BC Air Brake Practice Test 03

Taking the BC air brake practice test can be a nerve-wracking experience for those wanting to obtain their air brake endorsement. However, with proper preparation and practice, passing the official exam with flying colors is achievable. It is recommended to use certified training materials and take advantage of online practice tests to gain an in-depth understanding of the air brake system and regulations.

BC Air Brake Test 03

1 / 30

Other than a leak, what could cause low-air pressure?

If you apply the brakes repeatedly and have used up the air supply more rapidly than the compressor can replenish it

If the air lines are too thin

If the compressor is overheating

If the compressor is too small

2 / 30

What do one-way check valves do?

They allow air to be exhausted through ports

They allow air to flow from the supply reservoir to the primary and secondary reservoirs

None of the above

They allow air to flow in both directions

3 / 30

What is the most common type of parking brake in an air brake system?

The hydraulic parking brake

The air parking brake

The cable parking brake

The spring parking brake

4 / 30

What's another name for a drain valve?

Drain cocks

Drain holes

Drain stems

Drain releases

5 / 30

What is another name for manually releasing an applied spring parking brake?

Pushing

Sweeping

Caging

Pulling

6 / 30

What is the second type of parking brake in an air brake system known as?

Cable

Air-over hydraulic

None of the above

Safety actuator

7 / 30

At what point does the low-air warning device come on?

When air pressure drops below 20 psi

When air pressure drops below 80 psi

When air pressure drops below 50 psi

When air pressure drops below 60 psi

8 / 30

What type of vehicle are safety actuators typically used on?

Buses and highway coaches

Fire trucks

Dump trucks

Large tractor trailers

9 / 30

What is another name for the foot brake pedal?

Bar

Treadle

Push rod

Thread

10 / 30

In a dual air brake system, where is the air from the primary tank applied to?

To both front and rear axle brakes

To the rear axle brakes

To the front axle brakes

To whichever brakes need to be applied first

11 / 30

In a dual air brake system, when brakes are applied, which section activates first?

Both sections are activated

Secondary tank first

Primary tank first

It doesn't matter as long as it works

12 / 30

Which reservoir usually has the most contaminants in it?

The supply reservoir

The secondary reservoir

The primary reservoir

They all have the same amount

13 / 30

In a dual air brake system, if one of the system totally fails, is the driver able to make a controlled stop?

Not unless the parking/emergency brake is also applied

Yes, but it will be much longer

Yes

14 / 30

What are the problems using the air brakes for parking?

None of the above

Not enough air to hold the vehicle

The air will eventually leave the lines

Any loss of air pressure and a possible rollaway collision could happen

15 / 30

Some older vehicles are equipped with a low-air warning device near the top of the windshield that drops into the driver's view when air pressure drops. What is this?

A wig-wag

A woggle

A mig-mag

A toggle

16 / 30

What is the name of the line that air flows from the foot valve to the foundation brakes?

Supply line

Discharge line

Delivery line

Governor line

17 / 30

What is meant by compounding air brakes?

When the park brake is not working

When the service brake is not working

When the park brake is released at the same time as the service brake

When a service brake application is made with the park brake still applied

18 / 30

What is the purpose of the relay valve?

To push air through the lines

To reduce the lag time when the brakes are applied, and when they're released

To relay computerized messages from the brakes to the gauges

To help apply the brakes quicker

19 / 30

How often should you drain reservoirs?

Weekly

Monthly

Every 48 hours

Daily

20 / 30

Where is the relay valve typically installed?

Beside the governor

Between the reservoir and the rear brake chambers

In front of the foot valve

Right beside the quick release valve

21 / 30

If the low-air pressure warning light comes on, what should you do?

Allow the compressor to build up more air before you stop

Pull over and stop

None of the above

Keep going but allow five times more to stop

22 / 30

What happens when the driver releases the foot valve?

Air pressure build back up

Air pressure in the brake chambers exhausts into the atmosphere

None of the above

Air pressure in the brake lines remains constant

23 / 30

Typically, where is the low-air warning device connected to?

The biggest tank

The primary reservoir

The secondary reservoir

The supply reservoir

24 / 30

What does a quick release valve do?

It controls the air flow

None of the above

It allows the brakes to release quickly and fully, by allowing the pressurized air to exhaust near the brake chambers

It stops the flow of air going into the reservoirs

25 / 30

When should caging of park brake actually be done?

Once you've traveled 160 km during that trip

Every 500 km

Prior to leaving on your daily trip

Only in an emergency

26 / 30

How long have dual air brake systems been in use?

Since early 2000's

Since 1992

The last ten years

Since the mid-1970'

27 / 30

Does the foot control valve have the ability to maintain the application pressure that you've chosen, even if there is a small leak downstream from the foot valve?

Yes

Up to 5 seconds maximum

Just for 2 to 3 seconds

28 / 30

What is the purpose of a dual air brake system?

It allows the brake system to be divided into two independent sections with each section having its own supply, delivery, and exhaust ports

No advantage whatsoever

Works better with tandem wheels

They are in all new vehicles

29 / 30

Many vehicles have a single gauge with two needles, indicating the pressure in which reservoirs?

Supply and primary reservoir

Supply reservoir only but use for psi and kPa

Primary and secondary reservoirs

Supply reservoir and secondary reservoirs

30 / 30

If there are two reservoirs, how many pressure gauges are there?

Two

One

Four

Three

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BC Air Brake Practice Test 03

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