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

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

When air pressure drops below 60 psi

When air pressure drops below 80 psi

When air pressure drops below 50 psi

When air pressure drops below 20 psi

2 / 30

How long have dual air brake systems been in use?

The last ten years

Since 1992

Since the mid-1970'

Since early 2000's

3 / 30

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

If the compressor is overheating

If the air lines are too thin

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

If the compressor is too small

4 / 30

What type of vehicle are safety actuators typically used on?

Buses and highway coaches

Dump trucks

Large tractor trailers

Fire trucks

5 / 30

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

The secondary reservoir

The primary reservoir

The biggest tank

The supply reservoir

6 / 30

Which reservoir usually has the most contaminants in it?

They all have the same amount

The supply reservoir

The primary reservoir

The secondary reservoir

7 / 30

What's another name for a drain valve?

Drain releases

Drain stems

Drain cocks

Drain holes

8 / 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

9 / 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

10 / 30

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

Supply reservoir and secondary reservoirs

Primary and secondary reservoirs

Supply and primary reservoir

Supply reservoir only but use for psi and kPa

11 / 30

What does a quick release valve do?

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

None of the above

It controls the air flow

It stops the flow of air going into the reservoirs

12 / 30

What is the purpose of a dual air brake system?

Works better with tandem wheels

They are in all new vehicles

No advantage whatsoever

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

13 / 30

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

Yes, but it will be much longer

Yes

Not unless the parking/emergency brake is also applied

14 / 30

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

Cable

Safety actuator

Air-over hydraulic

None of the above

15 / 30

Where is the relay valve typically installed?

Right beside the quick release valve

In front of the foot valve

Between the reservoir and the rear brake chambers

Beside the governor

16 / 30

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

Two

One

Three

Four

17 / 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

18 / 30

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

Caging

Pushing

Pulling

Sweeping

19 / 30

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

Discharge line

Supply line

Governor line

Delivery line

20 / 30

What do one-way check valves do?

They allow air to flow in both directions

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

They allow air to be exhausted through ports

None of the above

21 / 30

What is meant by compounding air brakes?

When the service brake is not working

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

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

When the park brake is not working

22 / 30

What happens when the driver releases the foot valve?

None of the above

Air pressure in the brake lines remains constant

Air pressure build back up

Air pressure in the brake chambers exhausts into the atmosphere

23 / 30

What are the problems using the air brakes for parking?

Not enough air to hold the vehicle

None of the above

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

The air will eventually leave the lines

24 / 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 mig-mag

A woggle

A wig-wag

A toggle

25 / 30

How often should you drain reservoirs?

Monthly

Weekly

Daily

Every 48 hours

26 / 30

What is another name for the foot brake pedal?

Treadle

Thread

Bar

Push rod

27 / 30

When should caging of park brake actually be done?

Only in an emergency

Once you've traveled 160 km during that trip

Prior to leaving on your daily trip

Every 500 km

28 / 30

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

The cable parking brake

The air parking brake

The hydraulic parking brake

The spring parking brake

29 / 30

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

Secondary tank first

Primary tank first

It doesn't matter as long as it works

Both sections are activated

30 / 30

What is the purpose of the relay valve?

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 push air through the lines

To help apply the brakes quicker

Your score is

BC Air Brake Practice Test 03

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