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Air Conditioning Certification Exam (Exam Code A-02) Questions With Accurate Answers. Heat which causes a change in temperature of a substance is called; - answersensible heat. Heat which causes a change in state of a material without a change in temperature is called; - answerlatent heat. Heat which is added to a vapor after the change of state occurs is called; - answersuperheat. Heat can travel by; - answerconduction, convection, radiation. The movement of heat by way of fluid (or air...

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10 pages

Written in 2023/2024

Grade A+

TheStar

Air Conditioning Certification Questions and Verified Answers Pack | Passed | A+

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4 items

Passit

10 lbs. of refrigerant pass through a water cooled condenser and gives up 20 Btu's of heat per lbs. At the same time, 10 lbs. of water passes through with an entering temperature of 80 F. The temperature of the water leaving the condenser is; - ANSWER 100 F The heat removed from the refrigerant by the condenser is; - ANSWER both sensible and latent heat. A condenser that is used in a low ambient temperature conditions must have a method of maintaining a workable head pressure. This can be...

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14 pages

Written in 2023/2024

Grade A+

KenAli

The first function of the condenser is to _______________ the refrigerant before condensation can occur. - ANSWER de-superheat Low pressure low temperature vapor is the state of the refrigerant in the; - ANSWER suction line Frost on the suction line indicates: - ANSWER that the line temp is below dew point and below 32F.

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11 pages

Written in 2023/2024

Grade A+

KenAli

when using an hfc134a refrigerant recovery machine after completing the first recovery process how long must you wait, then check the machines gauges for a rise in pressure above vacuum which would indicate that the system still contains some refrigerant - ANSWER 5 minutes what can happen if refrigerant storage tank is overfilled - ANSWER tank may explode

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4 pages

Written in 2023/2024

Grade A+

KenAli

In a direct expansion (DX) evaporator system, refrigerant leaves the evaporator as ______. - ANSWER superheated vapor When setting a high pressure cut-out on a R-22 system which has an air cooled condenser, the setting should be approximately _______. - ANSWER 395 psig. The cutout must be set approximately 50% above the operating pressur

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9 pages

Written in 2023/2024

Grade A+

KenAli

An increase in head pressure causes ___________ refrigerant to flow through the capillary tube. - ANSWER More Which of the following represent the right order of the functions of a condenser? - ANSWER De-superheats, condenses, sub cools

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7 pages

Written in 2023/2024

Grade A+

KenAli

After a system has been opened and the compressor changed, the service technician must... - ANSWER Replace the filter drier, leak check, evacuate, and charge The evaporator.... - ANSWER Transfers heat from the refrigerated space to the refrigerant Liquid slugging is... - ANSWER Liquid refrigerant in the compressor clearance space What is the generally accepted range for evaporator air flow in CFM's per ton of residential air conditioning? - ANSWER 350 to 450

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5 pages

Written in 2023/2024

Grade A+

KenAli

More - ANSWER An increase in head pressure causes ___________ refrigerant to flow through the capillary tube. De-superheats, condenses, sub cools - ANSWER Which of the following represent the right order of the functions of a condenser? Convection - ANSWER The movement of heat by the way of fluid (or air) is called..

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6 pages

Written in 2023/2024

Grade A+

KenAli

Auto Expansion Valve - ANSWER ______ ______________ _________ maintains constant evaporative pressure evaporative, spring, sensor bulb - ANSWER Thermo Expansion valve (TXV) has 3 pressures _____________________, _________________, and ___________________ lower than valve body - ANSWER When mounting TXV sensor bulb, you do not install it _________________________________________________ . warmer - ANSWER In an air conditioning system that uses TXV, the temp of the evaporator outlet will us...

