Exam (elaborations)
Texas CDL Air Brakes Questions & answers with Complete solutions | Latest edition
- Course
- Study guid
- Institution
- Study Guid
Texas CDL Air Brakes Questions & answers with Complete solutions | Latest edition
[Show more]
Content preview
Texas CDL Air BrakesAir brake systems combine what three different systems? - ANS-Service brakes,
parking brakes and emergency brakes.
When should you drain the air tanks? - ANS-After every working day.
Why drain water from the compressed air tanks? - ANS-Water can freeze in cold
weather and cause brake failure.
Air brake equipped vehicles must have: - ANS-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? - ANS-Spring pressure.
What makes the total stopping distance for air brakes longer than that for hydraulic
brakes? - ANS-Brake lag distance.
The first thing you should do when the low air pressure warning comes on? - ANS-Stop
and safely park ASAP.
The braking power of the spring brakes: - ANS-Depends on the adjustment of the
service brakes.
The air compressor governor controls what? - ANS-When air is pumped into the air
tanks.
The application pressure gauge shows the driver how much pressure: - ANS-Is being
applied to the brakes.
When you apply pressure to the brake pedal, you are... - ANS-Pushing against a spring
and against air pressure to the brakes.
The air compressor is connected to the engine through... - ANS-Gears or a V-belt
Which type of brake is the most common in commercial vehicles? - ANS-S-cam brake
, An application pressure gauge... - ANS-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... - ANS-A red light, wig wag mechanical arm or a buzzer.
To test service brakes you should... - ANS-Release the parking brake, move forward
slowly and depress brakes.
Stab braking occurs when you... - ANS-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... - ANS-It takes longer for
the air to flow through the lines.
The proper way to go down long grades is to... - ANS-Apply brakes just hard enough to
reduce speed to 5 mph below safe speed then release until back to safe speed and
repeat process.
When should you avoid using the parking brake? - ANS-When the brakes are hot.
If your vehicle has an alcohol evaporator, everyday during cold weather you should: -
ANS-Check and fill the alcohol level.
During normal driving, spring brakes are usually he'd back by what? - ANS-Air pressure
In air brake vehicles, the parking brakes should be used when? - ANS-Whenever the
vehicle is parked.
The brake pedal in an air brake system does what? - ANS-Controls the air pressure
applied to put on the brakes.
If your bus has dual parking control valves it means that you can use pressure from a
separate tank to: - ANS-Release the spring brakes to move a short distance.
A straight truck or bus air brake system should not leak at a rate of more than ____ PSI
per minute with the engine off and the brakes released. - ANS-2
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller EXAMQA. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for CA$14.67. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
77764 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now
