NB Drivers Permit Practice Test | NB Road Rules Practice Test

Truck Test 4

1.When removing fittings or hoses from an air brake system, you should make sure that the air pressure is…?

Steady

Moderate

High

Drained

Correct! Wrong!

Progress
01/40

Truck Test 4

2.If a driver has permission to operate vehicles with air brakes, what endorsement will appear on their license?

Correct! Wrong!

Progress
02/40

Truck Test 4

3.A typical cylinder in an air brake system can generate a force of…?

1000 pounds

2000 pounds

3000 pounds

5000 pounds

Correct! Wrong!

Progress
03/40

Truck Test 4

4.To qualify for an air brake endorsement in Alberta, a driver must have had a minimum of how many hours of instruction (not including breaks)?

2.5

3.5

6.5

4.5

Correct! Wrong!

Progress
04/40

Truck Test 4

5.When descending a long hill, you should apply the brakes…?

With a pumping motion

Periodically

Continuously

As little as possible

Correct! Wrong!

Progress
05/40

Truck Test 4

6.Brake components are constructed to withstand up to what temperature under hard braking?

150° C

250° C

200° C

300° C

Correct! Wrong!

Progress
06/40

Truck Test 4

7.If you are driving a truck and trailer combination of 20 m in length, you should allow how much following distance?

2 seconds

4 seconds

5 seconds

7 seconds

Correct! Wrong!

Progress
07/40

Truck Test 4

8.When a driver sees a problem, how long will they usually be between identifying the hazard and applying the brake?

0.25 of a second

0.75 of a second

1.5 seconds

2.5 seconds

Correct! Wrong!

Progress
08/40

Truck Test 4

9.At what pressure in psi should the park control valve pop out?

15 – 20

20 – 45

30 – 55

55 – 75

Correct! Wrong!

Progress
09/40

Truck Test 4

10.When braking what should you do to prevent your vehicle jerking back?

Ease off the brake pedal

Increase pressure on the brake pedal

Maintain an even brake pressure

Floor the brake pedal

Correct! Wrong!

Progress
010/40

Truck Test 4

11.The first action in any air brake inspection should be what?

Connect both air lines

Turn on the ignition

Chock the wheels

Push the park control valve

Correct! Wrong!

Progress
011/40

Truck Test 4

12.If your air brake system is colour-coded, the secondary circuit components will be what colour?

Green

Yellow

Red

Blue

Correct! Wrong!

Progress
012/40

Truck Test 4

13.How many different circuits are there in an air brake system?

Correct! Wrong!

Progress
013/40

Truck Test 4

14.What is the most common fault found with air brake systems during commercial vehicle inspections?

Worn out brake pads

Faulty compressors

Leaking air lines

Brakes out of adjustment

Correct! Wrong!

Progress
014/40

Truck Test 4

15.When testing the supply circuit, the compressor should be able to build from 50 to 90 psi within what time?

3 minutes

2 minutes

1 minute

5 minutes

Correct! Wrong!

Progress
015/40

Truck Test 4

16.Brake fade occurs because the brakes are…?

Too cold

Too dry

Too wet

Too hot

Correct! Wrong!

Progress
016/40

Truck Test 4

17.A braking system works by converting the energy of motion into what?

Liquid

Gas

Friction

Heat

Correct! Wrong!

Progress
017/40

Truck Test 4

18.A vehicle travelling at 40 km/h will need how much more stopping power than a vehicle travelling at 20 km/h?

Correct! Wrong!

Progress
018/40

Truck Test 4

19.Which of these has the ultimate responsibility to ensure their vehicle has safe, properly adjusted brakes before taking a vehicle out on the road?

The mechanic

The driver

The state inspectors

The owner

Correct! Wrong!

Progress
019/40

Truck Test 4

20.The lag time between an air brake being applied and the brake beginning to function is approximately…?

0.4 of a second

0.7 of a second

0.1 of a second

0.2 of a second

Correct! Wrong!

Progress
020/40

Truck Test 4

21.To perform an air brake inspection, the vehicle should be…?

Facing slightly downhill

Facing slightly uphill

On level ground

Any of the above

Correct! Wrong!

