Truck Test 5

1.On a combination unit, the governor should place the compressor in the unloading stage between _ psi minimum and _ psi maximum.

150, 175

125, 145

100, 115

100, 125

Correct! Wrong!

Progress
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Truck Test 5

2.Which of the following is considered the 'brain' of an anti-lock braking system?

Tooth wheel

ABS valves

Electronic control unit

Wheel sensor

Correct! Wrong!

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Truck Test 5

3.The amount of force available at the push rod is consistent out to ____ inches of stroke.

Three

Two

Four

One

Correct! Wrong!

Progress
03/45

Truck Test 5

4.What does a kPa stand for?

Kilogram

Kilometre

Pressure per square inch

Kilopascal

Correct! Wrong!

Progress
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Truck Test 5

5.What is the function of a 'spitter' valve on a reservoir?

Automatically exhausts moisture from the reservoir when required

Holds a supply of compressed air

Transmits force in an air brake system

Allows the air to flow in one direction only

Correct! Wrong!

Progress
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Truck Test 5

6.A relay valve has two uses. Which of the following is one of them?

Reducing the braking effort to the front wheels

Connecting the control (service) and supply (emergency) lines of the trailer to the tractor

Discharging the application air near the brake chambers

Release the brakes quicker when a brake application is released.

Correct! Wrong!

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Truck Test 5

7.On spring operated parking brakes, during normal operation, air pressure _________ the spring, holding it ready for parking or emergency braking.

Cages

Applies

Decompresses

Coils

Correct! Wrong!

Progress
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Truck Test 5

8.What will a tractor protection valve with a broken return spring cause?

An emergency brake application on the trailer until a brake application was made

Brake fade

The brake drum to crack or warp

Loss of air during normal brake applications if operating the tractor without a trailer

Correct! Wrong!

Progress
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Truck Test 5

9.The _______ adjusts the free play in the linkage between the pushrod and the brake shoes.

Push rod

S-cam

Brake adjuster

Clevis and pin

Correct! Wrong!

Progress
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Truck Test 5

10.The electronic engine control is activated automatically by the ATC if all the wheels begin to slip. What effect does this have?

Air from the trailer reservoir released to the brake chambers.

Brakes applied and released up to five times a second

Engine power is reduced

Causes the limiting valve to operate

Correct! Wrong!

Progress
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Truck Test 5

11.On a combination vehicle, what is the first step in a tractor protection valve check?

Release the spring parking brake

Disconnect supply (emergency) line glad hand

Disconnect control (service) line glad hand

Make full brake application

Correct! Wrong!

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Truck Test 5

12.A brake chamber is a circular container divided in the middle by a flexible ________.

Push rod

Slack adjuster

Diaphragm

Mounting bolt

Correct! Wrong!

Progress
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Truck Test 5

13.Braking distance is defined as:

The actual distance the vehicle travels after the brake is applied until the vehicle stops

The time it takes the air to travel through a properly maintained air brake system

A combination of driver's reaction time, brake lag, and stopping distance

The time it takes from the moment a hazard is recognized to the time the brake is applied,

Correct! Wrong!

Progress
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Truck Test 5

14.Friction produces what?

Air pressure

Convection

Lubrication

Heat

Correct! Wrong!

Progress
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Truck Test 5

15.Air that is squeezed into a much smaller space than it normally would occupy is said to be ________.

Caged

Contained

Canned

Compressed

Correct! Wrong!

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Truck Test 5

16.What is the best way to avoid major breakdowns?

Verifying the system is at full pressure

Preventative maintenance

Watching the dash gauges

Listening for audible air leaks

Correct! Wrong!

Progress
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Truck Test 5

17.For a vehicle to move along the highway, an internal combustion engine must convert its _ energy into __ energy.

Motion, mechanical

Friction, Heat

Mechanical, heat

Heat, mechanical

Correct! Wrong!

Progress
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Truck Test 5

18.A vehicle carrying a load of 20,000 kg at 20 km/h is brought to a stop in 45 metres with normal application of the brakes. If this same vehicle carried 40,000 kg at 40 km/h, it would require ____ times the braking force to stop the vehicle in 45 metres.

Eight

Ten

Four

Two

Correct! Wrong!

Progress
018/45

Truck Test 5

19.Which of the following is NOT a component of an air brake system?

A foot valve

A governor

Spring parking brake chambers

A compressor

Correct! Wrong!

Progress
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Truck Test 5

20.What is a reason a medium sized vehicle would use air over hydraulic brakes?

Gain a mechanical advantage

It gives the option of pulling an air brake equipped trailer.

Increase stopping distance

Decrease the vehicle weight

Correct! Wrong!

