Skills and Trades

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Match the rack system components in the second column with their function in the first column. A. ... Started by Shelles	1 Replies 65 Views	Jul 26, 2018 by DHRUVSHAH
Defrost on a medium temperature case is normally accomplished: A) By leaving the case fans ... Started by daltonest1984	3 Replies 37 Views	Jul 26, 2018 by leannegxo
Match the system characteristics in the first column to the type of heat reclaim system in the ... Started by jho37	1 Replies 146 Views	Jul 26, 2018 by CharlieArnold
The airflow on a single deck coffin style open display case: A) Is all around the product. B) Is ... Started by a0266361136	1 Replies 104 Views	Jul 26, 2018 by lucas dlamini
When troubleshooting single phase compressor motors, it is important that the technician: A) ... Started by olgavictoria	1 Replies 68 Views	Jul 26, 2018 by Cnarkel
The steam grid humidifier works by A) Boiling water in a pan to steam B) Passing air over a ... Started by nevelica	3 Replies 60 Views	Jul 26, 2018 by Brummell1998
The economizer on a commercial packaged air conditioning system A) Limits the operating cycles of ... Started by j.rubin	1 Replies 30 Views	Jul 26, 2018 by abro1885
What is the function of an energy recovery unit? A) To recover energy used to cool electric ... Started by 809779	1 Replies 36 Views	Jul 26, 2018 by SomethingSomething
Installation clearances for rooftop units are required A) to insure that the weight of the unit ... Started by tingc95	1 Replies 39 Views	Jul 26, 2018 by ashely1112
Which ice has the finest texture? A) Flake ice B) Cubed ice C) Crushed ice D) Shaved ... Started by fbq8i	3 Replies 46 Views	Jul 26, 2018 by popopong
Why must the roof curb be installed square to the roof relative to the roof joists? A) To prevent ... Started by 809779	1 Replies 129 Views	Jul 26, 2018 by sierramartinez
To insure that the rafters or joists do not interfere with installation of the plenums on a curb ... Started by anshika	1 Replies 107 Views	Jul 26, 2018 by huda
The core of a large multistory high rise building consists of A) the main floors B) the areas ... Started by @Brianna17	1 Replies 45 Views	Jul 26, 2018 by meryzewe
The perimeter of a large multistory high rise building consists of A) the interior areas B) the ... Started by burton19126	3 Replies 183 Views	Jul 26, 2018 by vboyd24
In perimeter applications using the variable-air-volume system, the primary air handler provides ... Started by jlmhmf	1 Replies 40 Views	Jul 26, 2018 by Mollythedog
Which of the following statements is true regarding the energy-recovery wheel? A) The ... Started by bucstennis@aim.com	1 Replies 19 Views	Jul 26, 2018 by b614102004
How does an energy recovery wheel improve system efficiency? A) by moving some of the system ... Started by frankwu	1 Replies 44 Views	Jul 26, 2018 by Ksanderson1296
Control valves used for water coils are typically A) 4-way valves B) 3-way valves C) 2-way ... Started by bobthebuilder	3 Replies 234 Views	Jul 26, 2018 by janeli1
Select possible cause of an iced up evaporator on a commercial freezer. You may choose more than ... Started by ghost!	1 Replies 27 Views	Jul 26, 2018 by coyin
If a technician needs to check the refrigerant pressures on a system with a small charge: A) A ... Started by mspears3	1 Replies 28 Views	Jul 26, 2018 by frankwu0507
What effect do non-condensable gasses have on system performance? A) Non-condensables do not ... Started by RYAN BANYAN	1 Replies 39 Views	Jul 26, 2018 by babybsemail
What type of fuses should be used for overcurrent protection of air conditioning equipment circuits? ... Started by magmichele12	3 Replies 53 Views	Jul 26, 2018 by blakeserpa
In order to leak test a low pressure chiller, the chiller pressure A) chiller pressure must be ... Started by laurencescou	1 Replies 58 Views	Jul 26, 2018 by 6ana001
Define predictive maintenance. A) Performing maintenance and testing whenever the system quits ... Started by fasfsadfdsfa	1 Replies 51 Views	Jul 26, 2018 by Silverbeard98
Define planned maintenance. A) Performing maintenance and testing based on a regular schedule B) ... Started by a0266361136	1 Replies 32 Views	Jul 26, 2018 by jonathanballen97