Skills and Trades

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Why does oil slugging occur in a compressor? A) Oil slugging is caused by a sudden return of ... Started by jasdeep_brar	1 Replies 12 Views	Jul 27, 2018 by batool
When calculating the specific gravity of gas, the substance used as the comparative constant in the ... Started by Mollykgkg	3 Replies 17 Views	Jul 27, 2018 by AaaA
What is the primary advantage of a remote air cooled condenser on an ice machine? A) The ... Started by waynest	1 Replies 15 Views	Jul 27, 2018 by Awesome
The three types of air cooled condenser coil construction found on residential air conditioning ... Started by HCHenry	1 Replies 43 Views	Jul 27, 2018 by Koolkid240
One advantage of glass stem thermometers is that they are: A) Generally easier to read than dial ... Started by ENagel	1 Replies 121 Views	Jul 27, 2018 by princessflame2016
Which has a higher heat intensity, a 100F liquid or an equal mass of a 40 vapor? A) The heat ... Started by storky111	3 Replies 75 Views	Jul 27, 2018 by joshbk44
When applied to systems with air cooled condensers, what is the lowest outside ambient temperature ... Started by 123654777	1 Replies 16 Views	Jul 27, 2018 by akemokai
An overfeeding metering device can cause? A) Low suction pressure, low superheat, and low ... Started by robinn137	1 Replies 57 Views	Jul 27, 2018 by leannegxo
Commercial refrigeration equipment for ice cream storage typically uses: A) High temperature ... Started by pepyto	1 Replies 59 Views	Jul 27, 2018 by jrpg123456
For which of the following is the last part of the evaporator used? A) Raise the liquid ... Started by panfilo	3 Replies 59 Views	Jul 27, 2018 by Chocorrol77
The ideal gas law is accurate for: A) Superheated gas. B) Saturated gas. C) Any mixture of gas ... Started by lilldybug07	1 Replies 13 Views	Jul 27, 2018 by wshriver
What do the rails on a ladder diagram represent? A) The circuit loads B) The individual circuits ... Started by shofmannx20	1 Replies 42 Views	Jul 27, 2018 by marict
How does a hot gas defrost system work? A) Hot compressor discharge gas is routed to the ... Started by jake	1 Replies 24 Views	Jul 27, 2018 by abctaiwan
What does it mean for a condenser and evaporator coil to be an AHRI Match? A) Both components ... Started by bobypop	3 Replies 17 Views	Jul 27, 2018 by ririgirl15
It is possible for the same air conditioner to have a different capacity and efficiency with each ... Started by saraeharris	1 Replies 11 Views	Jul 27, 2018 by shaquita
Where can information regarding first aid be found in the MSDS? A) Section 1 B) Section 2 C) ... Started by bclement10	1 Replies 42 Views	Jul 27, 2018 by yasmina
Refrigerants absorb heat: A) By condensing from a vapor to a liquid. B) By rearranging their ... Started by Beheh	1 Replies 29 Views	Jul 27, 2018 by jgranad15
A fluorinated refrigerant whose number starts with a 5 is: A) Azeotropic. B) A compound. C) ... Started by FButt	3 Replies 61 Views	Jul 27, 2018 by Viet Thy
If an open flame is near a type 3 rating, the refrigerant: A) Will condense. B) Will slowly burn. ... Started by chandani	1 Replies 23 Views	Jul 27, 2018 by Liddy
What is the maximum reading on a typical R410a high pressure gauge? A) 800 psig B) 500 psig C) ... Started by skymedlock	1 Replies 29 Views	Jul 27, 2018 by hramirez205
The lines inside the saturation curve that start at the bottom and extend upward toward the critical ... Started by humphriesbr@me.com	1 Replies 17 Views	Jul 27, 2018 by Kaytorgator
How is HDPE pipe most commonly joined? A) Sealant B) Force C) Heat fusion D) ... Started by Mr. Wonderful	3 Replies 17 Views	Jul 27, 2018 by mathjasmine
Static electricity is: A) Created by splitting atoms and releasing all the electrons in the atom. ... Started by colton	1 Replies 14 Views	Jul 27, 2018 by pallen55
The most accurate analog gauges available on gauge manifolds in the HVACR industry are: A) 0.5 of ... Started by Deast7027	1 Replies 24 Views	Jul 27, 2018 by l.stuut
A stair with a total rise of 7'-7 and a total run of 9'-0, with the stairwell header used as the ... Started by frankwu	1 Replies 13 Views	Jul 27, 2018 by elizabethrperez