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Nova Scotia Air Brake Practice Test
Practice mode
Question
1
of 25
QUESTION 1 / 25
Are all drivers required to adjust S-cam brake systems?
Choose one answer below.
A
No, only certified technicians
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B
Yes, all drivers should be able to
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C
Only experienced drivers
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D
No, it is optional
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QUESTION 2 / 25
What is the role of the brake chambers in an air brake system?
Choose one answer below.
A
To store excess air pressure.
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B
To convert air pressure into mechanical force to apply the brakes.
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C
To regulate the brake fluid levels.
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D
To monitor vehicle speed.
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QUESTION 3 / 25
How can brake efficiency be negatively impacted?
Choose one answer below.
A
By adding more brake fluid
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B
By poor lubrication of components
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C
By worn brake linings and excessive slack
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D
By increasing reservoir pressure
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QUESTION 4 / 25
What is the primary cause of brake failure in vehicles?
Choose one answer below.
A
Catastrophic system failure
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B
Poor weather conditions
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C
Brakes being out of adjustment
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D
Faulty brake pads
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QUESTION 5 / 25
What is the function of the cab-mounted parking brake control valve?
Choose one answer below.
A
To adjust the sensitivity of the brake pedal
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B
To allow the driver to exhaust air to apply or release brakes
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C
To modulate power distributed to all brakes
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D
To indicate brake wear through a warning signal
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QUESTION 6 / 25
Which components are typically found in a standard air brake system?
Choose one answer below.
A
Engine, transmission, and drive shaft
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B
Air compressor, air tanks, brake chambers, valves, and brake lines
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C
Clutch, flywheel, and rear differential
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D
Battery, alternator, and ignition system
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QUESTION 7 / 25
What are the five basic components of an air brake system?
Choose one answer below.
A
Compressor, governor, foot valve, light indicator, braking pads
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B
Compressor, governor, reservoir, foot valve, brake chambers
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C
Compressor, relay valve, reservoir, brake shoes, parking lever
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D
Air pump, regulator, reservoir, wheel cylinders, brake linings
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QUESTION 8 / 25
What are the three major types of air brakes used in heavy vehicles?
Choose one answer below.
A
Disc brakes, drum brakes, and anti-lock brakes
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B
Service brakes, parking brakes, and emergency brakes
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C
Hydraulic brakes, mechanical brakes, and pneumatic brakes
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D
Electromagnetic brakes, regenerative brakes, and air brakes
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QUESTION 9 / 25
How does air pressure affect the operation of air brakes?
Choose one answer below.
A
It has no effect on brake function
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B
It directly affects the vehicle's speed
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C
It is required to compress the brake chambers and activate the brakes
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D
It decreases the braking power over time
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QUESTION 10 / 25
How does altitude affect air brake performance?
Choose one answer below.
A
Higher altitudes can increase brake pressure
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B
Higher altitudes can reduce air pressure efficiency, affecting brake operation
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C
Altitude has no effect on brake performance
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D
Brakes perform better at higher altitudes
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QUESTION 11 / 25
What does ATC help improve on slippery surfaces?
Choose one answer below.
A
Braking distance
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B
Fuel economy
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C
Traction through reducing drive wheel overspin
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D
Speed of acceleration
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QUESTION 12 / 25
What can cause brake fade in an air brake system?
Choose one answer below.
A
Faulty brake pads.
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B
Overheating of brake components due to prolonged or excessive braking.
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C
Low brake fluid levels.
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D
Worn-out tires.
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QUESTION 13 / 25
On what principle does a disc brake operate?
Choose one answer below.
A
Using hydraulic pressure alone
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B
By direct contact with the wheel rim
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C
Air pressure acts on a brake chamber and slack adjuster
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D
Mechanical leverage applied by the driver
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QUESTION 14 / 25
How often should the air filter in an air brake system be replaced?
Choose one answer below.
A
Once a month
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B
Every six months
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C
According to manufacturer recommendations
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D
Only when visibly dirty
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QUESTION 15 / 25
In testing the trailer brakes, what should occur when the spring parking brake is released?
Choose one answer below.
A
The trailer service brakes will function
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B
The tractor brakes will not work
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C
The trailer service brakes will not function
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D
No air should escape
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QUESTION 16 / 25
How should you brake on wet or icy roads when driving a vehicle with ABS?
Choose one answer below.
A
Release the brake immediately
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B
Pump the brake pedal rapidly
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C
Apply the brakes normally without pumping
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D
Completely avoid using the brakes
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QUESTION 17 / 25
How can you check for air leaks in the brake system?
Choose one answer below.
A
By inspecting the brake pads visually.
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B
Listening for hissing sounds or using a soap solution to identify leaks.
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C
By checking fluid levels in the reservoir.
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D
Using a pressure gauge only.
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QUESTION 18 / 25
What can be used to check the proper operation of the stoplight switch in an air brake system?
Choose one answer below.
A
Monitoring engine temperature changes
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B
Activating the brakes and verifying the stop lights illuminate
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C
Listening for unusual sounds when braking
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D
Checking tire pressure
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QUESTION 19 / 25
What preventive measure can be taken to ensure safety during winter driving with air brakes?
Choose one answer below.
A
Use anti-freeze additives or ensure the air system is drained of moisture
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B
Increase tire pressure for better traction
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C
Use winter tires designed for air brake systems
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D
Drive at reduced speeds regardless of conditions
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QUESTION 20 / 25
What is the recommended procedure for releasing the parking brake?
Choose one answer below.
A
Release quickly to avoid rollback
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B
Gradually release while ensuring the vehicle is secure
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C
Only release it after performing a visual inspection
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D
Simply disconnect the brake line
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QUESTION 21 / 25
What is the safe method to test the air pressure gauge?
Choose one answer below.
A
By monitoring fuel levels during driving
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B
By using the air brake application and releasing method while monitoring gauge response
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C
By checking tire pressure
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D
By evaluating engine temperature
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QUESTION 22 / 25
What is the maximum pressure available for a full brake application at any given time?
Choose one answer below.
A
120 psi
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B
150 psi
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C
180 psi
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D
200 psi
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QUESTION 23 / 25
What is required at a "truck stop here" sign before a steep downgrade?
Choose one answer below.
A
Inspect the fuel levels
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B
Check the cargo load
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C
Inspect the braking system
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D
Test the engine performance
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QUESTION 24 / 25
How can a driver independently control the trailer brakes?
Choose one answer below.
A
By using the foot brake
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B
By using the hand valve
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C
By adjusting the trailer weight
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D
By releasing the tractor brakes
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QUESTION 25 / 25
What is the minimum amount of air you should have before beginning a trip?
Choose one answer below.
A
At least 80 PSI.
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B
At least 90 PSI.
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C
At least 100 PSI.
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D
At least 110 PSI.
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