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Connecticut
Connecticut CDL Air Brakes 1
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Q.1
Submit
To ensure normal stopping power, drivers of vehicles equipped with a front brake limiting valve should:
Set the control to normal.
Set the control to the off position.
Set the control to neutral.
Keep the control at the halfway mark.
Q.2
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Before starting down a hill, be sure to:
Accelerate.
Switch into a high gear.
Sound your horn.
Switch into a low gear.
Q.3
Submit
What color are ABS malfunction lamps?
Orange
Yellow
Green
Blue
Q.4
Submit
A dual air brake system:
Has a single air brake system, but uses two sets of controls.
Has one air brake system for each side of the truck.
Has two brakes for each wheel.
Has two separate air brake systems, but uses a single set of controls.
Q.5
Submit
Brake fade is a result of:
Brakes being exposed to sunlight.
Brakes being exposed to moisture.
Excessive use of the brakes.
Q.6
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Water and compressor oil are usually found in the compressed air within an air brake system. Water and compressor oil:
Are necessary for the proper function of the air brake system.
Should be added if low.
Should be removed regularly.
Are not concerns.
Q.7
Submit
Before driving a vehicle with air brakes, you should ensure that the spring brakes come on automatically when:
Air pressure falls below 45 psi.
Air pressure falls below 20 psi.
Driving downhill.
Driving uphill.
Q.8
Submit
What must be on an air tank in an air-braked vehicle?
A check valve
A lock
A trap door
An oxidizer
Q.9
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If braking at a speed of 55 mph while driving on dry pavement, the brake lag can add ____ to your vehicle's total stopping distance.
32 feet
15 feet
50 feet
10 feet
Q.10
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An Anti-Lock Braking System (ABS):
Is not available for vehicles with air brakes.
Is not helpful in most driving situations.
Can help you maintain control when braking.
Q.11
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When leaving your vehicle unattended:
The parking brake must be always be used.
The parking brake should never be used.
Windows in the cab should be lowered.
Q.12
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If the low pressure warning light comes on while you are driving:
Braking will only be possible if there is still enough air in the tanks.
You can apply the brakes 14 times before the air in the system runs out.
You should continue to drive normally and check the brake system when it is convenient.
You should stay at least 100 feet away from other vehicles.
Q.13
Submit
What is brake lag?
The time required for the brakes to work after the brake pedal is pressed
The distance between the brake pedal and the floor
The amount of air pressure used to stop the vehicle
Q.14
Submit
If using spring brakes when hauling a heavy load, a complete stop will:
Be impossible.
Take a long time.
Take a short amount of time.
Q.15
Submit
Test the low pressure warning signal:
Once a month.
Once a week.
Twice a week.
Before every trip.
Q.16
Submit
Dollies equipped with ABS are required to have malfunction lamps located where?
On the rear
On the left side
On the front
On the top
Q.17
Submit
In a vehicle with dual air brakes, a leak in one system ____ the second system.
Will always affect
May not affect
Is caused by
Q.18
Submit
When a brake pedal is pressed and the S-cam is turned, the S-cam:
Presses the brake shoes against the inside of the brake drum.
Tightens the brake drum onto the axle.
Presses the brake lining against the wheel.
Releases air from the air tanks.
Q.19
Submit
When an S-cam turns inside a brake drum, the S-cam:
Presses the brake shoes against the inside of the brake drum.
Presses the brake shoes against the brake linings.
Presses the brake linings against the wheel axles.
Q.20
Submit
The parking brake should be:
Used whenever you park your vehicle.
Used while driving.
Set when driving in bad weather.
Removed.
Q.21
Submit
Air tank drains:
Should not be used in cold weather.
Are helpful to remove water and oil from the air tanks.
Are used to move air to the brakes.
Clean the air in the passenger compartment.
Q.22
Submit
What does the air compressor governor do?
Controls when the air compressor pumps air into the air storage tanks.
Controls how quickly air leaves the air storage tanks.
Controls the temperature of the air entering the air storage tanks.
Controls the temperature of the air leaving the air storage tanks.
Q.23
Submit
Vehicles equipped with Anti-Lock Braking Systems (ABS) have ____ malfunction lamps to indicate when the ABS is not working.
Green
Blue
Yellow
Q.24
Submit
If using the spring brakes while hauling a heavy load, a complete stop will:
Be impossible.
Take a long time.
Take a short amount of time.
Damage the brakes.
Q.25
Submit
If the low air pressure warning signal comes on, you should:
Continue driving, but have the brakes repaired within a week.
Pull over and inspect the brakes.
Phone a mechanic while driving.
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