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

What is a delivery line?

It delivers air to the foot valve

It delivers air to the foundation brakes

It delivers air to the reservoir

It delivers air to the discharge valve

2 / 30

What does air resistance create?

Pressure

Heat

Power

Backflow

3 / 30

What is referred to as brake lag time?

When the air reaches the wheel and applies the brake

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

The time between seeing the problem to responding

None of the above

4 / 30

Are air chambers made in different sizes?

No, unless the heat makes them swell

No, unless it's not an OEM part

Yes

5 / 30

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

Nothing

A socket wrench

An air brake slack adjuster

Dipstick

6 / 30

What is considered a long stroke brake chamber?

It has a longer pushrod but in a standard brake chamber

It's a stroke that takes longer to complete

None of the above

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

7 / 30

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

Hydraulic brakes

Manual brakes

Cable brakes

Disc brakes

8 / 30

Are air brakes more tolerant to small leaks?

Yes

Only while parked

At low speeds only

9 / 30

What is not a type of automatic slack adjustor?

Crewson Brunner

Granite

Rockwell

Haldex

10 / 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...

Plate assembly

Return spring

Camshaft

Pushrod

11 / 30

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

2000

1500

3000

2500

12 / 30

What is not part of the air brake chamber?

Camshaft

Plate assembly

Pushrod

Return spring

13 / 30

What's the purpose of the air brake chamber?

It moves the air into the brake lines

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

It compresses the air

It stores the condensed air

14 / 30

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

To circulate engine coolant 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 cold water through the compressor

Pulling over periodically to cool it down

15 / 30

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

Power

A vacuum

None of the above

Force

16 / 30

Why have air brakes?

They are capable of stopping heavy commercial vehicles safely

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

They can all be retrofitted on any vehicle

None of the above

17 / 30

What is compressed air?

None of the above

Air that is treated before being used

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

Where a cylinder uses less air than originally required

18 / 30

What is referred to as the foundation brake?

It refers to the base of the brake system

It refers to how the brakes are attached to the hub

None of the above

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

19 / 30

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

Manual brakes

Cable brakes

Hydraulic brakes

Air brakes

20 / 30

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

The slack adjuster

The force of the compressed air against the diaphragm

The force coming from the depressed pedal

Mechanical force

21 / 30

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

Use the parking brake

Use the secondary reservoir

Pump the brakes

Apply more pressure

22 / 30

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

The reservoir

The discharge line

The governor

The supply line

23 / 30

When does the compressor produce air?

Once the release valve is closed

As long as the engine is running

Once you turn on the compressor

Prior to starting the engine

24 / 30

What is referred to as brake fade?

When the brakes build up pressure to help you stop

When your brakes stop working properly because they're overheated

None of the above

When there is a gap in the air lines

25 / 30

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

The force the pads have against the drums

The force you apply when pushing down on the brake pedal

The force the pads have against the rotors

None of the above

26 / 30

Can brake drums expand and move away from the shoes?

Yes

Only on smaller vehicles

Only with buses

27 / 30

Squeezing air into a smaller space increases what?

The air's resistance

Provides more air for braking

None of the above

Saves time

28 / 30

How are long stroke brake chambers identified?

By their slotted-shaped inlet ports

They all look the same

By their square-shaped inlet ports

By their circle-shaped inlet ports

29 / 30

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

45 degrees

135 degrees

90 degrees

75 degrees

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 4/10 of a second

Approximately 2 full seconds

Approximately one full second

Approximately 1 1/2 seconds

Your score is

BC Air Brake Practice Test 01

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