Skills and Trades

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Mechanical draft towers are categorized as: A) Induced-draft or forced-draft. B) Low-pressure or ... Started by Yi-Chen	1 Replies 98 Views	Jul 24, 2018 by aprice35067
PTAC units are: A) Partial trajectory air-conditioning units. B) Packaged terminal ... Started by ENagel	1 Replies 97 Views	Jul 24, 2018 by olivia_paige29
Where is a direct vent space heater installed? A) In an exterior wall B) In an interior wall C) ... Started by rlane42	3 Replies 76 Views	Jul 24, 2018 by af
A cooling tower with its fan located in the air stream leaving the tower, drawing the air through ... Started by newbem	1 Replies 43 Views	Jul 24, 2018 by ricroger
Kerosene space heaters use: A) Number 2 fuel oil. B) White gasoline. C) Number 1 fuel oil. D) ... Started by mwit1967	1 Replies 64 Views	Jul 24, 2018 by Koolkid240
Why do some gas furnaces NOT require an electrical power supply? A) No gas furnaces require ... Started by burton19126	1 Replies 57 Views	Jul 24, 2018 by Anna
A system operating with a high superheat and a high subcooling most likely has: A) An overfeeding ... Started by MGLQZ	3 Replies 16 Views	Jul 24, 2018 by aloop
How does a kerosene heater prepare its fuel for combustion? A) Oil is atomized using a ... Started by futuristic	1 Replies 30 Views	Jul 24, 2018 by b614102004
What is an advantage of a crossflow tower? A) Cross flow cooling towers have variable-pitch air ... Started by pane00	1 Replies 32 Views	Jul 24, 2018 by shayla
Compressor capacity can be controlled by: A) Voltage or current modulation. B) Discharge valve ... Started by jake	1 Replies 86 Views	Jul 24, 2018 by quynhmickitran
Cooling towers in which the water circulating in the tower is separate from the water circulating ... Started by piesebel	3 Replies 80 Views	Jul 24, 2018 by ASDFGJLO
The approximate heating value of propane is: A) 1,780 BTU per cubic foot. B) 1,000 BTU per cubic ... Started by Hungry!	1 Replies 79 Views	Jul 24, 2018 by kswal303
Why would the timer on a time-temperature defrost system reset? A) The defrost temperature is not ... Started by mmm	1 Replies 106 Views	Jul 24, 2018 by Andromeda18
The air filter should be checked: A) While collecting operational data. B) During the ... Started by PhilipSeeMore	1 Replies 11 Views	Jul 24, 2018 by ryhom
Many central system chillers use water-cooled condensers because: A) Water-cooled chillers take ... Started by bucstennis@aim.com	3 Replies 93 Views	Jul 24, 2018 by polinasid
Which type of electric space heater is often used in office and home settings for uniform room ... Started by luminitza	1 Replies 75 Views	Jul 24, 2018 by fur
Which of the following statements regarding cooling tower operations is correct? A) When the ... Started by washai	1 Replies 18 Views	Jul 24, 2018 by Dominic
Which type of space heater is generally the least expensive to purchase? A) Electric space heater ... Started by crobinson2013	1 Replies 90 Views	Jul 24, 2018 by xMRAZ
What is the purpose of a cooling tower? A) To reduce the temperature of cooling water by ... Started by EY67	3 Replies 99 Views	Jul 24, 2018 by dmurph1496
Very large air-conditioning loads are normally handled by: A) Rooftop packaged air conditioners. ... Started by renzo156	1 Replies 21 Views	Jul 24, 2018 by emsimon14
Which type of space heater is generally the easiest to maintain? A) Unvented gas space heater B) ... Started by shenderson6	1 Replies 65 Views	Jul 24, 2018 by isabelt_18
Heat absorbed by the water during evaporation is called: A) Specific heat. B) Sensible heat. C) ... Started by soccerdreamer_17	1 Replies 79 Views	Jul 24, 2018 by Ddddd
The diagnostic board on a system is flashing three short flashes, pausing, and then flashing two ... Started by meagbuch	3 Replies 86 Views	Jul 24, 2018 by miss.ashley
What part does heat play in combustion? A) Heat causes combustion to end. B) Heat plays no role ... Started by sabina	1 Replies 50 Views	Jul 24, 2018 by fur
Why must you cover the coils when testing the heat pump in warm weather? A) To prevent the heat ... Started by geodog55	1 Replies 44 Views	Jul 24, 2018 by anoriega3