Do You Know How To Use Air Break?
In the quiz below we, look and want to ascertain that you know how to use the air breaks. Despite of the answers you are going to give and the results, it is certain that you are going to learn.
- 1.Hydraulic systems use brake?
- A.
A. Steam
- B.
B. Compressed air
- C.
C. Water
- D.
D. Brake fluid
- 2.Brakes convert the energy of a moving vehicle into?
- A.
Water
- B.
Compressed air
- C.
Heat
- D.
Noise
- 3.Air compressors are powered directly by the engine or by using?
- A.
Belts and pulleys
- B.
Brackets and supports
- C.
Chains and sprockets
- D.
Belts and Chains
- 4.
![The compressed air in an air brake system is stored in? - ProProfs]( "The compressed air in an air brake system is stored in?")
The compressed air in an air brake system is stored in?- A.
The vehicle's air tanks
- B.
The air compressor governor
- C.
The brake chambers
- D.
Belts and chains
- 5.Alcohol evaporators may be used to?
- A.
Add water to the air brake system to prevent freezing
- B.
Heat the air brake system to help prevent freezing
- C.
Helps prevent moisture in the air brake system from freezing
- D.
Remove water vapor from the air brake system
- 6.When a spring brake chamber has been disabled by a 'caging bolt' or other mechanism?
- A.
It looks the same to a driver
- B.
The spring brake will still apply
- C.
The service brake will not apply
- D.
The spring brake will not apply
- 7.
![Trailer couplers or 'gladhands' are usually? - ProProfs]( "Trailer couplers or 'gladhands' are usually?")
Trailer couplers or 'gladhands' are usually?- A.
Painted the same colour as the vehicle
- B.
Cross-connected when colours are matched
- C.
Yellow and black to avoid cross-connection
- D.
Colour matched and designed to prevent cross-connection
- 8.Brake fade can result from?
- A.
High brake temperatures
- B.
High air compressor temperature
- C.
High air brake system pressure
- D.
Driving at high altitudes
- 9.Anti-lock braking systems (ABS) use warning indicator lights to indicate?
- A.
The system temperature
- B.
Malfunctions of the system
- C.
Wheel skidding
- D.
None of the above
- 10.When a vehicle's brakes do not comply with the Ontario Highway Traffic Act and regulations?
- A.
Only the driver may be charged
- B.
Only the vehicle operator may be charged
- C.
The driver will not be charged
- D.
Both the vehicle operator and the driver may be charged
- 11.Drivers must be careful when conducting an inspection of the air brake system to avoid?
- A.
Unexpected vehicle movement
- B.
Compressed air exhausting from components
- C.
Moving vehicle parts
- D.
All of the above
- 12.
![When inspecting , the driver must look for? - ProProfs]( "When inspecting , the driver must look for?")
When inspecting , the driver must look for?- A.
Brake calipers or rotors that are not the same colour
- B.
Broken or cracked brake drums or rotors
- C.
Brake drums or shoes that are not the correct size
- D.
Square ports and markings
- 13.An air compressor governor should cut-in approximately 138 to 173 kPa (20 to 25 psi)?
- A.
Below cut-out pressure setting
- B.
Above cut-in pressure setting
- C.
Above cut-out pressure setting
- D.
Below cut-in pressure setting
- 14.The air loss rate on a single vehicle (bus, tractor or truck) must not exceed?
- A.
21 kPa (3 psi) per minute
- B.
41 kPa (6 psi) per minute
- C.
55 kPa (8 psi) per minute
- D.
7 kPa (1 psi) per minute
- 15.When an air brake brake system is defective you must?
- A.
Drive the vehicle slowly on the highway
- B.
Drive the vehicle to the nearest service station
- C.
Drive the vehicle back to the terminal
- D.
Not drive or operate the vehicle on any road or highway
- 16.A reliable method for inspecting brake adjustment on a brake having an exposed push rod is?
- A.
Measuring the applied push rod stroke
- B.
Checking air pressure drop on brake application
- C.
Checking for a 90-degree angle when brakes are applied
- D.
Rolling the vehicle forward and applying the brakes
- 17.
![When , air pressure must be between? - ProProfs]( "When , air pressure must be between?")
When , air pressure must be between?- A.
690 and 828 kPa (100 and 120 psi)
- B.
621 and 690 kPa (90 and 100 psi)
- C.
690 and 932 kPa (100 and 135 psi)
- D.
414 and 828 kPa (60 and 120 psi)
- 18.A brake having an exposed push rod is out of adjustment when?
- A.
The push rod stoke exceeds the adjustment limit of the brake chamber
- B.
The angle between the slack adjuster and push rod is less than 90 degrees
- C.
The angle between the slack adjuster and push rod is more than 90 degrees
- D.
Air pressure drops more than 55 kPa (8 psi when brakes are applied
- 19.
![Repair and re-adjustment of all types of air brakes may be performed by? - ProProfs]( "Repair and re-adjustment of all types of air brakes may be performed by?")
Repair and re-adjustment of all types of air brakes may be performed by?- A.
Licensed drivers
- B.
Certified drivers
- C.
Certified technician
- D.
Drivers with a valid air brake endorsement
- 20.Air tanks must be drained regularly because?
- A.
This is where moisture and oil collect
- B.
Tanks will develop too much pressure
- C.
Tanks will overheat
- D.
This is where primary and secondary air collect
- 21.The brake pedal in an air brake system is used to?
- A.
Apply vehicle spring brakes
- B.
Raise and lower air brake system pressure
- C.
Apply vehicle service brakes
- D.
Apply trailer service brakes only
- 22.A spring brake control valve is normally?
- A.
Located in the same position in all commerical vehicles
- B.
Pulled to release and pushed to apply the service brake
- C.
A toggle-type valve located in the same position in all vehicles
- D.
A push/pull type valve located near the driver
- 23.
![When trailer couplers or gladhands are cross-connected? - ProProfs]( "When trailer couplers or gladhands are cross-connected?")
When trailer couplers or gladhands are cross-connected?- A.
Trailer service and spring brakes will function correctly
- B.
The trailer spring brakes will release and function correctly
- C.
Trailer service and spring brakes will not function correctly
- D.
Trailer service brakes will function correctly
- 24.A vehicle's brakes must do more work when?
- A.
The vehicle carries less weight
- B.
The vehicle goes slower
- C.
The vehicle carries more weight
- D.
All of the above
- 25.
![When brake chamber push rod stoke exceeds the adjustment limit? - ProProfs]( "When brake chamber push rod stoke exceeds the adjustment limit?")
When brake chamber push rod stoke exceeds the adjustment limit?- A.
The spring brakes will still work normally
- B.
Vehicle stopping distances became shorter
- C.
Vehicle braking capacity will increase
- D.
Braking ability is reduced
Questions: 20 | Attempts: 8480 | Last updated: May 16, 2019
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Sample QuestionWhy must air tanks be drained?
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