Study guides, Revision notes & Summaries

HVAC Final Exam Accurate Questions a unit is operating with a lower than normal suction pressure the probable cause is - ANSWER a restricted drier heat absorbed by the refrigerant in the evaporator is rejected at the - ANSWER condenser the components that divide the high and low side of the mechanical refrigeration cycle are the - ANSWER compressor discharge valve and metering device what is the purpose of purging the service manifold - ANSWER remove air moisture to transfer refriger...

HVAC Final Exam Review Questions & Answers(RATED A+) The four leading causes of death in the construction industry include electrical incidents,caught in or caught-between incidents, and___ - ANSWER Falls A sign that has a white background with a green panel with white lettering is a: - ANSWER Safety instruction sign To properly dispose of oily rags, they must be - ANSWER stored in a container designed for the purpose Keeping your work area clean and free of scraps or spills is refer...

HVAC final exam, unit 15 Accurate 100%(RATED A+) A control can be which of the following? - ANSWER All of the above An example of a power consuming device would be a(n) ____ while an example of a non-power consuming device would be a(n) _____. - ANSWER Light bulb, single-pole single-throw switch An electrical power consuming component. - ANSWER is also known as a load The line side of a switch is the. - ANSWER side the power source is connected to If an air conditioning system i...

HVAC Final Exam Complete Questions & Answers(GRADED A+) Air Conditioning - ANSWER A process that involves heating, cooling, humidifying, dehumidifying, and cleaning air. Boiler - ANSWER Consists of a vessel or tank like container where heat is produced from the combustion fuels such as natural gas, fuel oil, coal, or electric resistance heating used to produce hot water or steam. Condenser - ANSWER Refrigeration cycle component rejects heat into the atmosphere Evaporator - ANSWER Ref...

HVAC Final Exam Accurate Questions & Answers(Rated A+) What is an HVAC System? - ANSWER all the items needed to maintain thermal comfort within a space or group of spaces What are the four components of an HVAC system? - ANSWER Fans Pumps Compressor Evaporator What is a PTAC? - ANSWER Packaged Terminal Air Conditioner What is a PTHP? - ANSWER Packaged Terminal Heat Pump List the heat transfer equipment (3) - ANSWER Boiler Chiller Coil What is a zone? - ANSWER A zone is a s...

HVAC Final Quizlet 1, HVAC Final QuestioEvaporator Coil - ANSWER What component of an air conditioning system absorbs heat into the refrigerant Ventilation - ANSWER What does the V stand for in HVAC? Hot Surface Ignition - ANSWER What type of ignition is utilized by the furnaces in the shop? Air Conditioning - ANSWER What is the term for Refrigeration applied to the space temperature of a building? Electricity, L.P., Natural Gas - ANSWER What are the three fuels used in package heati...

HVAC Final Exam 7 Correct Questions & AnsAC is an electron flow that _________________________ - ANSWER alternates back and fourth The ______ is often used as a graphical representation of alternating current - ANSWER sine wave when a conductor rotates through one complete revolution it has generated _____ flow reversals - ANSWER two the __________of alternating current is the number of complete cycles that occur in a second. - ANSWER frequency Alternating current reaches a peak at _...

HVAC final exam, unit 16 Completely ANA ___ reacts to stop, start, or modulate the flow of water, air, or refrigerant to the system or conditioned space - ANSWER Controlled device All control systems can be subdivided into ____, no matter how many controls there are. - ANSWER Control loops _______ control systems were used before electronics. - ANSWER Pneumatic Pneumatic controls must have a permanent air supply that is ______ - ANSWER clean and dry Most system compressors provide __...

HVAC Final Exam 5 ACCURATE Questions and Answers(RATED A+) A load is an electrical device that _____________________________ - ANSWER uses electricity to do useful work A disconnect switch is used to __________ - ANSWER open and close the main power source to a piece of equipment which of the following are not components of a contactor or relay? - ANSWER thermal element Loads are electrical devices that consume electricity to do _______________ work - ANSWER useful _____ are devic...

HVAC Accurate Questions & Answers(Rated A+) Heating - ANSWER The process of raising the temperature of a space