Utah CDL Air Brakes 2 - DMV Written Test Questions with Answers - MCQGeeks.com

Q.1

If the safety relief valve in an air brake system is releasing air:

You should not be concerned as this is a normal process.
There is something wrong with the brakes.
The valve is operational.

Q.2

What must be on an air tank in an air-braked vehicle?

A check valve
A lock
A trap door
An oxidizer

Q.3

What is removed when an air tank is drained?

Water and oil
Ammonia
Wood
Chlorine

Q.4

When the spring brakes are on, you should never:

Turn on the lights.
Turn off the vehicle.
Push down the brake pedal.

Q.5

Emergency brakes:

Are not required on trucks.
Are only required on trailers.
Are required on tractors.
Are optional.

Q.6

What happens if brakes become too hot?

They will become too smooth.
They will harden.
They may stop working.
The air compressor will kick in to cool the brakes

Q.7

A low air pressure warning signal:

Is not recommended on vehicles with air brakes.
Is required on vehicles with air brakes.
Is optional on vehicles with air brakes.

Q.8

What helps prevent wheel lockup when braking?

An Anti-Lock Braking System (ABS)
Air brakes
An alternator

Q.9

What color are ABS malfunction lamps?

Orange
Yellow
Green
Blue

Q.10

You should ____ if the low pressure warning signal activates while you are driving.

Stop where you are and park
Exit the roadway as soon as safely possible
Continue driving normally

Q.11

Brakes may get out of adjustment:

If they are too hot.
In colder weather.
If they are used.
If they get wet.

Q.12

What kind of force must emergency brakes use?

Air pressure
Mechanical
Heavy
Electrical

Q.13

When traveling down a steep downgrade, the best way to use your brakes is to:

Ride the brakes all the way down the hill.
Apply the brakes for a few seconds, then release the brakes for a few seconds. Continue to repeat these steps as you travel down the hill.
Apply the brakes only near the bottom of the downgrade.
Apply consistent pressure to the brake pedal all the way down the hill.

Q.14

Most heavy-duty vehicles use ____ air brake systems.

Single
Dual
Triple
Quad

Q.15

In a dual air brake system:

Air tanks are shared between both systems.
Each system has its own air tanks.
You must designate which system you are using.

Q.16

What kind of brakes do most newer heavy-duty trucks use?

Single air brakes
Dual air brakes
Triple air brakes

Q.17

The air storage tanks:

Hold only enough air for one braking cycle.
Hold enough air for the brakes to be used several times if the compressor stops working.
Do not hold air unless there is an emergency.

Q.18

Truck tractors with air brakes built on or after March 1, 1997 must have:

An Anti-Lock Braking System (ABS).
Bluetooth.
A GPS.

Q.19

In a dual air brake system:

Each system has separate air tanks, hoses, and lines.
The systems share air tanks, but each has its own separate hoses and lines.
Each system uses the same lines and hoses.
One system is the main braking system and a second system is ready to be used if the first one fails.

Q.20

What can happen if parking brakes are used in very wet weather with temperatures below freezing?

The brakes will squeak.
The brakes may freeze so the vehicle cannot move.
The brakes may suddenly release by themselves.
The brakes may become too smooth to be used.

Q.21

When stopping in an emergency situation, you should:

Veer your trailer to the right and stop.
Stop in a straight line.
Veer your trailer to the left and stop.

Q.22

In a vehicle with dual parking control valves, a separate air tank can be used:

To make the air brakes work more effectively.
To temporarily release the spring brakes.
To charge the brakes on the rear trailer.

Q.23

Brake fade is a result of:

Exposure to sunlight.
Exposure to moisture.
Excessive use.
Not using the brakes enough.

Q.24

Brakes can get out of adjustment:

If they are hot.
During the winter.
If they are used at all.
If brakes on one side are used more often than brakes on the other side.

Q.25

The ____ tells a driver how much pressure is in the air tanks.

Application pressure gauge
Air compressor governor
Supply pressure gauge
Drum brake

0 h : 0 m : 1 s