British Columbia Truck Test-4 - Canada Driving License

1.Air brake systems are used on commercial vehicles instead of hydraulic systems because…?

They are much cheaper

They are much greener

They can apply much greater force

They need less maintenance

Correct! Wrong!

Its easy to get your driving license with DMV permit practice test

0/1

Progress

2.The supply reservoir is also known as…?

The dry tank

The wet tank

The cold tank

The hot tank

Correct! Wrong!

Its easy to get your driving license with DMV permit practice test

0/2

Progress

3.Many current air brake systems operate with a maximum pressure of what?

100 psi

150 psi

75 psi

125 psi

Correct! Wrong!

Its easy to get your driving license with DMV permit practice test

0/3

Progress

4.What do the one-way check valves on a dual air brake system control?

Airflow between the primary and secondary reservoirs

Airflow to the secondary reservoir

Airflow to the primary reservoir

Airflow to the primary and secondary reservoirs

Correct! Wrong!

Its easy to get your driving license with DMV permit practice test

0/4

Progress

5.Air brake systems are less likely to completely fail than hydraulic systems because…?

All of the above

They are less complicated

They can cope with small leaks

They are under less pressure

Correct! Wrong!

Its easy to get your driving license with DMV permit practice test

0/5

Progress

6.If your compressor is belt driven, when you press down on the belt midway between the pulleys, you should not be able to push it in more than…?

Four times the width of the belt

Twice the width of the belt

The width of the belt

Three times the width of the belt

Correct! Wrong!

Its easy to get your driving license with DMV permit practice test

0/6

Progress

7.A normal stop on level ground in good conditions will usually involve an air pressure of less than…?

20 psi

10 psi

30 psi

40 psi

Correct! Wrong!

Its easy to get your driving license with DMV permit practice test

0/7

Progress

8.Which of these controls the compressor in an air brake system?

The reservoir

The foot valve

The brakes

The governor

Correct! Wrong!

Its easy to get your driving license with DMV permit practice test

0/8

Progress

9.In a typical Type 30 chamber, an air pressure of 100 psi will deliver a force on the pushrod of what?

2500 lbs

2000 lbs

3000 lbs

3500 lbs

Correct! Wrong!

Its easy to get your driving license with DMV permit practice test

0/9

Progress

10.If a compressor is working at 120 psi, what will the air temperature as it leaves the compressor be?

304°C plus

254°C plus

204°C plus

154°C plus

Correct! Wrong!

Its easy to get your driving license with DMV permit practice test

0/10

Progress

11.In dual air brake systems using blended air, the parking brake will take air from…?

Each tank alternately

The tank with the lowest pressure

Directly from the compressor

The tank with the highest pressure

Correct! Wrong!

Its easy to get your driving license with DMV permit practice test

0/11

Progress

12.Compounding brakes means what?

Parking brakes and service brakes applying together

Parking brakes and service brakes applying alternately

Any of these

Secondary and primary systems applying together

Correct! Wrong!

Its easy to get your driving license with DMV permit practice test

0/12

Progress

13.Using foundation brakes to hold the vehicle when parked is…?

Illegal

Dangerous

Unreliable

All of these

Correct! Wrong!

Its easy to get your driving license with DMV permit practice test

0/13

Progress

14.An alternative name for the supply line is what?

Service line

Primary line

Secondary line

Emergency line

Correct! Wrong!

Its easy to get your driving license with DMV permit practice test

0/14

Progress

15.The trailer air supply valve must close if the tractor pressure drops below…?

15 psi

10 psi

20 psi

25 psi

Correct! Wrong!

Its easy to get your driving license with DMV permit practice test

0/15

Progress

16.Safety actuator parking brakes will not release if more than how much air has been lost from the parking reservoir?

6 psi

4 psi

10 psi

8 psi

Correct! Wrong!

Its easy to get your driving license with DMV permit practice test

0/16

Progress

17.When trailer brakes "dynamite" they will remain applied for how long?

10 minutes

5 minutes

15 minutes

20 minutes

Correct! Wrong!

Its easy to get your driving license with DMV permit practice test

0/17

Progress

18.On a dual airbrake system, if the primary system fails which of these applies?

Stopping distance will remain the same

Stopping distance will decrease

Stopping will become impossible

Stopping distance will increase

Correct! Wrong!

Its easy to get your driving license with DMV permit practice test

0/18

Progress

19.Which of these is an alternative name for the control line?

Service line

Primary line

Emergency line

Supply line

Correct! Wrong!

Its easy to get your driving license with DMV permit practice test

0/19

Progress

20.Spring parking brakes will come on when applied by the driver and…?

If air pressure rises

If air pressure drops

If the vehicle starts to skid

When going downhill

Correct! Wrong!

Its easy to get your driving license with DMV permit practice test

0/20

Progress

21.The parking brake control valve on the dashboard is usually which colour?

Blue

Yellow

Green

Red

Correct! Wrong!

Its easy to get your driving license with DMV permit practice test

0/21

Progress

22.Spring parking brakes will fully apply if air pressure drops to what level?

20 – 45 psi

10 – 20 psi

45 – 60 psi

5 – 10 psi

Correct! Wrong!

