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New Jersey Air Brakes Practice Test
Practice mode
Question
1
of 25
QUESTION 1 / 25
Excessive heat from frequent brake use can lead to what issue?
Choose one answer below.
A
Brake noise
✓
B
Reduced fuel efficiency
✓
C
Brake fade or failure
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D
Increased stopping distance
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QUESTION 2 / 25
How often should you test the functionality of your air brake system?
Choose one answer below.
A
Once a month during maintenance
✓
B
Before every trip as part of pre-trip inspection
✓
C
Only if warning lights indicate a problem
✓
D
At the beginning of each week
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QUESTION 3 / 25
What safety checks should be performed daily on air brakes?
Choose one answer below.
A
Check tire pressure only
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B
Inspect brake lines, connections, and the functionality of warning devices
✓
C
Check the fuel levels
✓
D
Inspect only the electronic components
✓
QUESTION 4 / 25
What does the application pressure gauge indicate in an air brake system?
Choose one answer below.
A
How much air pressure is in the tanks
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B
How much air pressure you are applying to the brakes
✓
C
The temperature of the air in the system
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D
The total air capacity of the system
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QUESTION 5 / 25
What type of maintenance is essential for the longevity of air brake systems?
Choose one answer below.
A
Frequent washing of the vehicle
✓
B
Regular inspection and timely replacement of worn components
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C
Only replacing brake fluid
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D
Checking tire pressure alone
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QUESTION 6 / 25
What should you check for if you experience a loss of braking power?
Choose one answer below.
A
Tire pressure
✓
B
Transmission fluid
✓
C
Air pressure
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D
Engine oil
✓
QUESTION 7 / 25
Which components are vital to check during a full brake system inspection?
Choose one answer below.
A
Only the brake pads
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B
The engine and transmission
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C
All components including hoses and air tanks
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D
Only the brake lights
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QUESTION 8 / 25
What type of maintenance is crucial for air brake systems?
Choose one answer below.
A
Regular oil changes
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B
Ensuring proper tire pressure
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C
Frequent cleaning of the air filters
✓
D
Regular drainage of water and oil from tanks
✓
QUESTION 9 / 25
How are air brake systems powered in commercial vehicles?
Choose one answer below.
A
By an electrical battery
✓
B
By a vehicle's air compressor
✓
C
By hydraulic fluid pressure
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D
By the engine's fuel system
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QUESTION 10 / 25
How often should the air dryer filter be replaced?
Choose one answer below.
A
Once a month
✓
B
As part of the regular maintenance schedule
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C
Every six months
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D
Only when it fails
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QUESTION 11 / 25
How should a driver address air loss when descending a steep grade?
Choose one answer below.
A
Use the engine brake in conjunction with the service brakes
✓
B
Engage only the emergency brake
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C
Reduce speed drastically to regain pressure
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D
Switch off the air compressor temporarily
✓
QUESTION 12 / 25
How do spring brakes engage in the event of air pressure loss?
Choose one answer below.
A
They automatically release pressure
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B
The springs compress to disengage the brakes
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C
The springs are released to apply the brakes automatically
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D
They require manual activation by the driver
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QUESTION 13 / 25
How does temperature affect air brake performance?
Choose one answer below.
A
It has no effect
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B
It can enhance performance
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C
Extreme temperatures can affect air pressure and component functionality
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D
It only affects the brake pads
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QUESTION 14 / 25
How can drivers check for air leaks in their brake system?
Choose one answer below.
A
By measuring the air pressure
✓
B
By performing a visual inspection and listening for hissing sounds
✓
C
By tapping the brake pedal
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D
By checking the brake fluid level
✓
QUESTION 15 / 25
How must a driver operate the brakes on an air-braked vehicle?
Choose one answer below.
A
Suddenly and forcefully
✓
B
Smoothly and steadily to avoid sudden jerks or loss of control
✓
C
Only when necessary
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D
As quickly as possible
✓
QUESTION 16 / 25
How should air brakes be tested during driving?
Choose one answer below.
A
Conduct a brake test to check for proper stopping power
✓
B
Increase the speed and then brake suddenly
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C
Ensure the air pressure is at maximum
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D
Test the brakes by driving in reverse
✓
QUESTION 17 / 25
How can you determine if the air brake system is operating correctly?
Choose one answer below.
A
By visually inspecting the brake pads
✓
B
By checking for leaks in the air lines
✓
C
By performing a brake application and checking air pressure response
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D
By listening for unusual noises while braking
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QUESTION 18 / 25
How do you identify when air brakes are functioning properly?
Choose one answer below.
A
They should make a loud noise
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B
They should engage smoothly without excessive pedal travel or noise
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C
They should take longer to engage
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D
They should feel very tight
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QUESTION 19 / 25
How can you ensure that no air leaks are present?
Choose one answer below.
A
By replacing all components regularly
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B
Conduct a thorough visual inspection and perform an air leakage test
✓
C
Using an air compressor
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D
Checking only during winter
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QUESTION 20 / 25
How do you perform a safe stop with air brakes?
Choose one answer below.
A
Apply the brakes suddenly to halt
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B
Gradually apply the brakes and maintain control of the vehicle
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C
Use engine braking primarily
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D
Switch off the air system while stopping
✓
QUESTION 21 / 25
What indicates that your brakes are fading?
Choose one answer below.
A
You hear a grinding noise when braking
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B
You have to push harder on the brake pedal to control your speed on a downgrade
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C
Your vehicle shakes when you brake
✓
D
The brake lights do not come on
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QUESTION 22 / 25
What could indicate a potential leak in the air brake system?
Choose one answer below.
A
Inconsistent brake pressure
✓
B
Vehicle acceleration beyond limit
✓
C
Excessive engine noise
✓
D
Inflated tires
✓
QUESTION 23 / 25
What is the maximum acceptable air loss rate for a straight truck or bus with the engine off and brakes applied?
Choose one answer below.
A
1 psi in one minute
✓
B
2 psi in one minute
✓
C
3 psi in one minute
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D
4 psi in one minute
✓
QUESTION 24 / 25
What may indicate a malfunction in the air brake system while driving?
Choose one answer below.
A
Increased vehicle speed
✓
B
Unusual noises from the brakes
✓
C
Flashing headlights
✓
D
Vibrations in the steering wheel
✓
QUESTION 25 / 25
How often should you inspect the air compressor for proper operation?
Choose one answer below.
A
Every month
✓
B
Once a week
✓
C
Before every trip
✓
D
Only when experiencing issues
✓
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