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

Q.1

The leakage rate for a single vehicle with air brakes should be no more than ____ in one minute during a static leakage test.

1 psi
2 psi
3 psi

Q.2

An air compressor governor controls:

When the air compressor pumps air into the air storage tanks.
How fast air is pumped into the air storage tanks.
The temperature of the air pumped into the air storage tanks.

Q.3

An application pressure gauge shows:

How much air pressure is being applied to the brakes.
How much air pressure is available.
How much air pressure is required to stop a vehicle.

Q.4

Failing to drain air tanks could result in:

Water accumulations freezing and causing brake failure.
Squishy brakes.
Too much air collecting in the tanks.

Q.5

When experiencing cold weather, be sure to check your vehicle's alcohol evaporator:

Every three hours.
Every day.
Every other week.

Q.6

Foundation brakes are used:

Only on the front wheels of a vehicle.
Only on the rear wheels of a vehicle.
On each wheel of a vehicle.

Q.7

Using an Anti-Lock Braking System (ABS):

Is required in some states.
Shortens brake response time.
Provides additional control.

Q.8

A slack adjuster should move no more than ____ from where it is attached to the push rod.

Two inches
Five inches
One inch

Q.9

What can happen if the air pressure gets too low in an air brake system?

The brakes may squeak.
The brakes may stop working.
The brakes may be sluggish.

Q.10

Brakes can get out of adjustment quickly, especially:

If they are hot.
In the winter time.
If they are used frequently.

Q.11

Air tank drains should:

Only be used by mechanics.
Only be used when it is wet outside.
Be used to drain the tanks completely.

Q.12

If the safety relief valve in the air brake system releases air:

The compressor needs more air.
The air pressure has become too high.
The brakes are fully operational.

Q.13

What should happen before the air pressure in an air brake system tank falls below 55 psi?

The warning light should activate.
The vehicle will be unable to shift out of gear.
The front lights should flash.

Q.14

Once the air tanks are at an air pressure level of 125 psi, the air compressor governor will:

Stop the compressor from pumping air.
Release air from the tanks.
Begin pumping air into the tanks.

Q.15

Lights that indicate that anti-lock brakes are not working are:

Gray.
Blue.
Yellow.

Q.16

If the safety relief valve in the air brake system releases air:

The compressor needs more air.
There is something wrong with the brakes.
You may continue driving.

Q.17

What color malfunction lamps do vehicles equipped with ABS have?

Green
Yellow
Blue

Q.18

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

Single air brakes
Dual air brakes
Triple air brakes

Q.19

When the spring brakes are on, you should never:

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

Q.20

Air storage tanks:

Are not allowed on a vehicle.
Hold compressed air for the brakes.
Should be drained of excess air after every trip.

Q.21

If you are braking on dry pavement while traveling at 55 mph, how much distance will brake lag add to your overall stopping distance?

32 feet
45 feet
20 feet

Q.22

What kind of force do emergency brakes use?

Air pressure
Mechanical
Heavy

Q.23

A driver can rely on front wheel braking to work:

On dry roadways only.
Under all conditions.
Under all conditions, except for snow.

Q.24

What color light indicates a vehicle's ABS is not working?

Green
Blue
Yellow

Q.25

When operating a vehicle with a dual air brake system, the driver should:

Let the vehicle warm up before driving to ensure that the fuel reaches the engine.
Let the air compressor build up a minimum of 100 psi pressure in the primary and secondary systems before driving.
Begin driving just after the vehicle starts.

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