NEW BRUNSWICK AIR BRAKE TEST 02

Air brakes play a significant role in the road safety of New Brunswick, Canada. In fact, they are a mandatory safety feature for any commercial truck and trailer combination in the province.

Air Brake Test 02

1 / 30

Which of the following is a disadvantage of a control (service) line and foot and hand valve system?

The application and release of the trailer brakes is slower than those of the tractor.

All of these

If the trailer broke away from the tractor, the trailer would not have brakes.

If the air pressure in the reservoirs were lost, there would be no way to apply the brakes of the tractor or the trailer.

2 / 30

What are the two types of trailer supply valves? Choose the best answer.

Toggle-type switch and manual

Automatic and manual

Automatic and spring loaded

Push/pull type and automatic

3 / 30

Which of the following is responsible for preventing automatic spring brake application if the trailer supply line has a gradual leak?

Trailer spring parking brake valve

Rear service reservoir

Relay valve

Spring parking brake chambers

4 / 30

Which of the following is capable of directing air flow into a common line from either of the foot valve or the hand valve?

Reservoir safety valve

Two-way check valve

Tractor protection valve

One-way check valve

5 / 30

Which of the following can a tractor with a dual air brake and spring parking brakes system tow?

A tractor with a basic air brake system and spring parking brakes

A tractor with a dual air brake system and without spring parking brakes

Tractors and trailers are interchangeable regardless of air brake system or spring parking brake installation

A tractor with a basic air brake system and without spring parking brakes

6 / 30

When connecting the glad hands, start with the two gaskets together and the couplers at a ___ angle to each other.

90°

180°

45°

120°

7 / 30

$What would happen if a trailer that is not equipped with spring parking brakes were to separate from the tractor?

Pressure will build up in the trailer reservoir to the same pressure as the reservoirs on the tractor.

The trailer brakes will automatically be placed into emergency application

No action will take place until a brake application is made

No action will take place until the trailer supply valve is shifted to the emergency position manually to seal off the tractor

8 / 30

Tractors and trailers _______ ABS can be connected to one another without affecting the operation of the ABS.

Without

With

Only with the same type of

With or without

9 / 30

On vehicles equipped with ______ brakes it is possible to pump the brake pedal to compensate for brakes that are out of adjustment. This is not possible with a vehicle equipped with ___________ brakes.

Air, disc

Hydraulic, air

Disc, hydraulic

Air, hydraulic

10 / 30

On the pre-trip air brake inspection, you must ensure that the parking brake spring is not _______ or it will not expand and apply the brake.

Manually caged

Released

Exhausted

Overheated

11 / 30

An ABS system keeps the wheel from skidding and increases vehicle stability and control during what type of conditions?

Through curves

Emergency stops

Wet roads

All of these

12 / 30

Which of the following is a term that refers to the coupling device used to connect the control (service) and supply (emergency) lines of the trailer to the tractor?

Tractor protection valve

Two-way check valve

Application line

Glad hands

13 / 30

___________ must not be used to hold a parked vehicle that is left unattended. Loss of pressure will result in loss of brakes. Always set the __________.

Parking breaks, trailer breaks

Trailer brakes, emergency brakes

Emergency brakes, trailer breaks

Trailer brakes, parking brakes

14 / 30

With automatic traction control, __________ is activated when the system detects a wheel slipping because the wheels operating on different surfaces such as one wheel on dry pavement and the other on ice.

Differential braking

Electronic engine control

Anti-lock brake systsem

Dual air brake system

15 / 30

A tractor protection valve is normally located near the _________.

Rear of the tractor cab

Control (service line)

Front of the tractor cab

Tractor protection valve

16 / 30

If a relay emergency valve is mounted on the trailer reservoir and a loss of air pressure from the power unit service system occurs, what will automatically happen?

A quick release of the trailer brakes

Emergency application of the brakes

Stops air pressure in the reservoir from going back to the source of the supply

It has no automatic function

17 / 30

Which of the following negatively affects braking ability?

Malfunctioning valves

Oversized drums

All of these

Contaminated brake linings

18 / 30

When a brake diaphragm chamber bottoms out, the force reduces to ____.

19 / 30

___________ prevents total loss of air from the tractor if the trailer breaks away, or if the connecting air lines between tractor and trailer become separated or ruptured.

A two-way check valve

A reservoir safety valve

A tractor protection system

Emergency brakes

20 / 30

Which of the following is true in the case that there is air loss in one of the dual air brake system's circuits?

Trailer will continue having braking ability

Trailer will lose all braking ability

The pressure in the trailer reservoirs and lines will drain off

Spring breaks will be applied automatically

21 / 30

If the air pressure drops to a range between ______ psi, the trailer supply valve will close automatically by spring pressure, opening the exhaust port.

70 and 50

45 and 20

60 and 40

50 and 30

22 / 30

Which of the following negatively affect braking ability?

Brand new linings

If the angle between the slack adjuster arm and the push rod are at 90°

If the diaphragm brake chambers drops off significantly if the stroke is just below 75% of its designed travel.

Excessive moisture in reservoirs

23 / 30

A/n _______ is an electronic system that monitors wheel speed at all times and controls wheel speed while braking.

An anti-lock brake system

Electronic engine control

Automatic traction control

Modulator valve

24 / 30

What system reduces the potential of powering into a jackknife caused by wheel overspin during acceleration?

Automatic traction control

Electronic engine control

An anti-lock brake system

Dual air brake system

25 / 30

The effectiveness of diaphragm brake chambers drops off significantly if the stroke exceeds __% of its designed travel.

26 / 30

If the foot valve is supplying a higher application pressure than the hand valve, a two-way check valve will allow air flow from which source?

Hand valve

Foot valve

Neither

Both equally

27 / 30

In regards to a dual air brake system, air taken from primary and secondary circuits through a two-way check valve is known as _________.

Tertiary air

Dual air

Blended air

Coalesced air

28 / 30

Which of the following is another term for a control (service) line?

Tractor protection valve

Glad hands

Application line

Supply line

29 / 30

Which of the following is true of a basic dual air brake system?

More reservoir capacity

All of these

Safer than a basic air brake system

Two brake systems in one

30 / 30

Caging a spring parking brake is the same as...

Applying them

Servicing them

Mechanically releasing them

Placing them inside metal bars

Your score is

Air brakes use compressed air as the power source to stop large vehicles effectively. The New Brunswick Air Brake Test is a comprehensive evaluation of a driver’s knowledge of air brake systems. It is designed to ensure that truck drivers are adequately trained to operate their vehicles safely. The test covers topics such as system components, air pressures, brake adjustment, and emergency procedures. The province is committed to ensuring that drivers are knowledgeable and competent regarding air brake systems for the safety of all road users. Regular air brake inspections and servicing also go a long way in preventing accidents and ensuring that commercial vehicles operate optimally on New Brunswick roads.

Before learning to drive a Class 1, Class 2, Class 3, or Class 4 vehicle, you must get authorized instruction in the class of vehicle you want to be licensed in. For each section of these practice tests, we have multiple practice tests. Requirements for Air Brake Endorsement are 1) Must complete an Air Brake Written Test and 2) Must complete an Air Brake Practical Test.

To successfully prepare, consider utilizing these exams and the official New Brunswick Air Brake Manual to your advantage. The more knowledge you can attain, the better it will be for you once you return to the SNB office to take the air brake license written knowledge test.