TEXAS CDL AIR BRAKES, TX CDL #3- AIR
BRAKES- SECTION 5, CDL AIR BRAKES 2 2024
LATEST ACTUAL EXAM 200 DETAILED
QUESTIONS AND GUARANTEED ANSWERS
ALREADY GRADED A+.
To check the slack adjusters on s-can brakes, you should ... - ANSWER-
Wear gloves and pull hard on each adjuster.
To test low pressure warning... - ANSWER- 1. Shut of engine.
2. Turn on electrical power.
3. Step on and off brake pedal to reduce to 60 psi.
With dual air systems, the air pressure should build... - ANSWER- From 85
to 100 psi in 45 seconds n
A fully charged air system typically has ____ psi. - ANSWER- 125
To test air leakage rate you should... - ANSWER- Turn off engine and
release the service brake.
,When testing air leakage rates for combination vehicles(before applying the
brake pedal), air brake systems should not lose air faster than... -
ANSWER- 3 psi per minute.
To check the air compressor governor cut in and cut out pressures... -
ANSWER- 1. Run the engine at a fast idle.
2. Step in and off the brake to reduce tank pressure.
3. Monitor the air pressure gauge.
Brake drums: - ANSWER- 1. Are bolted to the wheels.
2. Are located at each end of the vehicles axles.
3. Hold the brake shoes and linings.
Air brake systems combine what three different systems? - ANSWER-
Service brakes, parking brakes and emergency brakes.
When should you drain the air tanks? - ANSWER- After every working day.
,Why drain water from the compressed air tanks? - ANSWER- Water can
freeze in cold weather and cause brake failure.
Air brake equipped vehicles must have: - ANSWER- A supply pressure
gauge and warning signal when psi drops below 60.
What can legally hold a parking or emergency brake in position for a truck,
truck tractor or bus? - ANSWER- Spring pressure.
What makes the total stopping distance for air brakes longer than that for
hydraulic brakes? - ANSWER- Brake lag distance.
The first thing you should do when the low air pressure warning comes on?
- ANSWER- Stop and safely park ASAP.
The braking power of the spring brakes: - ANSWER- Depends on the
adjustment of the service brakes.
The air compressor governor controls what? - ANSWER- When air is
pumped into the air tanks.
, The application pressure gauge shows the driver how much pressure: -
ANSWER- Is being applied to the brakes.
When you apply pressure to the brake pedal, you are... - ANSWER-
Pushing against a spring and against air pressure to the brakes.
The air compressor is connected to the engine through... - ANSWER-
Gears or a V-belt
Which type of brake is the most common in commercial vehicles? -
ANSWER- S-cam brake
An application pressure gauge... - ANSWER- Shows how much air
pressure you are applying to the brakes.
All vehicles with air brakes are required to have a low pressure warning
signal. This could be... - ANSWER- A red light, wig wag mechanical arm or
a buzzer.
BRAKES- SECTION 5, CDL AIR BRAKES 2 2024
LATEST ACTUAL EXAM 200 DETAILED
QUESTIONS AND GUARANTEED ANSWERS
ALREADY GRADED A+.
To check the slack adjusters on s-can brakes, you should ... - ANSWER-
Wear gloves and pull hard on each adjuster.
To test low pressure warning... - ANSWER- 1. Shut of engine.
2. Turn on electrical power.
3. Step on and off brake pedal to reduce to 60 psi.
With dual air systems, the air pressure should build... - ANSWER- From 85
to 100 psi in 45 seconds n
A fully charged air system typically has ____ psi. - ANSWER- 125
To test air leakage rate you should... - ANSWER- Turn off engine and
release the service brake.
,When testing air leakage rates for combination vehicles(before applying the
brake pedal), air brake systems should not lose air faster than... -
ANSWER- 3 psi per minute.
To check the air compressor governor cut in and cut out pressures... -
ANSWER- 1. Run the engine at a fast idle.
2. Step in and off the brake to reduce tank pressure.
3. Monitor the air pressure gauge.
Brake drums: - ANSWER- 1. Are bolted to the wheels.
2. Are located at each end of the vehicles axles.
3. Hold the brake shoes and linings.
Air brake systems combine what three different systems? - ANSWER-
Service brakes, parking brakes and emergency brakes.
When should you drain the air tanks? - ANSWER- After every working day.
,Why drain water from the compressed air tanks? - ANSWER- Water can
freeze in cold weather and cause brake failure.
Air brake equipped vehicles must have: - ANSWER- A supply pressure
gauge and warning signal when psi drops below 60.
What can legally hold a parking or emergency brake in position for a truck,
truck tractor or bus? - ANSWER- Spring pressure.
What makes the total stopping distance for air brakes longer than that for
hydraulic brakes? - ANSWER- Brake lag distance.
The first thing you should do when the low air pressure warning comes on?
- ANSWER- Stop and safely park ASAP.
The braking power of the spring brakes: - ANSWER- Depends on the
adjustment of the service brakes.
The air compressor governor controls what? - ANSWER- When air is
pumped into the air tanks.
, The application pressure gauge shows the driver how much pressure: -
ANSWER- Is being applied to the brakes.
When you apply pressure to the brake pedal, you are... - ANSWER-
Pushing against a spring and against air pressure to the brakes.
The air compressor is connected to the engine through... - ANSWER-
Gears or a V-belt
Which type of brake is the most common in commercial vehicles? -
ANSWER- S-cam brake
An application pressure gauge... - ANSWER- Shows how much air
pressure you are applying to the brakes.
All vehicles with air brakes are required to have a low pressure warning
signal. This could be... - ANSWER- A red light, wig wag mechanical arm or
a buzzer.
