Stopping the Big Rigs - Quiz 3
According to the FMVSS 121 law, the secondary tank:
-
Must be isolated from the supply tank
-
Must be color coded
-
Must have a specific volume capacity
-
All the above
-
Both A and C
One-way check valves:
-
Allow air flow in one direction
-
Protect the secondary tank from a failure in the supply tank
-
Are required by FMVSS 121 law
-
All the above
Manual drain valves:
-
Are required by FMVSS 121 law
-
Permit release of condensation from the tank
-
Permit release of condensation from the tank, in order to protect the air system requirements
-
All the above
How does the driver know how much air pressure is in the secondary reservoir?
-
A low air warning switch
-
A manual drain valve
-
A pressure gauge
-
None of the above
What's the purpose of the dual foot control valve?
-
For backup control
-
To separate the secondary and primary circuits
-
To modulate the front service brakes
-
Both B and C
A two-way check valve:
-
Is like a tee with a check ball
-
Is the same as a one way check valve
-
Seeks out dominant air pressures
-
All the above
-
Both A and C
What's the function of a quick release valve?
-
Speeds up application time
-
Slows down the front brakes
-
Speeds up the release of the front brakes
The brake adjuster:
-
Speeds up the release of the front brakes
-
Changes linear force into rotary torque
-
Provides a means of adjusting the brakes
-
Both B and C
A quick release valve is:
-
Like a pipe tee with exhaust port
-
May have hold off capabilities
-
Is not used in the service brake system
-
Both A and B