Its easy to get your driving license with DMV permit practice test

0/22

Progress

23.Releasing a spring parking brake manually is known as what?

Boxing

Unlocking

Forcing

Caging

Correct! Wrong!

Its easy to get your driving license with DMV permit practice test

0/23

Progress

24.The chief difference between a trailer air brake system compared to the tractor is that the trailer will not have…?

Foundation brakes

A compressor

Air reservoirs

Control valves

Correct! Wrong!

Its easy to get your driving license with DMV permit practice test

0/24

Progress

25.Which of these balances pressure between the service brakes and the spring parking brakes?

Spring brake modulator

Service brake modulator

Service brake balancer

Spring balancer

Correct! Wrong!

Its easy to get your driving license with DMV permit practice test

0/25

Progress

26.How are safety actuator parking brakes different from normal brake systems?

The brake chamber operates hydraulically

The parking brakes operate automatically

The brake chamber has two springs

The brake chamber has two diaphragms

Correct! Wrong!

Its easy to get your driving license with DMV permit practice test

0/26

Progress

27.Which of these is a sign that you may have reversed the supply line and service line connections?

All of these

The foot valve feels spongy

The trailer service brakes are locked

The spring parking brakes won’t release

Correct! Wrong!

Its easy to get your driving license with DMV permit practice test

0/27

Progress

28.What force does the coil spring in spring parking brake chambers exert?

1500 – 2000 lbs

1000 – 1500 lbs

2500 – 3000 lbs

2000 – 2500 lbs

Correct! Wrong!

Its easy to get your driving license with DMV permit practice test

0/28

Progress

29.If your system is colour-coded, the supply line will be what colour?

Black

Red

Blue

White

Correct! Wrong!

Its easy to get your driving license with DMV permit practice test

0/29

Progress

30.In colour-coded systems, which colour is used to indicate the control line?

Red

Blue

Green

Yellow

Correct! Wrong!

Its easy to get your driving license with DMV permit practice test

0/30

Progress

31.When not in use, glad hand couplers should be blocked with dead-end couplers or if these are not available they should be…?

Secured upright

Blocked with rags

Left venting air

Connected to each other

Correct! Wrong!

Its easy to get your driving license with DMV permit practice test

0/31

Progress

32.The couplers between tractor and trailer are known as what?

No hands

Third hands

Extra hands

Glad hands

Correct! Wrong!

Its easy to get your driving license with DMV permit practice test

0/32

Progress

33.Before manually releasing spring brakes, you should do what?

Turn on the engine

Chock the wheels

Pressurise the air system

Attach the vehicle to a tow truck

Correct! Wrong!

Its easy to get your driving license with DMV permit practice test

0/33

Progress

34.Spring parking brakes are kept off by…?

Spring pressure

Air pressure

Any of these

Drive force

Correct! Wrong!

Its easy to get your driving license with DMV permit practice test

0/34

Progress

35.Spring parking brakes are mounted where on a tractor?

On the rear and steering axles

On the steering axles

Any of these

On the rear axles

Correct! Wrong!

Its easy to get your driving license with DMV permit practice test

0/35

Progress

36.When using a bobtail proportioning system braking will require…?

Normal pedal pressure

Lower than usual pedal pressure

Higher than usual pedal pressure

Any of these depending on road conditions

Correct! Wrong!

Its easy to get your driving license with DMV permit practice test

0/36

Progress

37.When the trailer air supply valve is closed, the trailer brakes must…?

Release fully

Apply 50%

Release 75%

Apply fully

Correct! Wrong!

Its easy to get your driving license with DMV permit practice test

0/37

Progress

38.Under what circumstances can you use the hand valve for parking?

If parking temporarily

On level ground

None of them

If off street

Correct! Wrong!

Its easy to get your driving license with DMV permit practice test

0/38

Progress

39.Drum brake linings must be a minimum of what thickness?

1/8 inch

1/16 inch

1/2 inch

1/4 inch

Correct! Wrong!

Its easy to get your driving license with DMV permit practice test

0/39

Progress

40.By law, you must check the manual and automatic slack adjusters…?

Every day

Every 1000 miles

Every two days

Once a week

Correct! Wrong!

Its easy to get your driving license with DMV permit practice test

0/40

Progress

41.Brakes need adjustment if the applied stroke is more than…?

1 1/4 inches

2 1/2 inches

1 3/4 inches

2 3/4 inches

Correct! Wrong!

Its easy to get your driving license with DMV permit practice test

0/41

Progress

42.When checking adjustment, you should wear…?

Eye protection

Stout clothing

A hard hat

All of these

Correct! Wrong!

Its easy to get your driving license with DMV permit practice test

0/42

Progress

43.The vast majority of brake failures are caused by what?

Poor driving

Road debris

Poor maintenance/checking

Mechanical defects

Correct! Wrong!

Its easy to get your driving license with DMV permit practice test

0/43

Progress

44.Operating a vehicle with an excessive brake chamber pushrod stroke can result in a fine of up to…?

$1500

$2500

$1000

$2000

Correct! Wrong!

Its easy to get your driving license with DMV permit practice test

0/44

Progress

45.Alcohol injector systems are designed to prevent…?

Freezing

Rusting

Excessive moisture

All of these

Correct! Wrong!