Progress
021/40

Truck Test 4

22.One advantage that air brake systems have over hydraulic brake systems is that they are better able to tolerate what?

Small leaks

Abuse

Wet roads

Icy conditions

Correct! Wrong!

Progress
022/40

Truck Test 4

23.A tractor-trailer combination has accelerated to 100 km/h but now needs to make an emergency stop within seven seconds. The stopping force required will be approximately how many times more than the acceleration force?

Correct! Wrong!

Progress
023/40

Truck Test 4

24.The governor should supply more air to the tanks when the system pressure drops by approximately how much?

25 psi

45 psi

15 psi

35 psi

Correct! Wrong!

Progress
024/40

Truck Test 4

25.The supply circuit in an air brake system does what?

Stores the air

Supplies the air

Compresses the air

All of these things

Correct! Wrong!

Progress
025/40

Truck Test 4

26.Which of these is not part of a simplified service brake circuit?

Brake pedal

Service tank

Service relay valve

Control valve

Correct! Wrong!

Progress
026/40

Truck Test 4

27.A normal stop usually requires air pressure to the brakes at less than…?

50 psi

20 psi

60 psi

40 psi

Correct! Wrong!

Progress
027/40

Truck Test 4

28.Steering axles most typically have what effective diaphragm area in their brake chambers?

30 in.²

20 in.²

15 in.²

25 in.²

Correct! Wrong!

Progress
028/40

Truck Test 4

29.The supply tank is also known as what?

The dry tank

The wet tank

The hot tank

The cold tank

Correct! Wrong!

Progress
029/40

Truck Test 4

30.When the low-pressure warning device is activated, what should the driver do?

Stop immediately

Proceed with caution

Report it at the end of the trip

Use the brakes more sparingly

Correct! Wrong!

Progress
030/40

Truck Test 4

31.The safety valve on the supply tank will vent if pressure rises above…?

250 psi

100 psi

150 psi

200 psi

Correct! Wrong!

Progress
031/40

Truck Test 4

32.When using antifreeze in an air brake system, you should always use a solution that contains what?

Water

Acid

Rustproofer

Lubricant

Correct! Wrong!

Progress
032/40

Truck Test 4

33.Which of these is the primary reason to have a dual air brake system?

Less chance of total brake failure

Greater stopping power

Less maintenance required

Less energy needed

Correct! Wrong!

Progress
033/40

Truck Test 4

34.Contamination in the system must be prevented from accumulating by draining the tanks how often?

Every week

Every three days

Every day

Every two hours

Correct! Wrong!

Progress
034/40

Truck Test 4

35.The governor is set to cut out when air pressure reaches a maximum of…?

95 psi

115 psi

135 psi

145 psi

Correct! Wrong!

Progress
035/40

Truck Test 4

36.The double foot valve when applied operates…?

The primary circuit

Both circuits simultaneously

The secondary circuit

Any of these depending on circumstances

Correct! Wrong!

Progress
036/40

Truck Test 4

37.The primary purpose of the supply tank is to do what?

Increase the air pressure

Cool the air

Heat the air

Remove contaminants

Correct! Wrong!

Progress
037/40

Truck Test 4

38.What is the purpose of a check valve?

To prevent air flowing from the supply tank to the brakes

To increase air pressure in the service tank

To prevent air flowing from the service tank to the brakes

To prevent air flowing back from the service tank to the supply tank

Correct! Wrong!

Progress
038/40

Truck Test 4

39.Which of these supports rapid brake application and release?

The foot valve

The relay valve

The service valve

The check valve

Correct! Wrong!

Progress
039/40

Truck Test 4

40.The secondary service circuit in a dual braking system works on…?

The middle axle

The steering axle

The rear axle

The drive axle

Correct! Wrong!

Progress
040/40

How to Pass The First Time

In-Depth Study Materials
1600+ Exam-Like Questions
Exclusive Dashboard Access
Handy Topic-Wise Flashcards
Enjoy Ad-Free Studying

Your Progress 0/40

0 Correct

0 Incorrect

Passing Score 80%

Ace the DMV Exam on Your First Attempt

Unlimited mock tests

Access Over 1000 Exam Like Questions for Just $3

Get It Now

Ace the DMV Exam on
Your First Attempt

Unlimited Mock Tests

Access Over 1000 Exam Like Questions for Just $3

Sign Up/Sign In now to view your test results

Sign In

Sign Up to Unlock more Questions

Truck Test 4

1.When removing fittings or hoses from an air brake system, you should make sure that the air pressure is…?

