BC Air Brake Practice Test 01

To start preparing, utilize the many study materials available online, including resources such as practice tests, diagrams, and instructional videos. This will help you gain a comprehensive understanding of the key components of air brake systems, such as the compressor, air tanks, and brake valves.

BC Air Brake Test 01

1 / 30

The force generated at the wheel to stop is a lot more than...

None of the above

The force the pads have against the drums

The force the pads have against the rotors

The force you apply when pushing down on the brake pedal

2 / 30

What is not a type of automatic slack adjustor?

Granite

Rockwell

Haldex

Crewson Brunner

3 / 30

When does the compressor produce air?

As long as the engine is running

Prior to starting the engine

Once the release valve is closed

Once you turn on the compressor

4 / 30

What does air resistance create?

Pressure

Backflow

Heat

Power

5 / 30

What is a delivery line?

It delivers air to the reservoir

It delivers air to the foot valve

It delivers air to the discharge valve

It delivers air to the foundation brakes

6 / 30

What is referred to as the foundation brake?

It refers to the mechanical parts of the brake system inside the wheel

It refers to how the brakes are attached to the hub

It refers to the base of the brake system

None of the above

7 / 30

What is considered a long stroke brake chamber?

It has a longer pushrod stroke than the pushrod of a standard brake chamber

It's a stroke that takes longer to complete

It has a longer pushrod but in a standard brake chamber

None of the above

8 / 30

Air brakes are used as an alternative to which type of brakes?

Manual brakes

Cable brakes

Disc brakes

Hydraulic brakes

9 / 30

As the piston moves down in the cylinder of the compressor, what does it create?

Force

Power

A vacuum

None of the above

10 / 30

What is referred to as brake fade?

When the brakes build up pressure to help you stop

None of the above

When there is a gap in the air lines

When your brakes stop working properly because they're overheated

11 / 30

How are long stroke brake chambers identified?

By their circle-shaped inlet ports

They all look the same

By their slotted-shaped inlet ports

By their square-shaped inlet ports

12 / 30

Through force multiplication, 100 psi of air pressure produces a pushrod force at how many pounds?

2500

3000

1500

2000

13 / 30

Why have air brakes?

They are the only system that uses anti-lock brake systems

They can all be retrofitted on any vehicle

None of the above

They are capable of stopping heavy commercial vehicles safely

14 / 30

Are air chambers made in different sizes?

Yes

No, unless it's not an OEM part

No, unless the heat makes them swell

15 / 30

If a compressor pumps the air, what controls the compressor?

The reservoir

The supply line

The governor

The discharge line

16 / 30

What is not part of the air brake chamber?

Pushrod

Plate assembly

Return spring

Camshaft

17 / 30

What is used to measure if the brake is within adjustment tolerance

Dipstick

An air brake slack adjuster

Nothing

A socket wrench

18 / 30

What's the purpose of the air brake chamber?

It converts the force of compressed air into a strong mechanical force through the pushrod and slack adjuster

It moves the air into the brake lines

It compresses the air

It stores the condensed air

19 / 30

What is compressed air?

None of the above

Air that can be compressed or squeezed into a much smaller space than it would normally occupy

Air that is treated before being used

Where a cylinder uses less air than originally required

20 / 30

To prevent the compressor from overheating, what's the most common method used on heavy trucks?

To circulate cold water through the compressor

Air fins on the side of the compressor will catch air while the vehicle is in motion to help cool it down

To circulate engine coolant through the compressor

Pulling over periodically to cool it down

21 / 30

Squeezing air into a smaller space increases what?

None of the above

Saves time

The air's resistance

Provides more air for braking

22 / 30

Can brake drums expand and move away from the shoes?

Yes

Only on smaller vehicles

Only with buses

23 / 30

Which brake system uses a much greater force to apply the brakes?

Cable brakes

Manual brakes

Air brakes

Hydraulic brakes

24 / 30

Which statement is false? The diaphragm construction is similar to a tire sidewall, consisting of a reinforced fabric core with a rubber coating with other main parts of...

Camshaft

Plate assembly

Return spring

Pushrod

25 / 30

What would you need to do to maintain the same braking force as brake fade increases?

Use the secondary reservoir

Apply more pressure

Use the parking brake

Pump the brakes

26 / 30

What causes the pushrod to extend out of the brake chamber?

Mechanical force

The force coming from the depressed pedal

The force of the compressed air against the diaphragm

The slack adjuster

27 / 30

At what angle is the position of the slack adjuster to the pushrod?

135 degrees

90 degrees

45 degrees

75 degrees

28 / 30

Are air brakes more tolerant to small leaks?

At low speeds only

Yes

Only while parked

29 / 30

What is referred to as brake lag time?

The time it takes to move from the accelerator to the brake pedal

None of the above

The time between seeing the problem to responding

When the air reaches the wheel and applies the brake

30 / 30

What is The typical brake lag time from when you apply the brake pedal (foot valve) to when the air reaches the wheel and applies the brake?

Approximately one full second

Approximately 2 full seconds

Approximately 4/10 of a second

Approximately 1 1/2 seconds

Your score is

BC Air Brake Practice Test 01

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