is a resistor with with a single orange stripe? "


Missing 2 stripes?


Greg Fretwell
Re: help with calculations on test #92552 03/23/05 09:13 PM
Joined: Jan 2004
Posts: 1,507
G
George Little Offline
Member
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
Re: help with calculations on test #92553 03/23/05 09:46 PM
Joined: Jul 2004
Posts: 9,547
G
gfretwell Offline
Member
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
Re: help with calculations on test #92554 03/23/05 10:09 PM
Joined: Jan 2004
Posts: 1,507
G
George Little Offline
Member
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
Re: help with calculations on test #92555 03/23/05 11:29 PM
Joined: Jul 2004
Posts: 9,547
G
gfretwell Offline
Member
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
Re: help with calculations on test #92556 03/25/05 04:33 PM
Joined: Jul 2004
Posts: 9,547
G
gfretwell Offline
Member
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

Featured:

2020 National Electrical Code
2020 National Electrical
Code (NEC)

* * * * * * *

2020 Master Electrician Exam Preparation Combos
2020 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
SafetyWired
SafetyWired
Pa, USA
Posts: 44
Joined: July 2013
Show All Member Profiles 
Top Posters(30 Days)
Trumpy 20
Popular Topics(Views)
272,228 Are you busy
206,116 Re: Forum
194,105 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.3