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

What is the purpose of the air dryer?

It keeps the hoses clean

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

2 / 30

What is attached to the face of the brake shoes?

Carbon

A lubricant

Teflon

Brake lining

3 / 30

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

Continue to drive but place your hazard light on

Remove half your load so your vehicle is lighter

Drive at a slower speed

You must stop and determine the cause

4 / 30

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

The size of the brake chambers

The size of the shoes

The number of brake chambers

Drum thickness

5 / 30

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

The push rod to move the slack adjuster

The return spring to move

The can shaft to secure

All of these

6 / 30

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

150 psi

110 psi

125 psi

90 psi

7 / 30

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

The secondary reservoir

The wet tank

The primary reservoir

The service-brake chambers

8 / 30

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

Rear-brake limiting valve

Low warning switch

service reservoir

Air pressure gauge

9 / 30

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

A relay valve

A one-way valve

A two-way valve

Nothing

10 / 30

What is another name for the supply reservoir?

The service reservoir

None of these

The primary reservoir

The wet reservoir

11 / 30

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

Weak return springs

Improper linings

Adjusted spring adjustors

Thin or distorted drums

12 / 30

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

The premier reservoir

The service reservoir

The main reservoir

The supply reservoir

13 / 30

Where is the one-way check valve installed?

In front of the compressor

Between the supply and service reservoirs

Under the foot valve

Next to the governor

14 / 30

Do air dryers remove all moisture?

Depending on the size of the dryer

Most of the air hoses

Yes

15 / 30

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

Any time a brake application is made

Any time the brakes have stopped the wheels from rotating

Manually when the driver applies pressure to stop the trailer

Any time the brakes do not function properly

16 / 30

What is the function of a quick-release valve?

None of these

To quickly drain the supply tank

To quickly remove air from the compressor

To rapidly exhaust air from the controlled device

17 / 30

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

Cut-in

Cut-out

Presses

Pushes

18 / 30

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

It improves fuel economy

It improves the suspension

All of these

Because the steering action of the front axle would otherwise interfere

19 / 30

The second reservoir is called...

The secondary reservoir

The service reservoir

The primary reservoir

The supply reservoir

20 / 30

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

Mig-mag

Big-wag

Dig-mag

Wig-wag

21 / 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

22 / 30

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

A foot valve

Automatically by the air system

None of these

A switch on the dash

23 / 30

Air is drawn from which reservoir to operate the brakes?

The wet reservoir

All of them

The service reservoir

The supply reservoir

24 / 30

Where is the ratio valve installed?

Behind the compressor

In front of the supply tank

Next to the governor

In the front axle delivery line

25 / 30

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

Presses

Cut-in

Cut-out

Pushes

26 / 30

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

A low air warning buzzer

A low air warning bell

A low air warning light

A low air warning wig-wag

27 / 30

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

The reservoirs are too large

The air hoses are too big

Not enough reservoirs

A problem with the governor

28 / 30

What happens when reservoir air pressure drops?

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

The spring brakes activates to apply brake pressure

The warning system activates

The brake chambers force more pressure onto the brake system

29 / 30

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

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

It keeps the air flowing to the brake chambers

It stops the air from over-filling the brake chambers

It stops over-filling of the reservoirs

30 / 30

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

A pressure valve

A shut-off valve

A one-way valve

A safety valve

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Saskatchewan Air Brake Test 03

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