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 not a type of automatic slack adjustor?

Rockwell

Crewson Brunner

Granite

Haldex

2 / 30

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

Cable brakes

Hydraulic brakes

Disc brakes

Manual brakes

3 / 30

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

The force you apply when pushing down on the brake pedal

The force the pads have against the rotors

None of the above

The force the pads have against the drums

4 / 30

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

An air brake slack adjuster

Nothing

A socket wrench

Dipstick

5 / 30

What is referred to as brake fade?

When your brakes stop working properly because they're overheated

When the brakes build up pressure to help you stop

None of the above

When there is a gap in the air lines

6 / 30

What is referred to as brake lag time?

The time between seeing the problem to responding

None of the above

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

When the air reaches the wheel and applies the brake

7 / 30

When does the compressor produce air?

Prior to starting the engine

Once you turn on the compressor

Once the release valve is closed

As long as the engine is running

8 / 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...

Return spring

Camshaft

Plate assembly

Pushrod

9 / 30

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

Force

Power

None of the above

A vacuum

10 / 30

What's the purpose of the air brake chamber?

It stores the condensed air

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

11 / 30

What is considered a long stroke brake chamber?

It's a stroke that takes longer to complete

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

None of the above

It has a longer pushrod but in a standard brake chamber

12 / 30

Can brake drums expand and move away from the shoes?

Only on smaller vehicles

Only with buses

Yes

13 / 30

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

The governor

The discharge line

The reservoir

The supply line

14 / 30

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

3000

1500

2500

2000

15 / 30

Why have air brakes?

They are capable of stopping heavy commercial vehicles safely

None of the above

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

They can all be retrofitted on any vehicle

16 / 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

17 / 30

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

45 degrees

75 degrees

135 degrees

90 degrees

18 / 30

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

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

To circulate engine coolant through the compressor

Pulling over periodically to cool it down

19 / 30

What is referred to as the foundation brake?

It refers to the base of the brake system

None of the above

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

It refers to how the brakes are attached to the hub

20 / 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 one full second

Approximately 1 1/2 seconds

Approximately 2 full seconds

21 / 30

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

Use the secondary reservoir

Use the parking brake

Apply more pressure

Pump the brakes

22 / 30

Squeezing air into a smaller space increases what?

Saves time

None of the above

The air's resistance

Provides more air for braking

23 / 30

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

Mechanical force

The force coming from the depressed pedal

The slack adjuster

The force of the compressed air against the diaphragm

24 / 30

Are air chambers made in different sizes?

No, unless it's not an OEM part

Yes

No, unless the heat makes them swell

25 / 30

What does air resistance create?

Heat

Pressure

Power

Backflow

26 / 30

What is not part of the air brake chamber?

Return spring

Plate assembly

Camshaft

Pushrod

27 / 30

What is compressed air?

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

None of the above

Where a cylinder uses less air than originally required

Air that is treated before being used

28 / 30

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

Manual brakes

Cable brakes

Hydraulic brakes

Air brakes

29 / 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

30 / 30

Are air brakes more tolerant to small leaks?

Only while parked

At low speeds only

Yes

Your score is

BC Air Brake Practice Test 01

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