FDNY A-35 EXAM LATEST 2023-2024 ACTUAL
EXAM 100 QUESTIONS AND CORRECT DETAILED
ANSWERS (100%VERIFIED ANSWERS) |AGRADE
Terms in this set (51)
Air compressors power... (1) industrial equipment and (2) construction tools
Examples of equipment pneumatic wrenches, lifts in auto service stations,
powered by air paint spray booths
compressor
(1) efficient repair of all types of vehicles; and (2)
Air compressors enable...
facilitate their safe operation on public thoroughfares
Permit is required for air that compresses air above 100 PSI
compressor
(1) reciprocating;
(2) centrifugal;
(3) solar; and
Types of air compressors
(4) rotary
*Difference is the way in which they compress air
take the air in a room and force it into a container
UNDER PRESSURE. The more air forced into the
How do air compressors
container, the greater the pressure. Compressed air
work
can be discharged from the container at a controlled
rate.
Most common air Reciprocating
compressor
Air compressors are air pumps
sometimes called
, (1) electric motors;
Air compressors can be
(2) internal combustion engines; or
powered by:
(3) steam turbines
If there is a build up of flammable gases (ex: in service
stations and workshops), those gases are heavier than
Explosions & air air and fall to the floor before spreading outward.
compressors These gases are easily ignited by sparks and high
temperatures--which INCLUDES the heat generated
by an air compressor.
Raise air compressor at LEAST 5 feet above ground
level so that no flammable gases are drawn into the
To avoid explosions w/ air compressor. To meet the height requirement you can
compressors place compressor 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.
entire unit is driven by an electric motor. Motor
activates a series of drive belts. Belts power the
Power to air compressor
moving parts of the unit--like w/ power steering and
alternator in automobile
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,
Compression Chamber
through INTAKE VALVE (valve automatically opens
operation
when piston moves down).
When piston moves up-->air is compressed (intake
vale automatically closes to avoid air escaping from
cylinder).
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