The purge cycle - Study guides, Class notes & Summaries

Define 'eating disorder' as completely as possible. correct answers Eating disorder: a condition that involves an unhealthy degree of concern about body weight and shape and that may lead to efforts to control weight by unhealthy means. Eating disorders are not _________, but rather psychological problems. correct answers diseases Define 'Anorexia Nervosa'. (Question on the exam) correct answers An eating disorder characterized by self-starvation and excessive weight loss. Define '...

What do R-11 and R-123 refrigerants have in common? A. They are oxygen depleting B. They are Class I and II substances as defined by the EPA C. Both A and B D. Neither A nor B - ANSWER C. Both A and B What is the required evacuation level for recovering refrigerant from a low-pressure appliance with a recovery machine manufactured before November 15, 1993? A. 0 psig B. 4" Hg C. 10 A Hg D. 25" Hg - ANSWER D. 25" Hg How is frost best removed from a sight glass? A. reverse ...

What do R-11 and R-123 refrigerants have in common? A. They are oxygen depleting B. They are Class I and II substances as defined by the EPA C. Both A and B D. Neither A nor B - ANSWER C. Both A and B What is the required evacuation level for recovering refrigerant from a low-pressure appliance with a recovery machine manufactured before November 15, 1993? A. 0 psig B. 4" Hg C. 10 A Hg D. 25" Hg - ANSWER D. 25" Hg How is frost best removed from a sight glass? A. reverse ...

Boiler License Low Pressure Exam Questions with Correct Answers A welded repair is allowed on the pressure retaining area of a boiler or pressure vessel - Answer-True An OS&Y valve offers the least resistance to flow - Answer-True What chemical prevents pitting - Answer-Sodium Sulfite A rotary cup burner atomizes fuel - Answer-by means of a spinning cup/high velocity air Retubed or new boilers are cleaned with - Answer-Alkaline Detergent Where does fuel atomize - Answer-At the burne...

What do R-11 and R-123 refrigerants have in common? A. They are oxygen depleting B. They are Class I and II substances as defined by the EPA C. Both A and B D. Neither A nor B - ANSWER C. Both A and B What is the required evacuation level for recovering refrigerant from a low-pressure appliance with a recovery machine manufactured before November 15, 1993? A. 0 psig B. 4" Hg C. 10 A Hg D. 25" Hg - ANSWER D. 25" Hg How is frost best removed from a sight glass? A. reverse ...

Boiler License Test Latest Updates Natural draft is produced by? - difference in temperature outside chimney from inside chimney If a draft fan is located between the boiler and chimney, what type of draft system is it? - Induced draft boiler fittings are important for: - safety only thermostatic traps remove air and cool condensate: true or false - True The main purpose of testing a safety value is to: - make sure valve operates freely when testing a safety valve by hand, you ...

Natural Gas Furnace - ANSWER Heating Method most commonly used as a heat source in cold climates Ultraviolet light - ANSWER Device used to maintain indoor air quality transfer heat from the air to the refrigerant - ANSWER purpose of evaporator in refrigerant cycle refrigerant is warmer than the outdoor air - ANSWER heat can be transferred from a refrigerant to the outdoors on a hot day because provides pressure drop - ANSWER expansion device in mechanical refrigeration system an e...

HVAC Pretest BOMA ACTUAL EXAM| TEST PREPARATION QUESTIONS WITH VERIFIED SOLUTIONS| LATEST AND COMPLETE Two basic categories of chillers are the ___. a. Compression cycle and absorption b. purge and absorption c. absorption and lithium bromide d. purge and lithium bromide - ANSWER-a. Compression cycle and absorption The five requirements for comfort are proper temperature, humidity, filtration, _____, and ventilation. a. circulation b. velocity c. . d. none of the above - ANSWER-a. circ...

Boiler License Test Questions with Correct Answers Natural draft is produced by? - Answer-difference in temperature outside chimney from inside chimney If a draft fan is located between the boiler and chimney, what type of draft system is it? - Answer-Induced draft boiler fittings are important for: - Answer-safety only thermostatic traps remove air and cool condensate: true or false - Answer-True The main purpose of testing a safety value is to: - Answer-make sure valve operates f...

Intro to hvac questions and answers already passed Which of these heating methods is most commonly used as a heat source in cold climates? Natural gas furnaces Which of the following is a device used to maintain indoor air quality? Ultraviolet light The purpose of an evaporator in a refrigeration cycle is to transfer heat from the air to the refrigerant Heat can be transferred from a refrigerant to the outdoors on a hot day because the refrigerant is warmer than the out door ai...