PDA

View Full Version : Exam Question


wolfen
10-12-2008, 06:42 PM
What Temp. increase above normal temp. could indicate scale formation .
A. 8F C.5F
B. 3F D. 10F
Brian_UK
10-12-2008, 06:58 PM
I don't know, how many guesses do we get.

Providing a bit more information and perhaps a short introduction of yourself might improve the chance of a sensible answer.
nh3wizard
10-12-2008, 07:20 PM
You get 3 wrong guess's, the 4th would be right.
eggs
10-12-2008, 08:24 PM
Time for my new toy again......

Google (http://letmegooglethatforyou.com/?q=What+Temp.+increase+above+normal+temp.+could+indicate+scale+formation+.)
wolfen
11-12-2008, 06:59 AM
Forget It.
ChillyWilley
11-12-2008, 07:46 AM
What increase above normal condenser temperature could indicate scale formation?
a. 8°F c. 10°F
b. 3°F d. 5°F

ANSWER: B
cesarnino
11-12-2008, 02:54 PM
i guess c.10
wolfen
11-12-2008, 03:02 PM
Thank You ChillyWilley. I`m facing my Red Seal Nj Refrigeration License and I`m walking in blind as to whats on the test. With the blue seal i had a general idea what they would be looking for. So any help is appreciated. I thought C. 10F too,but,i think B. 3F is the correct answer. Thanks
Argus
11-12-2008, 03:28 PM
.


Incredible.


.
p_p
12-12-2008, 03:13 PM
So whats the answer then?

PP
superswill
12-12-2008, 03:34 PM
iam still stuck on the question!!
US Iceman
12-12-2008, 03:40 PM
What Temp. increase above normal temp. could indicate scale formation .
A. 8F C.5F
B. 3F D. 10F


I'm sorry this is just a stupid question. No disrespect to the poster. My comment is directed towards whoever wrote that question.:(

Scale formation depends on the solubility of the minerals in the water + the temperature. Therefore, there could be several answers, but there is not enough information to specify which temperature is correct.

Obviously, whoever wrote the question had an answer in mind and it would be a good question if more information was presented.
frank
12-12-2008, 07:30 PM
Scale formation depends on the solubility of the minerals in the water + the temperature. Therefore, there could be several answers, but there is not enough information to specify which temperature is correct.

And of course, the Reynolds Number, i.e. internal roughness of the pipe/tub, also has a part to play in the time taken for the build up
Brian_UK
12-12-2008, 10:36 PM
My point with my first answer.

It is assumed by one and all that he is asking about a cooling water system but we still don't know for sure.
US Iceman
13-12-2008, 12:11 AM
You are right Brian. I made the assumption he was talking about a water-cooled system. It might very well be an air-cooled condenser with a water spray on it for we know right now.:rolleyes:
Harrison
13-12-2008, 11:31 PM
any temp above normal would indicate scale formation yes? seems like a trick question, ie if normaly you see temp x then you see temp x + 3f then youve got something reducing your heat transfer (assumiong everthing else is equal) which could be scale and seeing as the question asks about scale then......
it must be B!
nike123
14-12-2008, 12:11 AM
I would say all 4 are correct answers an should be ticked.
wambat
14-12-2008, 12:12 AM
49. What increase above normal condenser temperature could indicate scale formation?
a. 8°F c. 10°F
b. 3°F d. 5°F

ANSWER: B
see http://pastie.org/304474.txt
wolfen
15-12-2008, 11:37 PM
Sorry i wasn`t more clear with my question. I was talking about a chiller. Trane.
The state of new jersey has there own answers for things. It doen`t even have to be right. It`s just what they want.
Wednesday is my day. I think i`m going to do alright.
Wish me luck. This is just to meet state requirements.
I found the same pastie site and it helped out. All NJ questions.
Thanks