What are air compressors - Study guides, Class notes & Summaries

HVAC FINAL EXAM QUESTIONS AND ANSWERS ALL CORRECT.docx Which of the following would have the greatest effect on the heat content of the refrigerant? A)The refrigerant's humidity B)The refrigerant's state C)The refrigerant's temperature D)The refrigerant's pressure - Correct Answer B) The refrigerant's state A mechanical refrigeration system cools a room by: - Removing heat from the room. The four types of cooling mechanisms are: - Evaporative, Thermoelectric, Absorption, Mecha...

NFPA-99: Practice Test Questions with Verified Solutions Under which of these conditions shall the instrument Air Reserve header cylinders be permitted to be stored with the instrument air compressor? A) the mechanical equipment room does not contain a boiler. B) the medical air compressors are in the same room. C) the only motor-driven machinery in the room is for instrument air equipment. D) the room is secured with lockable doors. C) The only motor-driven machinery in the room is ...

NATE Air Conditioning and Heat Pump Exam Questions and Answers Updated (GRADED A+) The maximum sensible cooling capacity of a heat pump should be within ______% of the calculated sensible heat gain of a structure with a large heating load. - ANSWER- +25% The combined output of a heatpump and its auxiliary heat should not exceed the calculated heat loss of a home by more than ____%. - ANSWER-15% What amount of auxiliary electronic heat is needed when the output of a heat pump on a design d...

FDNY A-35 Test Questions with Answers Compression Chamber operation - Answer-Air is compressed in compression chamber which consists of a PISTON inside a CYLINDER. Piston moves up and down. When piston moves down -->draws air into cylinder, through INTAKE VALVE (valve automatically opens when piston moves down). When piston moves up-->air is compressed (intake vale automatically closes to avoid air escaping from cylinder). Air Reciever Operation - Answer-When air pressure reach...

NFPA-99: Practice Test Questions and Correct Answers 2024, With Complete Verified Solution. Under which of these conditions shall the instrument Air Reserve header cylinders be permitted to be stored with the instrument air compressor? A) the mechanical equipment room does not contain a boiler. B) the medical air compressors are in the same room. C) the only motor-driven machinery in the room is for instrument air equipment. D) the room is secured with lockable doors. C) The only motor-d...

AVSC 3330 Exam | Questions and Answers Axial-flow compressors are less fuel efficient than Centrifugal-flow compressors. False The core of the gas turbine that generates expanding gases required to produce thrust is known as? The Gas Generator Why is the core of the turbine engine known as the Gas Generator? It generates the expanding gases required to produce thrust What do Gas turbine engines share jet propulsion principles with? Party balloons that have been inflated and released What is t...

What is the CCS (common core system) Provides a common computing network and data exchange system for the majority of the airplane systems What are the main components of the CCS (common core system) Common computing resource, left and right When power is applied to the aircraft, which CCR starts first? How long? When will the opposite one start and what indicates both online Left starts first, takes 2-3 min, the opposite starts up after the L starts and a power source other than battery. ...

BECC MOD 7 QUESTIONS AND ANSWERS WITH CERTIFED SOLUTIONS When starting up the Hydraulic System, the ....... must be used. EOSS Hydraulic systems are used to operate the ....... STEERING GEAR If you apply 100 pounds of force to a 1 inch piston, the 2 inch output piston would have ....... pounds of force. 200 Hydraulic system pressure is maintained by the ....... valve UNLOADING Which component is used to convert fluid power energy to mechanical motion? ACTUATOR The centrifugal type LP ai...

HVAC pre-test questions and answers graded A+ Two basic categories of chillers are Compression cycle and absorption The 5 requirements for comfort are temperature, humidity, filtration, ventilation and _______ Circulation The primary function of an expansion device is to: Reduce pressure on liquid refrig, regulate flow, lower the boiling point below the temp of the load All of the above The wet-bulb depression is The difference between the dry-bulb and wet-bulb temperatures T...

CDPH Water Distribution Exam Questions and Answers Latest Update 2024/2025 (Graded 100%) What term is used when a water utility divides its total operating expenses into the total revenue? a.) Debt ratio b.) Operating ratio c.) Credit ratio d.) Coverage ratio b.) Operating ratio Under the requirements of the Safe Drinking Water Act, it is the duty of the water purveyor to deliver potable water of proper quality only as far as the: a.) Entry point of the distribution system b.) Customer'...