FDNY A -35 ACTUAL QUESTIONS AND DETAILED ANSWERS (100% CORRECT VERIFIED ANSWERS) LATEST UPDATED VE RSION 2024 |ALREADY GRADED A+ (BRAND NEW!!) Air compressors power... - Answer -(1) industrial equipment and (2) construction tools Examples of equipment powered by air compressor - Answer -
pneumatic wrenches, lifts in auto service stations, paint spray booths Air compressors enable... - Answer -(1) efficient repair of all types of vehicles; and (2) facilitate their safe operation on publi c thoroughfares Permit is required for air compressor - Answer -that compresses air above 100 PSI Types of air compressors - Answer -(1) reciprocating; (2) centrifugal; (3) solar; and (4) rotary *Difference is the way in which they compress air How do ai r compressors work - Answer -take the air in a room and force it into a container UNDER PRESSURE. The more air forced into the container, the greater the pressure. Compressed air can be discharged from the container at a controlled rate. Most common air compressor - Answer -Reciprocating Air compressors are sometimes called - Answer -air pumps Air compressors can be powered by: - Answer -(1) electric motors; (2) internal combustion engines; or (3) steam turbines Explosions & air compressor s - Answer -If there is a build up of flammable gases (ex: in service stations and workshops), those gases are heavier than air and fall to the floor before spreading outward. These gases are easily ignited by sparks and high temperatures --which INCLUDES th e heat generated by an air compressor. To avoid explosions w/ air compressors - Answer -Raise air compressor at LEAST 5 feet above ground level so that no flammable gases are drawn into the compressor. To meet the height requirement you can place compresso r on a shelf or bench OR the air receiver tank may be turned and stood on end w/ the air compressor bolted to the top of the tank. Power to air compressor - Answer -entire unit is driven by an electric motor. Motor activates a series of drive belts. Belts power the moving parts of the unit --like w/ power steering and alternator in automobile 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 m oves down -->draws air into cylinder, through INTAKE VALVE (valve automatically opens when piston moves down).
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