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 reservoir

It delivers air to the discharge valve

It delivers air to the foundation brakes

2 / 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

When there is a gap in the air lines

None of the above

3 / 30

What is compressed air?

Air that is treated before being used

Where a cylinder uses less air than originally required

None of the above

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

4 / 30

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

Hydraulic brakes

Cable brakes

Manual brakes

Disc brakes

5 / 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 1 1/2 seconds

Approximately 2 full seconds

Approximately 4/10 of a second

Approximately one full second

6 / 30

Are air chambers made in different sizes?

Yes

No, unless it's not an OEM part

No, unless the heat makes them swell

7 / 30

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

135 degrees

45 degrees

90 degrees

75 degrees

8 / 30

Are air brakes more tolerant to small leaks?

Yes

At low speeds only

Only while parked

9 / 30

How are long stroke brake chambers identified?

By their square-shaped inlet ports

By their circle-shaped inlet ports

By their slotted-shaped inlet ports

They all look the same

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...

Return spring

Camshaft

Plate assembly

Pushrod

11 / 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 how the brakes are attached to the hub

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

12 / 30

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

1500

2500

2000

3000

13 / 30

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

The discharge line

The supply line

The governor

The reservoir

14 / 30

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

Nothing

Dipstick

An air brake slack adjuster

A socket wrench

15 / 30

When does the compressor produce air?

As long as the engine is running

Once the release valve is closed

Prior to starting the engine

Once you turn on the compressor

16 / 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

17 / 30

What does air resistance create?

Heat

Backflow

Pressure

Power

18 / 30

Why have air brakes?

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

They can all be retrofitted on any vehicle

They are capable of stopping heavy commercial vehicles safely

None of the above

19 / 30

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

Air brakes

Hydraulic brakes

Cable brakes

Manual brakes

20 / 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

21 / 30

Can brake drums expand and move away from the shoes?

Yes

Only with buses

Only on smaller vehicles

22 / 30

Squeezing air into a smaller space increases what?

Saves time

The air's resistance

None of the above

Provides more air for braking

23 / 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 rotors

The force the pads have against the drums

The force you apply when pushing down on the brake pedal

24 / 30

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

To circulate engine coolant through the compressor

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

Pulling over periodically to cool it down

25 / 30

What is not a type of automatic slack adjustor?

Haldex

Crewson Brunner

Granite

Rockwell

26 / 30

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

The slack adjuster

Mechanical force

The force of the compressed air against the diaphragm

The force coming from the depressed pedal

27 / 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

28 / 30

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

Power

A vacuum

Force

None of the above

29 / 30

What is not part of the air brake chamber?

Camshaft

Plate assembly

Pushrod

Return spring

30 / 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

Pump the brakes

Apply more pressure

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BC Air Brake Practice Test 01

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