Skills and Trades

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The pointer on a dial type thermometer is moved by a: A) Volatile fluid. B) Lever which is moved ... Started by jilianpiloj	1 Replies 79 Views	Jul 26, 2018 by DHRUVSHAH
Which type thermometer can measure the temperature of a surface from a distance? A) Glass stem ... Started by jake	1 Replies 93 Views	Jul 26, 2018 by fromAlphatoOmega22
One disadvantage infrared thermometers is that they: A) Are only available in limited quantities ... Started by Mr.Thesaxman	3 Replies 54 Views	Jul 26, 2018 by Rilsmarie951
The earliest thermometers were based on: A) The expansion and contraction of a spiral piece of ... Started by Pineapplelove6	1 Replies 16 Views	Jul 26, 2018 by duke02
The second law of thermodynamics states that: A) All objects contain some energy. B) Heat ... Started by K@	1 Replies 45 Views	Jul 26, 2018 by Jevvish
The system capacity of an air conditioner with a fixed metering device: A) Increases when the ... Started by Charlie	1 Replies 34 Views	Jul 26, 2018 by Jody Vaughn
Campers being heated by a fire outside is an example of: A) Sublimation. B) Radiation. C) ... Started by Evvie72	3 Replies 43 Views	Jul 26, 2018 by Jody Vaughn
An R-134a TEV system is operating with a suction pressure of 22 psig and a suction line temperature ... Started by drink	1 Replies 122 Views	Jul 26, 2018 by welcom1000
An R22 refrigeration system requires a superheat of 8F. If the evaporator saturation pressure is 43 ... Started by saraeharris	1 Replies 46 Views	Jul 26, 2018 by Carliemb17
Which has a higher heat content, a 100F liquid or an equal mass of a 40 vapor? A) The heat ... Started by ENagel	1 Replies 88 Views	Jul 26, 2018 by kishoreddi
What happens to the temperature of boiling water once it starts to boil? A) The water temperature ... Started by penza	3 Replies 94 Views	Jul 26, 2018 by Eazy416
What is the advantage of balanced port TEVs? A) Balanced port valves can retain good control over ... Started by bobbie	1 Replies 106 Views	Jul 26, 2018 by kardosa007
The amount of heat required to change 1 pound of a substance 1F is called: A) Total heat. B) ... Started by naturalchemist	1 Replies 78 Views	Jul 26, 2018 by nikmaaacs
Calculate the amount of heat in BTUs required to change the temperature of 10 pounds of copper from ... Started by maegan_martin	1 Replies 66 Views	Jul 26, 2018 by zogaridan
Calculate the amount of heat required to change 5 pounds of 32 ice to water. A) No extra heat is ... Started by luvbio	3 Replies 76 Views	Jul 26, 2018 by randomguy133
Which of the following is not use high-temperature refrigeration application? A) Fresh meat ... Started by ghost!	1 Replies 64 Views	Jul 26, 2018 by vickyvicksss
Standard atmospheric pressure at sea level with a temperature of 59F is: A) 14.7 psig or 29.92 in ... Started by cnetterville	1 Replies 44 Views	Jul 26, 2018 by ally
Why is the main purpose of the fins on finned tube evaporators? A) Fins protect the coil from ... Started by sc00by25	1 Replies 91 Views	Jul 26, 2018 by dlook33
Compared to air conditioning evaporator coils, commercial refrigeration coils have: A) Materials ... Started by nummyann	3 Replies 126 Views	Jul 26, 2018 by sokh
Commercial refrigeration equipment for dry storage typically uses: A) Medium temperature ... Started by Frost2351	1 Replies 44 Views	Jul 26, 2018 by Bigfoot1984
Convert a reading of 18 inches Hg vacuum to psia. A) 18 in Hg + 30 = 48 psia (rounded) B) 30 - ... Started by acc299	1 Replies 60 Views	Jul 26, 2018 by shailee
Sensible cooling: A) Removes water from the air. B) Is an interesting theory that has not been ... Started by urbanoutfitters	1 Replies 16 Views	Jul 26, 2018 by adf223
Refrigerant enters as a saturated mixture and leaves as a: A) Superheated vapor. B) Cool vapor. ... Started by fnuegbu	3 Replies 44 Views	Jul 26, 2018 by diesoon
An HVACR technician takes a reading of 25 Hg. Which type of gauge is he using? A) He is using a ... Started by ahriuashd	1 Replies 47 Views	Jul 26, 2018 by sultansheikh
After compressing 2ft3 of gas at 50 psia and 300 R to 1 ft3 at 50 psia, the temperature of the gas ... Started by tuffie	1 Replies 47 Views	Jul 26, 2018 by kxciann