TEXAS CDL AIR BRAKERS,TX CDL#3- AIR BRAKERS-
SECTION 5,CDL AIR BRAKERS 2 NEWEST 2024
LATEST EXAM 2024 ACTUAL QUESTIONS AND
CORRECT DETAILED ANSWERS|GRADED A+
The brake system that applies and releases the brakes when
the driver uses the brake pedal is the _________brake system
- ANSWER-service
Before driving a truck or bus with dual air brake system the
pressure in each system should be at least _______psi -
ANSWER-100psi
Your truck or bus has a dual air brake system if a low air
pressure warning comes on for only one system what should
you do - ANSWER-stop right away and safely park the truck,
continue only after the system is fixed
What happens when your brake drums get very hot -
ANSWER-they expand
How often should the air tanks be drained - ANSWER-daily
,An air application gauge shows you - ANSWER-how much air
pressure you are applying to the brakes
The difference between controlled braking and stab braking is
__________ - ANSWER-controlled braking does not lock the
wheels stab braking involves locking the wheels
Front brake limiting valves reduce the air pressure applied to
the front brakes by - ANSWER-1/2
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.
To test service brakes you should... - ANSWER-Release the
parking brake, move forward slowly and depress brakes.
Stab braking occurs when you... - ANSWER-1. Press on a
brake pedal as hard as you can. 2. Release the brakes when
the wheels lock up. 3. Apply the brakes when the wheels start
rolling.
Air brakes take longer to stop than hydraulic brakes because...
- ANSWER-It takes longer for the air to flow through the lines.
SECTION 5,CDL AIR BRAKERS 2 NEWEST 2024
LATEST EXAM 2024 ACTUAL QUESTIONS AND
CORRECT DETAILED ANSWERS|GRADED A+
The brake system that applies and releases the brakes when
the driver uses the brake pedal is the _________brake system
- ANSWER-service
Before driving a truck or bus with dual air brake system the
pressure in each system should be at least _______psi -
ANSWER-100psi
Your truck or bus has a dual air brake system if a low air
pressure warning comes on for only one system what should
you do - ANSWER-stop right away and safely park the truck,
continue only after the system is fixed
What happens when your brake drums get very hot -
ANSWER-they expand
How often should the air tanks be drained - ANSWER-daily
,An air application gauge shows you - ANSWER-how much air
pressure you are applying to the brakes
The difference between controlled braking and stab braking is
__________ - ANSWER-controlled braking does not lock the
wheels stab braking involves locking the wheels
Front brake limiting valves reduce the air pressure applied to
the front brakes by - ANSWER-1/2
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.
To test service brakes you should... - ANSWER-Release the
parking brake, move forward slowly and depress brakes.
Stab braking occurs when you... - ANSWER-1. Press on a
brake pedal as hard as you can. 2. Release the brakes when
the wheels lock up. 3. Apply the brakes when the wheels start
rolling.
Air brakes take longer to stop than hydraulic brakes because...
- ANSWER-It takes longer for the air to flow through the lines.
