Saskatchewan Air Brake Test 08

If you pass the practice test with flying colors, you can feel confident in your preparation for the official exam. Passing the official test is crucial to obtain an air brake endorsement on your commercial driver’s license. With the proper preparation, you can earn an endorsement that demonstrates your knowledge and responsibility for safety and regulates your credibility and can improve your employability.

1 / 30

The amount of force available at the push rod is consistent out to how much of stroke?

2 1/4 inches

2 1/2 inches

2 inches

1 3/4 inches

2 / 30

What is referred to as a breakaway?

When the trailer becomes disconnected from the tractor

None of these

When the brake pads move too far from the drums

When the brakes move away from the wheels

3 / 30

After completing a slack adjustment, apply the brakes and check that the slack adjusters...

Rotate freely without binding

Remain stiff with little movement

Remain stationary

None of these

4 / 30

With brakes released, check that the angle formed by the slack adjuster arm and push rod is greater than...

125 degrees

45 degrees

75 degrees

90 degrees

5 / 30

When performing a pre-trip inspection for air single unit, which of the following is not a required step?

Check security and listen for squeaks coming from the compressor

With wheels blocked, release park brakes

Start engine and let air pressure build up

Check brake adjustments (push rod travel) manually. Adjust if necessary

6 / 30

What is referred to as the fulcrum?

The point where a lever pushes

The point or support on which a lever pivots

The point or support than a lever rests

The point where a lever pulls

7 / 30

What is referred to as brake pots?

A term sometimes used to describe the brake chambers

A term used to describe brake pads

A term used to describe the dimples lets in the brake pads after application

A term used to describe damaged brake drums

8 / 30

What is referred to as air over hydraulic brakes?

None of these

A braking system where the brakes are applied hydraulically but application is made by air pressure

A braking system that has twin systems to increase braking ability

A braking system where the brakes are applied through air pressure with hydraulic being a back-up

9 / 30

If the brakes can't be adjusted, what should happen?

Repeat twice more

Inspect the foundation assembly for worn or broken components

Attempt a third way

Take it to a licensed technician

10 / 30

What is referred to as a draincock?

The lever that is attached to the foot valve to initiate pressure

Drain valves mounted on each reservoir so they can be drained of moisture and other contaminants

The connector that attaches the hoses to the tanks

Rubber stoppers that stop the draining of the wet tank

11 / 30

What is referred to as the front axle ratio valve?

A valve which reduces application pressure to the front brakes

None of these

A valve which increases application pressure to the front brakes

A valve which splits up the application pressure to the front brakes into two parts

12 / 30

When performing a pre-trip inspection for air single unit, make and hold full foot-brake application for a maximum air loss after initial application must not exceed how many psi in one minute?

3 psi

4 psi

2 psi

1 psi

13 / 30

What does the application pressure gauge do?

It tells the driver how much pressure is in the supply reservoir

It tells the driver the amount of air pressure being delivered when brakes are applied

It tells the driver how much pressure is in the primary reservoir

It tells the driver the amount of air pressure being exhausted at any given time

14 / 30

Describe the parking brake valve

An orange diamond-shaped valve

A yellow diamond-shaped valve

A red diamond-shaped valve

A yellow square-shaped valve

15 / 30

Who is responsible to check the slack?

Carrier

Driver

Employer

Lead technician

16 / 30

Pre-trip procedure for air combination unit, make and hold a foot brake application. Which of the following is not a required step to check?

There should be no air loss from the service line

Listen for audible air leaks

Check gauge for any air loss after initial application

Watch the lines for an air loss

17 / 30

What is referred to as the firewall?

The metal casing around the fire extinguisher

The metal plate surrounding the brake chambers

The metal panel between the cab and the engine compartment

The metal plate at the front of a trailer

18 / 30

What is referred to as a pop-off valve?

A term sometimes used to describe the safety valve

A term sometimes used to describe the supply valve

A term sometimes used to describe the foot valve

A term sometimes used to describe the hand valve

19 / 30

After adjustment, check for brake contact by doing what?

Take it for a test drive

Pumping the brakes three or four times

Gently striking the brake drum with a metal hammer

All the above

20 / 30

The extent of the driver's responsibility to make repairs will depend on factors such as the maintenance policy of the company and...

The driver's mechanical experience

If the technician wants to comply

The willingness of the carrier to follow-through

All of these

21 / 30

What do you need to check after the slack adjustment?

The push rod travel

The drive sleeve

The brake cam

The cam roller

22 / 30

Which of the following is not a step while performing a pre-trip procedure for air combination unit?

With trailer emergency brakes released and truck park brakes released

Charge trailer, apply park brakes on the truck only and try to gently pull ahead

Try to gently pull ahead to test emergency application of trailer brakes

Release park brakes, move slowly ahead and apply trailer brakes with hand valve, if equipped

23 / 30

After you reconnect lines, charge trailer and rebuild pressure, make and hold full foot-brake application, the maximum air loss after initial application is...

One psi in one minute

Two psi in one minute

Four psi in one minute

Three psi in one minute

24 / 30

When you stop the vehicle in the pull-out area and inspect the vehicle's braking system before proceeding down a steep hill, which of the following is not checked?

Drums, bearings and tires are at normal operating temperature

Push rod travel is within limitations on all chambers

Glad hands are loose and flexible

No audible air leaks

25 / 30

Pre-trip procedure for air combination unit, for the governor operation, the cut-in pressure; fan brakes until compressor cuts in, usually about 20-25 psi less than cut-out pressure, but at a minimum of...

80 psi

100 psi

90 psi

110 psi

26 / 30

Pre-trip procedure for air combination unit, for the governor operation, the cut-out pressure should be between...

110 and 115 psi

100 and 110 psi

120 and 145 psi

85 and 100 psi

27 / 30

What is referred to as a quick release valve?

None of these

A valve which exhausts air quickly to reduce release time

A valve which adds air quickly to the supply line to reduce release time

A valve which adds air quickly to the service line to reduce release time

28 / 30

Run the engine between 600 and 800 rpm and observe the time needed for air pressure to rise from...

50 to 60 psi

60 to 70 psi

85 to 100 psi

35 to 50 psi

29 / 30

A brake drum is made of...

Copper

Cast aluminum

Cast iron

Nickel

30 / 30

With ignition key on, fan brakes to lower air pressure, the low warning system should operate at minimum of...

80 psi

40 psi

50 psi

60 psi

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Saskatchewan Air Brake Test 08

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