Saskatchewan Air Brake Test 03

If you’re interested in obtaining your Saskatchewan Air Brake endorsement, it’s essential to prepare for the official exam thoroughly. One of the best ways to do so is by taking the free practice test that Saskatchewan Government Insurance (SGI) offers. Not only will this test provide you with a comprehensive understanding of the kind of questions you’ll encounter on the actual exam, but it will also help you identify any areas you might need to work on further.

1 / 30

The stop light switch is an air-signaled electrical switch which is turned on...

Any time the brakes do not function properly

Any time the brakes have stopped the wheels from rotating

Any time a brake application is made

Manually when the driver applies pressure to stop the trailer

2 / 30

Air pushes against each service-brake diaphragm causing what to happen?

The return spring to move

The push rod to move the slack adjuster

The can shaft to secure

All of these

3 / 30

Which statement is false? The following will result in erratic, unpredictable and potentially dangerous brake performance.

Adjusted spring adjustors

Improper linings

Weak return springs

Thin or distorted drums

4 / 30

The supply reservoir is protected from being over-pressurized and bursting by what?

A one-way valve

A shut-off valve

A safety valve

A pressure valve

5 / 30

What determines the amount of heat that can be absorbed and dissipated to the atmosphere?

The size of the shoes

The number of brake chambers

The size of the brake chambers

Drum thickness

6 / 30

What should you do if the low air warning system activates?

Drive at a slower speed

Remove half your load so your vehicle is lighter

Continue to drive but place your hazard light on

You must stop and determine the cause

7 / 30

Where is the one-way check valve installed?

Under the foot valve

Next to the governor

In front of the compressor

Between the supply and service reservoirs

8 / 30

What is the purpose of the air dryer?

It dries the air as it reaches the brake chambers

It helps to keep the inside of the compressor working efficiently

It removes most liquid and water vapour from compressor discharge air before it reaches the air brake reservoirs

It keeps the hoses clean

9 / 30

What is another name for when the governor starts the compressor into its pumping stage?

Cut-out

Presses

Cut-in

Pushes

10 / 30

What is another name for the supply reservoir?

The primary reservoir

None of these

The service reservoir

The wet reservoir

11 / 30

What's the purpose of a one-way check valve?

It stops the air from over-filling the brake chambers

It keeps the air flowing to the brake chambers

To keep air from bleeding back from the supply to the service reservoir

It stops over-filling of the reservoirs

12 / 30

If a safety valve blows off excess pressure, what does this mean?

A problem with the governor

The air hoses are too big

Not enough reservoirs

The reservoirs are too large

13 / 30

This safety valve is pre-set, usually at what pressure?

150 psi

110 psi

90 psi

125 psi

14 / 30

Air is drawn from which reservoir to operate the brakes?

The service reservoir

The wet reservoir

The supply reservoir

All of them

15 / 30

Do air dryers remove all moisture?

Depending on the size of the dryer

Most of the air hoses

Yes

16 / 30

What is installed near the rear brake chambers to correct brake lag?

Nothing

A two-way valve

A one-way valve

A relay valve

17 / 30

What is A low-pressure warning device that drops into driver view called?

Dig-mag

Big-wag

Wig-wag

Mig-mag

18 / 30

The second reservoir is called...

The secondary reservoir

The service reservoir

The supply reservoir

The primary reservoir

19 / 30

What is the function of a quick-release valve?

None of these

To rapidly exhaust air from the controlled device

To quickly drain the supply tank

To quickly remove air from the compressor

20 / 30

Which statement is false? Several additions can be made to the basic system to improve it, including...

Low warning switch

Rear-brake limiting valve

Air pressure gauge

service reservoir

21 / 30

When the brakes are applied, air is delivered through the foot valve to...

The service-brake chambers

The secondary reservoir

The wet tank

The primary reservoir

22 / 30

Older trucks may be equipped with a front wheel limiting valve controlled by what?

A switch on the dash

None of these

Automatically by the air system

A foot valve

23 / 30

Which statement is false? To alert you when air pressure drops below a safe level, the following is installed...

A low air warning bell

A low air warning wig-wag

A low air warning light

A low air warning buzzer

24 / 30

What is another name for when the governor takes the compressor out of its pumping stage?

Pushes

Presses

Cut-in

Cut-out

25 / 30

What happens when reservoir air pressure drops?

The brake chambers force more pressure onto the brake system

The governor puts the compressor back into the pumping stage to keep adequate air pressure available for future brake applications

The warning system activates

The spring brakes activates to apply brake pressure

26 / 30

What is the ratio valve designed for?

For tandem trailers

For heavy load vehicles

For use on dual-air system vehicles

All of these

27 / 30

The first reservoir is closest to the compressor it is now called...

The premier reservoir

The main reservoir

The supply reservoir

The service reservoir

28 / 30

Why do front brake assemblies have the brake chamber and slack adjuster mounted on the backing plate?

It improves the suspension

Because the steering action of the front axle would otherwise interfere

It improves fuel economy

All of these

29 / 30

What is attached to the face of the brake shoes?

A lubricant

Carbon

Teflon

Brake lining

30 / 30

Where is the ratio valve installed?

In the front axle delivery line

In front of the supply tank

Behind the compressor

Next to the governor

Your score is

Saskatchewan Air Brake Test 03

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