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ASE School Bus Technician Brakes Certification (S4) Practice
Practice mode
Question
1
of 25
QUESTION 1 / 25
What is a recommended practice for storing a school bus during winter months?
Choose one answer below.
A
Keep the bus in a heated garage without applying the parking brake
✓
B
Apply the parking brake and ensure the system is free of moisture
✓
C
Drain all fluids and leave it unmaintained
✓
D
Use a cover that traps heat to prevent freezing
✓
QUESTION 2 / 25
What is the best practice for caring for air brake hoses?
Choose one answer below.
A
Inspect for wear and replace if cracked or damaged
✓
B
Soak them in oil to prevent drying
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C
Keep them exposed to sunlight to prevent mold
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D
Wrap them with insulating tape
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QUESTION 3 / 25
Which components are typically found in an air brake system?
Choose one answer below.
A
Compressor, battery, brake pads, and sensors
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B
Compressor, air tanks, brake chambers, and brake valves
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C
Brake pedal, fluid reservoir, master cylinder, and hydraulic lines
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D
Braking computer, air filter, air dryer, and booster
✓
QUESTION 4 / 25
What does an anti-lock braking system (ABS) do for a school bus?
Choose one answer below.
A
Enhances fuel efficiency
✓
B
Increases brake wear
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C
Prevents wheel lock-up during hard braking
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D
Allows for longer braking distances
✓
QUESTION 5 / 25
How often should air brake system components be tested for functionality?
Choose one answer below.
A
Once every year
✓
B
Only when there is a noticeable issue
✓
C
Regularly, as part of routine maintenance
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D
Every two years
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QUESTION 6 / 25
How can a technician verify the accuracy of the air pressure gauge?
Choose one answer below.
A
By visual estimation during operation
✓
B
By comparing it with a calibrated pressure gauge
✓
C
By adjusting the gauge manually
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D
By conducting a physical inspection of the gauge components
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QUESTION 7 / 25
Which method can be utilized to check brake adjustment?
Choose one answer below.
A
Inspecting brake fluid levels
✓
B
Measuring the pushrod stroke with the brake fully released and applied
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C
Testing for air leaks in the system
✓
D
Listening for unusual sounds during a brake test
✓
QUESTION 8 / 25
How can a technician check for air leaks in the air brake system?
Choose one answer below.
A
By using a pressure gauge
✓
B
By listening for hissing sounds and using soapy water on fittings
✓
C
By inspecting the brake lines visually
✓
D
By checking for uneven braking
✓
QUESTION 9 / 25
How can a technician ensure brake components are properly torqued?
Choose one answer below.
A
By tightening until the component feels secure
✓
B
By following the manufacturer's specifications using a torque wrench
✓
C
By using a standard wrench until resistance is felt
✓
D
By visually inspecting the connection for tightness
✓
QUESTION 10 / 25
How can a defective brake line be identified?
Choose one answer below.
A
By checking the brake light functionality
✓
B
By visual inspection for cracks, bends, or leaks
✓
C
By measuring brake pad thickness
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D
By testing the air pressure in the system
✓
QUESTION 11 / 25
How do you determine the correct adjustment of brake shoes?
Choose one answer below.
A
By measuring the brake fluid level
✓
B
By measuring the distance between the shoes and the drum when brakes are applied
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C
By measuring the distance between the shoes and the drum when brakes are not applied
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D
By assessing the wear on the brake pedal
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QUESTION 12 / 25
How do you test the functioning of ABS on a school bus?
Choose one answer below.
A
By checking for leaks in the system
✓
B
By performing a road test and checking for normal brake operation
✓
C
By replacing the ABS unit
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D
By visually inspecting the wiring
✓
QUESTION 13 / 25
What is a key sign of worn brake drums?
Choose one answer below.
A
Uneven tire wear
✓
B
Increased noise during braking
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C
Grooves or scoring visible on the surface
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D
Excessive brake dust accumulation
✓
QUESTION 14 / 25
What preventive measure can be taken to avoid excess water accumulation in the air system?
Choose one answer below.
A
Regularly inspect brake pads
✓
B
Use an air dryer with a desiccant
✓
C
Ensure the engine is well lubricated
✓
D
Align the wheels properly
✓
QUESTION 15 / 25
What effect does moisture have on brake fluid?
Choose one answer below.
A
It enhances fluid viscosity
✓
B
It decreases the boiling point
✓
C
It improves lubrication
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D
It has no effect
✓
QUESTION 16 / 25
How does moisture impact an air brake system?
Choose one answer below.
A
Can facilitate smoother operation of brakes
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B
Can cause corrosion and freezing in cold weather
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C
Can improve air flow within the system
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D
Has no effect on the brake system
✓
QUESTION 17 / 25
During a brake system inspection, what is one sign of a potential problem?
Choose one answer below.
A
Uniform brake lining thickness
✓
B
Grinding noise during braking
✓
C
Consistent brake pedal feel
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D
Normal brake fluid color
✓
QUESTION 18 / 25
What are symptoms of a failing brake booster?
Choose one answer below.
A
Increased engine noise and vibrations
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B
Increased effort to press the brake pedal and longer stopping distance
✓
C
Frequent overheating of the brakes
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D
Unusual sounds when braking
✓
QUESTION 19 / 25
What are common signs of a malfunctioning air brake system?
Choose one answer below.
A
Decreased fuel efficiency and increased weight
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B
Warning lights, unusual noises, and longer stopping distances
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C
Increased speed and improved acceleration
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D
Better handling and reduced vibration
✓
QUESTION 20 / 25
What is the most critical element to check when inspecting brake linings?
Choose one answer below.
A
Color of the linings
✓
B
Thickness and signs of glazing or contamination
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C
Weight of the linings
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D
Sound made during braking
✓
QUESTION 21 / 25
What is the role of the relay valve in an air brake system?
Choose one answer below.
A
To control the temperature of the brake fluid
✓
B
To decrease the speed of response between the control valve and brake chamber
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C
To increase the speed of response between the control valve and brake chamber
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D
To regulate air pressure in the system
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QUESTION 22 / 25
Why is periodic testing of the air brake system important?
Choose one answer below.
A
To increase the noise of the braking system
✓
B
To ensure all components are functioning properly
✓
C
To reduce the need for maintenance
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D
To enhance the appearance of the brakes
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QUESTION 23 / 25
What is the first step when working with service brakes on air brake systems?
Choose one answer below.
A
Test the brake pressure
✓
B
Cage the spring brake
✓
C
Inspect the brake pads
✓
D
Check for air leaks
✓
QUESTION 24 / 25
What is the effect of air brake lag time?
Choose one answer below.
A
It increases the speed of the vehicle
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B
It causes a delay between the application of the pedal and brake activation
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C
It leads to a decrease in fuel consumption
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D
It improves the response time of the brakes
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QUESTION 25 / 25
When checking the push-pull valve, what is the allowable leakage at the exhaust port?
Choose one answer below.
A
It should not exceed a 1 inch soap bubble every three seconds
✓
B
It should not exceed a 1 inch soap bubble every ten seconds
✓
C
It should not exceed a 1 inch soap bubble every five seconds
✓
D
It should not exceed a 1 inch soap bubble every fifteen seconds
✓
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