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Delaware
Delaware CDL Knowledge Test Class B 1
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Q.1
Submit
Which of the following is not acceptable emergency equipment?
Three red reflective triangles
Six fuses
Three liquid burning flares
Four yellow squares
Q.2
Submit
When inspecting your brakes, a slack adjuster should move ____ from where it is attached to the push rod.
At least three inches
More than two inches
Up to five inches
No more than one inch
Q.3
Submit
Applying the brake pedal causes air pressure to activate an electric switch and:
Turn off the brake lights.
Turn on the low pressure warning light.
Turn on the brake lights.
Turn off the low pressure warning light.
Q.4
Submit
A vehicle that is smaller than your vehicle:
Will usually be able to stop faster than your vehicle.
Will usually take more time to stop than your vehicle.
Will take about the same amount of time to stop as your vehicle.
Q.5
Submit
If unable to tell if the road is becoming icy and slippery, a driver:
Should try guessing.
May open their window and feel the front of the side mirror for ice.
Should look at the road closely.
Q.6
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.
Q.7
Submit
Dry bulk tanks require special care because:
They have low centers of gravity.
They have high centers of gravity.
Loads are usually stable.
They are usually overloaded.
Q.8
Submit
If a truck is equipped, a trailer brake hand valve can be used to:
Add fuel to the truck.
Prevent the truck from rolling back when being started from a stop.
Check the engine oil level.
Q.9
Submit
When taking the basic vehicle control skills test, failing to exit your vehicle properly during any exercise will result in:
Failure of only that exercise.
An extra point against your final score.
Automatic failure of the basic vehicle control skills test.
Q.10
Submit
On a truck with air brakes, the braking system’s air compressor:
Pumps air into the air storage tanks.
Fills the tires.
Moves air to the back of the truck.
Cleans the brakes.
Q.11
Submit
Parking brakes:
Should not be tested.
Should be tested, but only after driving a distance.
Should be tested before a drive.
Should be tested on a hill.
Q.12
Submit
If convicted of a traffic violation, you must inform your employer:
Within three hours.
Within a week.
Within 30 days.
Q.13
Submit
During a walk-around inspection, ensure there are no cracks on the brake drums that are more than ____ of the width of the friction area.
One half
One quarter
One third
One tenth
Q.14
Submit
____ is an example of required emergency equipment.
A spare electrical fuse
A loud horn
A battery-operated flashlight
Q.15
Submit
Why do you need to drain air tanks regularly?
Because the air gets old and needs to be replaced
Because compressed air contains some water which must be drained from the tanks
To allow for a change in air pressure
To remove bad air from the tanks
Q.16
Submit
If driving a school bus, your four-way flashers should:
Be activated before crossing railroad tracks.
Never be used.
Only be used after crossing railroad tracks.
Only be used near railroad tracks if a train is approaching.
Q.17
Submit
Which of the following surfaces provides the least amount of traction?
Ice that is dry
Ice that is wet
Wet pavement
Dry pavement
Q.18
Submit
The most important reason to inspect your vehicle before a trip is:
To ensure safety.
To maximize gas mileage.
To wake up before the drive.
To fill up time.
Q.19
Submit
Which of the following may result in an applicant being denied a hazardous materials endorsement?
They are not a lawful permanent resident of the United States.
They have had a speeding conviction within the previous three years.
They did not correctly answer every question on the written hazardous materials endorsement test.
They did not pass the written hazardous materials endorsement test on the first attempt.
Q.20
Submit
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.21
Submit
When only the tractor is equipped with an Anti-Lock Braking System (ABS):
There is a decreased risk of jackknifing.
There is an increased risk of jackknifing.
The brakes will not work as effectively as they would without ABS.
The brakes will become more sensitive.
Q.22
Submit
What is Gross Vehicle Weight (GVW)?
The total weight of a vehicle and its load
The total weight of a vehicle's tractor
The total weight of a loaded trailer
The weight of a tractor and trailer, before adding in the load
Q.23
Submit
When transporting a load, the cargo should be inspected:
Only at the beginning of a drive.
Only after driving a long distance.
After every break.
Q.24
Submit
When a vehicle is started, warning lights and buzzers:
Should stay on for several minutes.
Should turn off within a few seconds.
Should stay on until manually turned off.
Should not come on.
Q.25
Submit
The two indicators that determine when you should upshift are:
Engine speed and road speed.
Other trucks and road conditions.
Timing and road position.
Oil pressure and air brake pressure.
Q.26
Submit
Fuel records supporting IFTA quarterly fuel use tax returns must be kept by carriers for:
One year.
Two years.
