Wyoming CDL Combination 2 - DMV Written Test Questions with Answers - MCQGeeks.com

Q.1

If you are backing and become unsure about your path of travel, you should:

Continue backing.
Stop and get out to look.
Continue backing, but more slowly than before.

Q.2

Pushing in the trailer air supply control will:

Supply the trailer with air.
Deactivate the air brakes.
Prevent the vehicle from skidding.

Q.3

What is the Johnson bar?

A hand valve that works the trailer brakes
A valve that indicates the fuel level
A valve that limits the amount of cargo

Q.4

The trailer hand valve should be used:

To accelerate in rural areas.
Only to test the trailer brakes.
Together with the brake pedal.
On slippery surfaces.

Q.5

How much space should be between the upper and lower fifth wheel?

About five inches of space
A maximum of two inches of space
No space

Q.6

Push in the trailer air supply control to:

Activate the emergency brakes.
Deactivate the air brakes.
Sound the horn.
Supply the trailer with air.

Q.7

An air supply control in its "emergency" position will:

Turn on the air supply.
Apply the trailer emergency brakes.
Prevent a skid.
Accelerate the vehicle.

Q.8

What does the tractor protection valve do?

Protects the tractor from being stolen
Protects the tractor from exceeding a set speed
Keeps air in the braking system, should the trailer break away or develop a leak
Ensures oil adequately lubricates the engine

Q.9

When backing up to couple a trailer, you should position the tractor:

At a 90-degree angle in front of the trailer.
Directly in front of the trailer.
At a 30-degree angle in front of the trailer.
At a 60-degree angle in front of the trailer.

Q.10

What is the tractor protection valve?

A valve that keeps air in the brake system should a bad leak occur
A valve that prevents the trailer from being accidentally released
A valve that prevents the vehicle from going too fast

Q.11

Bobtail tractors are ____ to stop than tractors attached to full semitrailers.

Quicker
Easier
More difficult

Q.12

Trailers with low underneath clearance can present challenges when driving over:

Bridges.
Railroad tracks.
Overpasses.

Q.13

Operating a combination vehicle usually requires ____ operating a single vehicle.

Less skill than
About the same level of skill as
More skill than
Exactly the same level of skill as

Q.14

Compared to other commercial motor vehicles, combination vehicles need more space on the road because they are longer and they:

Need more space to turn and stop.
Drive more slowly.
Are twice the width.
Swerve more often.

Q.15

To help prevent a rollover, cargo should be:

Placed as high as possible inside a trailer.
Placed as low as possible inside a trailer.
Placed on the driver’s side of a trailer.

Q.16

If the trailer begins to skid, it is best to:

Release the brakes.
Accelerate.
Quickly turn the steering wheel one way, then the other.
Brake.

Q.17

When the wheels of a trailer lock up:

The trailer will be drivable.
The trailer may swing around.
The vehicle will maintain steering.

Q.18

Driving a combination vehicle ____ than driving a single vehicle.

Is easier
Requires more driving skill
Is better for training
Is safer in inclement weather

Q.19

Trailers built before 1975 are:

Required to have spring brakes.
Not required to have spring brakes.
Unsafe to drive.
Prohibited from public roadways.

Q.20

Shut-off valves:

Prevent air from escaping air brake systems.
Prevent air from entering air brake systems.
Override vehicles that are out of control.

0 h : 0 m : 1 s