FDNY A35 EXAM QUESTIONS AND ANSWERS
LATEST 2025-2026 UPDATE
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 compressors - 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 the 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 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 - 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.
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 public thoroughfares
Permit is required for air compressor - Answer-that compresses air
above 100 PSI
Types of air compressors - Answer-(1) reciprocating;
(2) centrifugal;
LATEST 2025-2026 UPDATE
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 compressors - 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 the 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 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 - 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.
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 public thoroughfares
Permit is required for air compressor - Answer-that compresses air
above 100 PSI
Types of air compressors - Answer-(1) reciprocating;
(2) centrifugal;