Progress 01/40

Truck Test 4

2.If a driver has permission to operate vehicles with air brakes, what endorsement will appear on their license?

Progress 02/40

Truck Test 4

3.A typical cylinder in an air brake system can generate a force of…?

Progress 03/40

Truck Test 4

4.To qualify for an air brake endorsement in Alberta, a driver must have had a minimum of how many hours of instruction (not including breaks)?

Progress 04/40

Truck Test 4

5.When descending a long hill, you should apply the brakes…?

Progress 05/40

Truck Test 4

6.Brake components are constructed to withstand up to what temperature under hard braking?

Progress 06/40

Truck Test 4

7.If you are driving a truck and trailer combination of 20 m in length, you should allow how much following distance?

Progress 07/40

Truck Test 4

8.When a driver sees a problem, how long will they usually be between identifying the hazard and applying the brake?

Progress 08/40

Truck Test 4

9.At what pressure in psi should the park control valve pop out?

Progress 09/40

Truck Test 4

10.When braking what should you do to prevent your vehicle jerking back?

Progress 010/40

Truck Test 4

11.The first action in any air brake inspection should be what?

Progress 011/40

Truck Test 4

12.If your air brake system is colour-coded, the secondary circuit components will be what colour?

Progress 012/40

Truck Test 4

13.How many different circuits are there in an air brake system?

Progress 013/40

Truck Test 4

14.What is the most common fault found with air brake systems during commercial vehicle inspections?

Progress 014/40

Truck Test 4

15.When testing the supply circuit, the compressor should be able to build from 50 to 90 psi within what time?

Progress 015/40

Truck Test 4

16.Brake fade occurs because the brakes are…?

Progress 016/40

Truck Test 4

17.A braking system works by converting the energy of motion into what?

Progress 017/40

Truck Test 4

18.A vehicle travelling at 40 km/h will need how much more stopping power than a vehicle travelling at 20 km/h?

Progress 018/40

Truck Test 4

19.Which of these has the ultimate responsibility to ensure their vehicle has safe, properly adjusted brakes before taking a vehicle out on the road?

Progress 019/40

Truck Test 4

20.The lag time between an air brake being applied and the brake beginning to function is approximately…?

Progress 020/40

Truck Test 4

21.To perform an air brake inspection, the vehicle should be…?

Progress 021/40

Truck Test 4

22.One advantage that air brake systems have over hydraulic brake systems is that they are better able to tolerate what?

Progress 022/40

Truck Test 4

23.A tractor-trailer combination has accelerated to 100 km/h but now needs to make an emergency stop within seven seconds. The stopping force required will be approximately how many times more than the acceleration force?

Progress 023/40

Truck Test 4

24.The governor should supply more air to the tanks when the system pressure drops by approximately how much?

Progress 024/40

Truck Test 4

25.The supply circuit in an air brake system does what?

Progress 025/40

Truck Test 4

26.Which of these is not part of a simplified service brake circuit?

Progress
01/40

Progress
02/40

Progress
03/40

Progress
04/40

Progress
05/40

Progress
06/40

Progress
07/40

Progress
08/40

Progress
09/40

Progress
010/40

Progress
011/40

Progress
012/40

Progress
013/40

Progress
014/40

Progress
015/40

Progress
016/40

Progress
017/40

Progress
018/40

Progress
019/40

Progress
020/40

Progress
021/40

Progress
022/40

Progress
023/40

Progress
024/40

Progress
025/40

Progress
026/40

Progress
027/40

Progress
028/40

Progress
029/40

Progress
030/40

Progress
031/40

Progress
032/40

Progress
033/40

Progress
034/40

Progress
035/40

Progress
036/40

Progress
037/40

Progress
038/40

Progress
039/40

Progress
040/40

Ace the DMV Exam on
Your First Attempt