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11 pages

Written in 2023/2024

Grade A+

KenAli

AIR CONDITIONING CERTIFICATION EXAM QUESTIONS WITH AUTHENTICATE ANSWERS GRADED A+ 100% 2024

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8 pages

Written in 2023/2024

Grade A+

Elitaa

What is the movement of heat through space called? : Radiation A refrigerant release heat when : It condenses Why is it desirable for refrigerant in the suction line to be slightly superheated? : To insure liquid refrigerant does not enter the compressor A 30 pound cylinder of reclaimed R-22 refrigerant has been stored over night at 70 degrees F. What should be the approximate pressure in the cylinder? : 121 psig 2 14.7 psia( pouds per square inch absolute) is : Approximately 0 PSIG ...

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17 pages

Written in 2023/2024

Grade A+

Passit

Heat which causes a change in temperature of a substance is called; : sensible heat. Heat which causes a change in state of a material without a change in temperature is called; : latent heat. Heat which is added to a vapor after the change of state occurs is called; : superheat. Heat can travel by; : conduction, convection, radiation. The movement of heat by way of fluid (or air) is called; 2 : convection . The movement of heat by direct contact is called; : conduction . The standa...

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24 pages

Written in 2023/2024

Grade A+

Passit

sensible heat : Heat that causes change in temperature of a substance latent heat : Heat that is added with out a rise in temperature super heat : Heat added to refrigerant in vapor state after evaporation process is involute spirals : Scroll compressor moves refrigerant by means of convection : movement of heat by way of fluid or air 2 conduction : movement of heat by way of solid BTU : Standard unit for measuring heat Condensor : refrigerant gives up heat in the liquid sluggin...

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20 pages

Written in 2023/2024

Grade A+

Passit

A faulty condenser fan motor on an air conditioning system will cause these symptoms..... : High suction pressure and high discharge pressure When connecting copper to steel the recommended brazing filler alloy is a... : 45 percent silver alloy A partially iced over evaporator can be caused by... : An undercharge Heat added to the refrigerant in vapor state after the evaporation process is called.... : Superheat 2 Why must refrigerant in the suction line be slightly warmer than the satu...

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9 pages

Written in 2023/2024

Grade A+

Passit

Air Conditioning Certification Bundled Exams with complete solution

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10 items

ACADEMICMATERIALS

A faulty condenser fan motor on an air conditioning system will cause these symptoms..... - High suction pressure and high discharge pressure When connecting copper to steel the recommended brazing filler alloy is a... - 45 percent silver alloy A partially iced over evaporator can be caused by... - An undercharge Heat added to the refrigerant in vapor state after the evaporation process is called.... - Superheat Why must refrigerant in the suction line be slightly warmer than the saturatio...

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3 pages

Written in 2023/2024

Grade A+

ACADEMICMATERIALS

Heat which causes a change in temperature of a substance is called; - sensible heat. Heat which causes a change in state of a material without a change in temperature is called; - latent heat. Heat which is added to a vapor after the change of state occurs is called; - superheat. Heat can travel by; - conduction, convection, radiation. The movement of heat by way of fluid (or air) is called; - convection . The movement of heat by direct contact is called; - conduction . The standard unit ...

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12 pages

Written in 2023/2024

Grade A+

ACADEMICMATERIALS

sensible heat - Heat that causes change in temperature of a substance latent heat - Heat that is added with out a rise in temperature super heat - Heat added to refrigerant in vapor state after evaporation process is involute spirals - Scroll compressor moves refrigerant by means of convection - movement of heat by way of fluid or air conduction - movement of heat by way of solid BTU - Standard unit for measuring heat Condensor - refrigerant gives up heat in the liquid slugging - refrige...

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9 pages

Written in 2023/2024

Grade A+

ACADEMICMATERIALS

Heat that causes change in temperature of a substance - Answer-sensible heat Heat that is added with out a rise in temperature - Answer-latent heat Heat added to refrigerant in vapor state after evaporation process is - Answer-super heat Scroll compressor moves refrigerant by means of - Answer-involute spirals movement of heat by way of fluid or air - Answer-convection movement of heat by way of solid - Answer-conduction Standard unit for measuring heat - Answer-BTU refrigerant gives up h...

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9 pages

Written in 2023/2024

Grade A+

ACADEMICMATERIALS