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 helps to keep the inside of the compressor working efficiently

It keeps the hoses clean

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

It dries the air as it reaches the brake chambers

2 / 30

What is the function of a quick-release valve?

To rapidly exhaust air from the controlled device

None of these

To quickly remove air from the compressor

To quickly drain the supply tank

3 / 30

What is the ratio valve designed for?

For tandem trailers

For use on dual-air system vehicles

For heavy load vehicles

All of these

4 / 30

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

Nothing

A one-way valve

A relay valve

A two-way valve

5 / 30

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

All of these

The push rod to move the slack adjuster

The return spring to move

The can shaft to secure

6 / 30

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

Dig-mag

Wig-wag

Big-wag

Mig-mag

7 / 30

What is attached to the face of the brake shoes?

Brake lining

A lubricant

Carbon

Teflon

8 / 30

The second reservoir is called...

The secondary reservoir

The service reservoir

The primary reservoir

The supply reservoir

9 / 30

What happens when reservoir air pressure drops?

The spring brakes activates to apply brake pressure

The warning system activates

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

The brake chambers force more pressure onto the brake system

10 / 30

What is another name for the supply reservoir?

The wet reservoir

The primary reservoir

None of these

The service reservoir

11 / 30

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

The air hoses are too big

The reservoirs are too large

A problem with the governor

Not enough reservoirs

12 / 30

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

110 psi

125 psi

150 psi

90 psi

13 / 30

Where is the ratio valve installed?

Next to the governor

Behind the compressor

In the front axle delivery line

In front of the supply tank

14 / 30

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

Remove half your load so your vehicle is lighter

Continue to drive but place your hazard light on

Drive at a slower speed

You must stop and determine the cause

15 / 30

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

It keeps the air flowing to the brake chambers

It stops over-filling of the reservoirs

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

It stops the air from over-filling the brake chambers

16 / 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

17 / 30

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

The supply reservoir

The premier reservoir

The main reservoir

The service reservoir

18 / 30

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

The service-brake chambers

The secondary reservoir

The primary reservoir

The wet tank

19 / 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 light

A low air warning bell

A low air warning wig-wag

20 / 30

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

Improper linings

Thin or distorted drums

Adjusted spring adjustors

Weak return springs

21 / 30

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

A foot valve

None of these

Automatically by the air system

A switch on the dash

22 / 30

Air is drawn from which reservoir to operate the brakes?

The supply reservoir

All of them

The wet reservoir

The service reservoir

23 / 30

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

Cut-out

Pushes

Cut-in

Presses

24 / 30

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

Low warning switch

Air pressure gauge

Rear-brake limiting valve

service reservoir

25 / 30

Do air dryers remove all moisture?

Most of the air hoses

Depending on the size of the dryer

Yes

26 / 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

27 / 30

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

Cut-in

Presses

Cut-out

Pushes

28 / 30

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

Because the steering action of the front axle would otherwise interfere

It improves fuel economy

All of these

It improves the suspension

29 / 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

30 / 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 a brake application is made

Manually when the driver applies pressure to stop the trailer

Any time the brakes have stopped the wheels from rotating

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Saskatchewan Air Brake Test 03

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