Three years.
Four years.
Q.27
Submit
The application pressure gauge:
Shows how much air pressure is being applied to the brakes.
Shows the temperature of air being used in the braking system.
Shows the pressure of the air coming from the compressor.
Shows the number of times the brakes have been used.
Q.28
Submit
Which of the following is not a type of tie-down equipment?
Ropes
Straps
Velcro
Q.29
Submit
Scan the road ____ ahead of your vehicle.
Two to three seconds
Five to six seconds
12 to 15 seconds
Q.30
Submit
If the coolant temperature gauge goes above the highest safe temperature, you should:
Continue to drive.
Pull over and figure out what's wrong.
Run the air conditioner.
Q.31
Submit
If driving a vehicle with a manual transmission, you can prevent your vehicle from rolling backward when starting from a stop by:
Partly engaging the clutch before removing your foot from the brake pedal.
Placing the vehicle in reverse before moving forward.
Fully engaging the clutch before removing your foot from the brake pedal.
Placing the vehicle in neutral before moving forward.
Q.32
Submit
What is black ice?
A thick layer of ice on the road
A thin layer of ice on the road
Ice that is black from debris on the road
Ice that is easily seen
Q.33
Submit
When conducting a vehicle inspection, you will need to identify all of the following, except:
The power steering belt.
The water pump belt.
The alternator belt.
The water compressor belt.
Q.34
Submit
Which of the following is not an example of a driver who might be a hazard?
A driver operating a vehicle without first scraping ice off the windshield
The operator of a rental truck
The driver of a station wagon with items covering the back windows
A person operating a pick-up truck
Q.35
Submit
A modulating control valve can control the:
Spring brakes.
Landing gear.
Air brakes.
Anti-lock braking system (ABS).
Q.36
Submit
Don't spend too much time looking at a single mirror because:
Conditions can change quickly.
Looking at mirrors can make you drowsy.
It can result in you driving a long distance without looking at the road.
The mirror may not provide an accurate view of the road.
Q.37
Submit
When checking its automatic transmission fluid, the vehicle:
Should be placed on an incline.
Should be placed on a decline.
May have to be running.
Should be lifted with a jack.
Q.38
Submit
Air tank drains:
Allow rain water to enter the tanks.
Are used to drain water and oil from the tanks.
Should never be opened.
Must remain open while driving.
Q.39
Submit
If approaching a railroad crossing while driving a placarded vehicle, you should always:
Activate your four-way flashers.
Stop within five feet of the tracks.
Change gears while on the tracks.
Change lanes while on the tracks.
Q.40
Submit
When driving, you should stop and take a break ____ to avoid becoming too tired.
Every half hour
Every hour
Every two hours
Every six hours
Q.41
Submit
On a leaf spring, the leaves:
May be broken.
Are not required.
Should not be broken.
Should shift.
Q.42
Submit
If an aggressive driver is involved in a crash down the road, you should:
Pull over and yell at them.
Stop after the crash scene and report the other driver’s behavior to police.
Block the driver in with your vehicle.
Q.43
Submit
If convicted of any traffic violations, excluding parking violations, you must:
Notify your employer within 30 days.
Place a sign on the back of your vehicle noting the conviction.
Forfeit your CDL for six months.
Q.44
Submit
If a vehicle is equipped with power steering, the hoses should be checked:
For leaks.
To ensure that they are still clear.
To ensure that they are connected to the battery.
To ensure that they contain the proper amount of play.
Q.45
Submit
When asked to complete a conventional parallel parking maneuver, you should:
Pass the parking space while backing, then pull forward into it.
Pull forward past the parking space, then back into it.
Pull forward into the parking space without passing it first.
Back into the parking space without passing it first.
Q.46
Submit
If a load is 40 feet long, it must be secured by a minimum of ____ tie-downs.
Two
Three
Four
Five
Q.47
Submit
Why are multi-speed axles and auxiliary transmissions used?
To make a vehicle operate more smoothly
To provide extra gears
To improve a vehicle's gas mileage
Q.48
Submit
If there is a fire in your vehicle, you should not:
Park in an area away from buildings, trees, brush, and other vehicles.
Pull into a service station.
Notify emergency services of your problem and your location.
Q.49
Submit
During a basic vehicle control skills test, what is considered an encroachment?
A driver placing the vehicle in neutral and applying the parking brake.
The vehicle touching an exercise boundary line.
A driver properly completing an exercise in the skills test.
An applicant trying to bribe the examiner.
Q.50
Submit
Belts in the engine compartment should be:
Frayed.
Tight.
Greasy.
Easy to slide off.
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