Progress
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Truck Test 5

21.What absorbs the heat produced by friction?

Brake lining

Metal brake drums

Diaphragm

Treadle

Correct! Wrong!

Progress
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Truck Test 5

22.What are the two most common slack adjuster problems?

Seized shoe anchors, lining wear

Excessive premature wear and internal contamination.

Oversize drums, internal contamination

Lining wear, excessive moisture

Correct! Wrong!

Progress
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Truck Test 5

23.The __ the air supply is kept, the chance of brake problems.

More compressed, less

Warmer, less

Cleaner, less

Colder, less

Correct! Wrong!

Progress
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Truck Test 5

24.Ultimately, it is the _______ responsibility to ensure that brakes are adjusted correctly.

Technician's

Mechanic's

Owner's

Driver's

Correct! Wrong!

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Truck Test 5

25.On spring brake systems, during full brake application, compounding of the force applied on the slack adjusters and linkage can be said to be a combination of two forces: the force applied by the _ and the _.

Spring brakes, compressor

Service brakes, mounting bolts

Clevis, pin

Spring brakes, service brakes

Correct! Wrong!

Progress
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Truck Test 5

26.What methods can the driver use to stay aware of the condition of the vehicle's braking system?

Feeling the brake response of the vehicle

Watching the gauges

Listening for warning signals

All of the below

Correct! Wrong!

Progress
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Truck Test 5

27.Which of the following is NOT true about automatic traction control?

The system uses two functions: differential braking and electronic engine control

Uses controlled braking to gain traction

Improves the ability of the driver to manoeuvre the vehicle on slippery surfaces

Monitors wheel speed at all times and controls wheel speed while braking

Correct! Wrong!

Progress
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Truck Test 5

28.Normally on an S-cam brake with automatic slack adjustment, brake applications of psi per day will keep the brakes properly adjusted.

One, 100-120

Three to five, 40-70

Two, 80-100

Two to four, 80-100

Correct! Wrong!

Progress
028/45

Truck Test 5

29.At a truck stop before a downgrade, what needs to be checked before continuing to drive?

That the glad hands and the lines are secure

All of the below

That the trailer supply valve is operating properly

That the push rod travel is within limitations on all chambers

Correct! Wrong!

Progress
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Truck Test 5

30.The ____ of the drum brakes determines the amount of _ they are able to absorb and dissipate into the atmosphere.

Diameter, friction

Thickness, heat

Strength, force

Width, friction

Correct! Wrong!

Progress
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Truck Test 5

31.Which of the following is NOT a component of a spring parking brake system?

Front and rear service reservoirs

Compressor

Relay valve

Trailer spring parking brake valve

Correct! Wrong!

Progress
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Truck Test 5

32.Shifting should be done while taking a curve because:

It is easier to shift when at an angle

It is the safest time to do so

Shifting should not be done while taking a curve

You have more time to focus on the task

Correct! Wrong!

Progress
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Truck Test 5

33.What part of the lane should you ride in to discourage others from trying to share the left lane?

In the centre of the lane

In the left part of the lane

In the left tire track

In the right tire track

Correct! Wrong!

Progress
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Truck Test 5

34.The driver must check which of the following during a vehicle inspection:

Correct brake adjustment

Presence of loose wheel fasteners

Tire condition, including tread depth, air leaks and the presence of bulges

All of the above

Correct! Wrong!

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Truck Test 5

35.Your feet should be positioned:

A few inches from the ground

Resting just above the controls

Firmly on the footrest

None of the above

Correct! Wrong!

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Truck Test 5

36.Scanning the road ahead helps drivers to:

See cars and people up ahead

See hazards up ahead

See road signs or driving information

All of the above

Correct! Wrong!

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Truck Test 5

37.What is the maximum number of hours a commercial vehicle driver can be on-duty after a period of seven consecutive days?

40 hours

70 hours

60 hours

50 hours

Correct! Wrong!

Progress
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Truck Test 5

38.If you are practising under a Class 1 or Class 3 learner

The supervisor

The supervisor and other learners

Persons over 19 years of age

Persons over 21 years of age The question was not answered

Correct! Wrong!

Progress
038/45

Truck Test 5

39.What happens when you put on the brakes by pushing down the brake pedal?

Air pressure is applied to the brake pads

The air pressure is reduced to the brake pads

Compressed air is let go out of the system

None of the above

Correct! Wrong!

Progress
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Truck Test 5

40.When you approach a bus that has flashing red lights, you are required to:

Honk to let the bus know you are in close proximity

Slow down

Stop

Speed up

Correct! Wrong!

