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

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

To circulate cold water through the compressor

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

Pulling over periodically to cool it down

2 / 30

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

Cable brakes

Manual brakes

Air brakes

Hydraulic brakes

3 / 30

When does the compressor produce air?

Prior to starting the engine

As long as the engine is running

Once you turn on the compressor

Once the release valve is closed

4 / 30

Squeezing air into a smaller space increases what?

The air's resistance

Saves time

Provides more air for braking

None of the above

5 / 30

What is not a type of automatic slack adjustor?

Rockwell

Crewson Brunner

Haldex

Granite

6 / 30

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

The force the pads have against the rotors

None of the above

The force the pads have against the drums

The force you apply when pushing down on the brake pedal

7 / 30

What is not part of the air brake chamber?

Return spring

Camshaft

Pushrod

Plate assembly

8 / 30

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

Power

A vacuum

Force

None of the above

9 / 30

What's the purpose of the air brake chamber?

It stores the condensed air

It compresses the air

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

10 / 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

11 / 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

12 / 30

Are air chambers made in different sizes?

No, unless it's not an OEM part

No, unless the heat makes them swell

Yes

13 / 30

What is a delivery line?

It delivers air to the reservoir

It delivers air to the foot valve

It delivers air to the foundation brakes

It delivers air to the discharge valve

14 / 30

Why have air brakes?

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

They are capable of stopping heavy commercial vehicles safely

None of the above

They can all be retrofitted on any vehicle

15 / 30

What is referred to as the foundation brake?

It refers to the base of the brake system

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

None of the above

It refers to how the brakes are attached to the hub

16 / 30

How are long stroke brake chambers identified?

By their slotted-shaped inlet ports

By their circle-shaped inlet ports

By their square-shaped inlet ports

They all look the same

17 / 30

Are air brakes more tolerant to small leaks?

Yes

Only while parked

At low speeds only

18 / 30

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

Nothing

A socket wrench

An air brake slack adjuster

Dipstick

19 / 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

20 / 30

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

The governor

The reservoir

The supply line

The discharge line

21 / 30

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

Mechanical force

The slack adjuster

The force coming from the depressed pedal

The force of the compressed air against the diaphragm

22 / 30

Can brake drums expand and move away from the shoes?

Only with buses

Only on smaller vehicles

Yes

23 / 30

What does air resistance create?

Pressure

Power

Heat

Backflow

24 / 30

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

Hydraulic brakes

Cable brakes

Manual brakes

Disc brakes

25 / 30

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

Use the parking brake

Pump the brakes

Apply more pressure

Use the secondary reservoir

26 / 30

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

75 degrees

45 degrees

90 degrees

135 degrees

27 / 30

What is referred to as brake lag time?

None of the above

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

The time between seeing the problem to responding

When the air reaches the wheel and applies the brake

28 / 30

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

1500

2500

3000

2000

29 / 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

30 / 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

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BC Air Brake Practice Test 01

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