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 function of a quick-release valve?

To quickly drain the supply tank

To rapidly exhaust air from the controlled device

To quickly remove air from the compressor

None of these

2 / 30

Where is the one-way check valve installed?

In front of the compressor

Under the foot valve

Between the supply and service reservoirs

Next to the governor

3 / 30

What is attached to the face of the brake shoes?

Teflon

A lubricant

Carbon

Brake lining

4 / 30

What is the purpose of the air dryer?

It dries the air as it reaches the brake chambers

It keeps the hoses clean

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

5 / 30

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

It stops the air from over-filling the brake chambers

It stops over-filling of the reservoirs

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

It keeps the air flowing to the brake chambers

6 / 30

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

Continue to drive but place your hazard light on

Drive at a slower speed

You must stop and determine the cause

Remove half your load so your vehicle is lighter

7 / 30

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

The air hoses are too big

A problem with the governor

The reservoirs are too large

Not enough reservoirs

8 / 30

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

The number of brake chambers

The size of the brake chambers

The size of the shoes

Drum thickness

9 / 30

What is the ratio valve designed for?

For use on dual-air system vehicles

For tandem trailers

All of these

For heavy load vehicles

10 / 30

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

A shut-off valve

A one-way valve

A safety valve

A pressure valve

11 / 30

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

150 psi

125 psi

110 psi

90 psi

12 / 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

13 / 30

What is another name for the supply reservoir?

None of these

The service reservoir

The wet reservoir

The primary reservoir

14 / 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

15 / 30

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

Wig-wag

Dig-mag

Mig-mag

Big-wag

16 / 30

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

The service-brake chambers

The wet tank

The secondary reservoir

The primary reservoir

17 / 30

What happens when reservoir air pressure drops?

The warning system activates

The spring brakes activates to apply brake pressure

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

18 / 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

19 / 30

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

Cut-out

Presses

Pushes

Cut-in

20 / 30

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

Cut-in

Pushes

Presses

Cut-out

21 / 30

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

Thin or distorted drums

Weak return springs

Adjusted spring adjustors

Improper linings

22 / 30

Air is drawn from which reservoir to operate the brakes?

The supply reservoir

The wet reservoir

All of them

The service reservoir

23 / 30

Do air dryers remove all moisture?

Yes

Depending on the size of the dryer

Most of the air hoses

24 / 30

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

A two-way valve

A relay valve

A one-way valve

Nothing

25 / 30

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

The service reservoir

The supply reservoir

The main reservoir

The premier reservoir

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 bell

A low air warning buzzer

A low air warning light

A low air warning wig-wag

27 / 30

The second reservoir is called...

The secondary reservoir

The primary reservoir

The supply reservoir

The service reservoir

28 / 30

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

The can shaft to secure

The return spring to move

All of these

The push rod to move the slack adjuster

29 / 30

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

It improves the suspension

It improves fuel economy

All of these

Because the steering action of the front axle would otherwise interfere

30 / 30

Where is the ratio valve installed?

Next to the governor

Behind the compressor

In front of the supply tank

In the front axle delivery line

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Saskatchewan Air Brake Test 03

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