FDNY A35 Exam Questions and
Answer 2026 A+ Verified 100%
Pass
•Air compressors power... -✓✓(1) industrial equipment and (2)
construction tools
•Examples of equipment powered by air compressor -✓✓pneumatic
wrenches, lifts in auto service stations, paint spray booths
•Air compressors enable... -✓✓(1) efficient repair of all types of
vehicles; and (2) facilitate their safe operation on public thoroughfares
•Permit is required for air compressor -✓✓that compresses air above
100 PSI
•Types of air compressors -✓✓(1) reciprocating;
(2) centrifugal;
(3) solar; and
(4) rotary
*Difference is the way in which they compress air
•How do air compressors work -✓✓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 -✓✓Reciprocating
•Air compressors are sometimes called -✓✓air pumps
, •Air compressors can be powered by: -✓✓(1) electric motors;
(2) internal combustion engines; or
(3) steam turbines
•Explosions & air compressors -✓✓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 the
heat generated by an air compressor.
•To avoid explosions w/ air compressors -✓✓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
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.
•Power to air compressor -✓✓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 -✓✓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 -✓✓When air pressure reaches a certain level,
it forces open a DISCHARGE VALVE (which is spring loaded). This
releases compressed air into air reciever (aka air tank), which is what
supplies compressed air when needed.
Answer 2026 A+ Verified 100%
Pass
•Air compressors power... -✓✓(1) industrial equipment and (2)
construction tools
•Examples of equipment powered by air compressor -✓✓pneumatic
wrenches, lifts in auto service stations, paint spray booths
•Air compressors enable... -✓✓(1) efficient repair of all types of
vehicles; and (2) facilitate their safe operation on public thoroughfares
•Permit is required for air compressor -✓✓that compresses air above
100 PSI
•Types of air compressors -✓✓(1) reciprocating;
(2) centrifugal;
(3) solar; and
(4) rotary
*Difference is the way in which they compress air
•How do air compressors work -✓✓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 -✓✓Reciprocating
•Air compressors are sometimes called -✓✓air pumps
, •Air compressors can be powered by: -✓✓(1) electric motors;
(2) internal combustion engines; or
(3) steam turbines
•Explosions & air compressors -✓✓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 the
heat generated by an air compressor.
•To avoid explosions w/ air compressors -✓✓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
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.
•Power to air compressor -✓✓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 -✓✓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 -✓✓When air pressure reaches a certain level,
it forces open a DISCHARGE VALVE (which is spring loaded). This
releases compressed air into air reciever (aka air tank), which is what
supplies compressed air when needed.