Progress
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Truck Test 5

41.When passing cars, staying in the left portion of the lane helps avoid:

Cars pulling out

Getting hit from people opening doors

People stepping in between cars

All of the above

Correct! Wrong!

Progress
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Truck Test 5

42.No matter how small the cargo is, it should have at least:

1 tie down

2 tie downs

6 tie downs

Small loads do not have to have tie downs

Correct! Wrong!

Progress
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Truck Test 5

43.How far away from a stop sign must you be to park on the curb of the road?

5 metres

15 metres

7.5 metres

10 metres

Correct! Wrong!

Progress
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Truck Test 5

44.When going down a steep hill, you should:

Put your car into neutral

Shift to a higher gear

Slam on the brakes

Shift to a lower gear

Correct! Wrong!

Progress
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Truck Test 5

45.Worn or uneven tire tread will:

Damage the brake lines

Make the bike go faster

Affect the handling of the motorcycle

All of the above

Correct! Wrong!

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Truck Test 5

1.On a combination unit, the governor should place the compressor in the unloading stage between ___ psi minimum and ___ psi maximum.

Progress 01/45

Truck Test 5

2.Which of the following is considered the 'brain' of an anti-lock braking system?

Progress 02/45

Truck Test 5

3.The amount of force available at the push rod is consistent out to ____ inches of stroke.

Progress 03/45

Truck Test 5

4.What does a kPa stand for?

Progress 04/45

Truck Test 5

5.What is the function of a 'spitter' valve on a reservoir?

Progress 05/45

Truck Test 5

6.A relay valve has two uses. Which of the following is one of them?

Progress 06/45

Truck Test 5

7.On spring operated parking brakes, during normal operation, air pressure _________ the spring, holding it ready for parking or emergency braking.

Progress 07/45

Truck Test 5

8.What will a tractor protection valve with a broken return spring cause?

Progress 08/45

Truck Test 5

9.The _______ adjusts the free play in the linkage between the pushrod and the brake shoes.

Progress 09/45

Truck Test 5

10.The electronic engine control is activated automatically by the ATC if all the wheels begin to slip. What effect does this have?

Progress 010/45

Truck Test 5

11.On a combination vehicle, what is the first step in a tractor protection valve check?

Progress 011/45

Truck Test 5

12.A brake chamber is a circular container divided in the middle by a flexible ________.

Progress 012/45

Truck Test 5

13.Braking distance is defined as:

Progress 013/45

Truck Test 5

14.Friction produces what?

Progress 014/45

Truck Test 5

15.Air that is squeezed into a much smaller space than it normally would occupy is said to be ________.

Progress 015/45

Truck Test 5

16.What is the best way to avoid major breakdowns?

Progress 016/45

Truck Test 5

17.For a vehicle to move along the highway, an internal combustion engine must convert its _____ energy into ______ energy.

Progress 017/45

Truck Test 5

18.A vehicle carrying a load of 20,000 kg at 20 km/h is brought to a stop in 45 metres with normal application of the brakes. If this same vehicle carried 40,000 kg at 40 km/h, it would require ____ times the braking force to stop the vehicle in 45 metres.

Progress 018/45

Truck Test 5

19.Which of the following is NOT a component of an air brake system?

Progress 019/45

Truck Test 5

20.What is a reason a medium sized vehicle would use air over hydraulic brakes?

Progress 020/45

Truck Test 5

21.What absorbs the heat produced by friction?

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Truck Test 5

22.What are the two most common slack adjuster problems?

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Truck Test 5

23.The ________ the air supply is kept, the ______ chance of brake problems.

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Truck Test 5

24.Ultimately, it is the _______ responsibility to ensure that brakes are adjusted correctly.

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Truck Test 5

25.On spring brake systems, during full brake application, compounding of the force applied on the slack adjusters and linkage can be said to be a combination of two forces: the force applied by the _________ and the _________.

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Truck Test 5

26.What methods can the driver use to stay aware of the condition of the vehicle's braking system?

1.On a combination unit, the governor should place the compressor in the unloading stage between _ psi minimum and _ psi maximum.

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17.For a vehicle to move along the highway, an internal combustion engine must convert its _ energy into __ energy.

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23.The __ the air supply is kept, the chance of brake problems.

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25.On spring brake systems, during full brake application, compounding of the force applied on the slack adjusters and linkage can be said to be a combination of two forces: the force applied by the _ and the _.

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28.Normally on an S-cam brake with automatic slack adjustment, brake applications of psi per day will keep the brakes properly adjusted.

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30.The ____ of the drum brakes determines the amount of _ they are able to absorb and dissipate into the atmosphere.

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