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

A brake drum is made of...

Cast aluminum

Nickel

Copper

Cast iron

2 / 30

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

100 and 110 psi

85 and 100 psi

120 and 145 psi

110 and 115 psi

3 / 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?

4 psi

2 psi

3 psi

1 psi

4 / 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?

Push rod travel is within limitations on all chambers

Glad hands are loose and flexible

No audible air leaks

Drums, bearings and tires are at normal operating temperature

5 / 30

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

Start engine and let air pressure build up

With wheels blocked, release park brakes

Check security and listen for squeaks coming from the compressor

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

6 / 30

What is referred to as air over hydraulic brakes?

None of these

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

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

7 / 30

Who is responsible to check the slack?

Driver

Employer

Carrier

Lead technician

8 / 30

What is referred to as the front axle ratio valve?

A valve which reduces application pressure to the front brakes

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

None of these

9 / 30

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

If the technician wants to comply

All of these

The willingness of the carrier to follow-through

The driver's mechanical experience

10 / 30

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

50 psi

80 psi

60 psi

40 psi

11 / 30

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

60 to 70 psi

35 to 50 psi

50 to 60 psi

85 to 100 psi

12 / 30

What is referred to as a pop-off valve?

A term sometimes used to describe the supply valve

A term sometimes used to describe the safety valve

A term sometimes used to describe the hand valve

A term sometimes used to describe the foot valve

13 / 30

After adjustment, check for brake contact by doing what?

Take it for a test drive

Pumping the brakes three or four times

All the above

Gently striking the brake drum with a metal hammer

14 / 30

What is referred to as a quick release valve?

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

None of these

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

A valve which exhausts air quickly to reduce release time

15 / 30

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

90 degrees

125 degrees

75 degrees

45 degrees

16 / 30

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

Repeat twice more

Inspect the foundation assembly for worn or broken components

Take it to a licensed technician

Attempt a third way

17 / 30

What does the application pressure gauge do?

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

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

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

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

18 / 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...

Four psi in one minute

One psi in one minute

Three psi in one minute

Two psi in one minute

19 / 30

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

1 3/4 inches

2 1/4 inches

2 inches

2 1/2 inches

20 / 30

What is referred to as a breakaway?

When the brakes move away from the wheels

When the brake pads move too far from the drums

When the trailer becomes disconnected from the tractor

None of these

21 / 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?

Listen for audible air leaks

There should be no air loss from the service line

Check gauge for any air loss after initial application

Watch the lines for an air loss

22 / 30

What is referred to as a draincock?

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

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

Rubber stoppers that stop the draining of the wet tank

The connector that attaches the hoses to the tanks

23 / 30

Describe the parking brake valve

A yellow square-shaped valve

A yellow diamond-shaped valve

A red diamond-shaped valve

An orange diamond-shaped valve

24 / 30

What is referred to as brake pots?

A term used to describe damaged brake drums

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

A term sometimes used to describe the brake chambers

A term used to describe brake pads

25 / 30

What is referred to as the firewall?

The metal casing around the fire extinguisher

The metal plate at the front of a trailer

The metal plate surrounding the brake chambers

The metal panel between the cab and the engine compartment

26 / 30

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

Remain stiff with little movement

Rotate freely without binding

None of these

Remain stationary

27 / 30

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

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

With trailer emergency brakes released and truck park brakes released

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

28 / 30

What is referred to as the fulcrum?

The point or support than a lever rests

The point where a lever pulls

The point or support on which a lever pivots

The point where a lever pushes

29 / 30

What do you need to check after the slack adjustment?

The drive sleeve

The brake cam

The cam roller

The push rod travel

30 / 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...

100 psi

110 psi

90 psi

80 psi

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Saskatchewan Air Brake Test 08

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