FDNY A35 QUESTIONS AND ANSWERS
After any fire or explosion, the Bureau of Fire Prevention may require a detailed report.
This report must be filed within ____ days after the incident. - Answers- 10
An air compressor should be raised at least ____ feet above ground level to avoid
drawing in any flammable gases. - Answers- 5
(Flammable gases are usually heavier than air and fall to the floor before spreading
outward)
The air is compressed in a ___________ ________ - Answers- Compression Chamber
The compression chamber consists of a ______ inside a _______ - Answers- Piston
inside a cylinder
The closed intake valve prevents air from _________________ - Answers- Escaping
from the cylinder
The upward stroke of the piston ___________________ - Answers- Compresses the
air
The piston moves - Answers- Up and down
When air pressure reaches a certain level, it forces open a ________ _____ - Answers-
Discharge Valve
The discharge valve is ____ loaded. - Answers- Spring Loaded
When the discharge valve opens, compressed air is released into the ____. - Answers-
Into an air receiver
The air receiver is sometimes call the ____. - Answers- Air tank
When it is needed to supply tools or machinery, compressed air is taken from the ____.
- Answers- Air receiver.
Typically, compressors with one cylinder and piston are called ____. - Answers- Single
stage air compressor
Typically, compressors with multiple cylinders and pistons are called ____. - Answers-
Multi Stage
However, There are air compressors with multiple pistons and cylinders that are -
Answers- Single Stage
, Why are some compressors with multiple cylinders and pistons considered single-
stage? - Answers- Because each cylinder discharges directly into the air receiver
Which type of compressor is this? Each cylinder increases air pressure by taking air
from the discharge side of the previous cylinder and increasing the pressure to a new
level. - Answers- Multi Stage
In a multi stage compressor - Answers- Each cylinder will increase the pressure of the
air by taking air from the discharge side of the previous cylinder and increasing the
pressure to a new level
Once it reaches the last cylinder the pressurized air is discharged into the - Answers-
Air receiver
When air is compressed the tempature of the air _______ _____ - Answers- Becomes
heated
An intercooler is installed between the ______________________ - Answers- Between
the stages of the air compressor
An ____ cools the air as it travels between the compression stages. - Answers-
Intercooler
The intercooler cools the air as it travels - Answers- Between the compression stages
In some systems the compressed air is forced from the air receiver into ____ that can
be used later. - Answers- Storage Containers
(These containers allow the compressed air to be used later as needed)
When the piston moves downward it ______________________ - Answers- Draws air
into the cylinder
Air is drawn in through the ____ valve. - Answers- Intake Valve
The intake valve automatically opens when the piston moves ____________ -
Answers- Downward
What happens to the intake valve when the piston changes direction and moves
upward? - Answers- It automatically closes.
The intake valve automatically opens when the piston moves which way? - Answers-
Downward
What does the unloading valve do? - Answers- Allows the air to escape from the
compression chamber when there is a strain on the electrical motor
After any fire or explosion, the Bureau of Fire Prevention may require a detailed report.
This report must be filed within ____ days after the incident. - Answers- 10
An air compressor should be raised at least ____ feet above ground level to avoid
drawing in any flammable gases. - Answers- 5
(Flammable gases are usually heavier than air and fall to the floor before spreading
outward)
The air is compressed in a ___________ ________ - Answers- Compression Chamber
The compression chamber consists of a ______ inside a _______ - Answers- Piston
inside a cylinder
The closed intake valve prevents air from _________________ - Answers- Escaping
from the cylinder
The upward stroke of the piston ___________________ - Answers- Compresses the
air
The piston moves - Answers- Up and down
When air pressure reaches a certain level, it forces open a ________ _____ - Answers-
Discharge Valve
The discharge valve is ____ loaded. - Answers- Spring Loaded
When the discharge valve opens, compressed air is released into the ____. - Answers-
Into an air receiver
The air receiver is sometimes call the ____. - Answers- Air tank
When it is needed to supply tools or machinery, compressed air is taken from the ____.
- Answers- Air receiver.
Typically, compressors with one cylinder and piston are called ____. - Answers- Single
stage air compressor
Typically, compressors with multiple cylinders and pistons are called ____. - Answers-
Multi Stage
However, There are air compressors with multiple pistons and cylinders that are -
Answers- Single Stage
, Why are some compressors with multiple cylinders and pistons considered single-
stage? - Answers- Because each cylinder discharges directly into the air receiver
Which type of compressor is this? Each cylinder increases air pressure by taking air
from the discharge side of the previous cylinder and increasing the pressure to a new
level. - Answers- Multi Stage
In a multi stage compressor - Answers- Each cylinder will increase the pressure of the
air by taking air from the discharge side of the previous cylinder and increasing the
pressure to a new level
Once it reaches the last cylinder the pressurized air is discharged into the - Answers-
Air receiver
When air is compressed the tempature of the air _______ _____ - Answers- Becomes
heated
An intercooler is installed between the ______________________ - Answers- Between
the stages of the air compressor
An ____ cools the air as it travels between the compression stages. - Answers-
Intercooler
The intercooler cools the air as it travels - Answers- Between the compression stages
In some systems the compressed air is forced from the air receiver into ____ that can
be used later. - Answers- Storage Containers
(These containers allow the compressed air to be used later as needed)
When the piston moves downward it ______________________ - Answers- Draws air
into the cylinder
Air is drawn in through the ____ valve. - Answers- Intake Valve
The intake valve automatically opens when the piston moves ____________ -
Answers- Downward
What happens to the intake valve when the piston changes direction and moves
upward? - Answers- It automatically closes.
The intake valve automatically opens when the piston moves which way? - Answers-
Downward
What does the unloading valve do? - Answers- Allows the air to escape from the
compression chamber when there is a strain on the electrical motor
