Brakes And Braking Systems 2 - (S)
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True or False. Wheel speed sensors send electric signals to the electronic brake control module to determine speed and rate of deceleration of each wheel.
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True
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False
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If you are planning on becoming a locomotive engineer one of the things you need to know and ensure is operating effectively is the breaking system. The quiz below is designed to see how much the unit covered this week you understood. Give it a shot and keep on revising.
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- 2.
True or False. Some traction control systems can be temporarily deactivated by a traction control system function switch located on the dash or center console.
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True
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False
Correct Answer
A. TrueExplanation
Many vehicles now offer a by pass switch to deactivate the EBCM by the driver.Rate this question:
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- 3.
The tone wheel used on an anti-lock braking system's wheel speed sensors should be checked for which of the following?
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Broken teeth
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Damaged teeth
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Missing teeth
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All of the above
Correct Answer
A. All of the aboveExplanation
Any damage to the tone wheel will effect the validity of its use.Rate this question:
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- 4.
True or False. On a vehicle with an electronic brake control module, if the yellow warning lamp is not illuminated and the brakes are not functioning properly, suspect a problem that is not monitored by the electronic brake control module.
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True
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False
Correct Answer
A. TrueExplanation
If there is a detected fault with the EBCM system, there will be a solid light to notify the driver of the fault.Rate this question:
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- 5.
The ___________________ gets its name from using the servo action in both the forward and the reverse direction.
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Twin leading shoe drum brake system
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Leading/trailing shoe drum brake system
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Duo-servo drum brake system
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None of the above
Correct Answer
A. Duo-servo drum brake systemExplanation
Two actions comprise the self energizing, duo-servo drum brake system.Rate this question:
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- 6.
Which of the following variables is related to pressure and force in a hydraulic system?
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Input force
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Working pressure
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Output force
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All the above
Correct Answer
A. All the aboveExplanation
Each of the above is a part of the pressures and force associated with a hydraulic system.Rate this question:
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- 7.
True or False. Many brake hoses use banjo fittings to connect the hose to the caliper.
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True
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False
Correct Answer
A. TrueExplanation
The brake hoses can be connected to the caliper by either directly screwing into it, or by attaching it with a banjo fitting.Rate this question:
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- 8.
Which of the following can turn on the brake warning light?
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Parking brake being engaged
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Brake fluid level being low
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Pressure being unequal in the brake system
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All of the above
Correct Answer
A. All of the aboveExplanation
All of these functions are dependent upon either a sufficient amount of brake fluid, or sufficient and equal amounts of hydraulic pressure in the system.Rate this question:
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- 9.
Tech A says that burnishing the new brake pads results in longer brake pad life. Tech B says that burnishing the new brake pads results in quiet brake life. Who is correct?
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Tech A
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Tech B
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Both Techs A and B
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Neither Tech A nor B
Correct Answer
A. Both Techs A and BExplanation
Burnishing pads will help extend pad life and to reduce potential noise.Rate this question:
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- 10.
All of the following are types of disc brake calipers, EXCEPT:
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Rotating caliper.
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Fixed caliper
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Floating caliper.
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Sliding caliper.
Correct Answer
A. Rotating caliper.Explanation
Rotating calipers do not exist.Rate this question:
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- 11.
True or False. To ensure that a leak in one brake circuit will not affect the other circuit, master cylinder reservoirs have two separate chambers.
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True
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False
Correct Answer
A. TrueExplanation
Most modern master cylinder reservoirs now have two, independent chambers to allow for operation on two different hydraulic circuits.Rate this question:
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- 12.
___________________ carry brake fluid from the master cylinder to the brake units.
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Double-walled steel lines only
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Rubber hoses only
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Doubled-walled steel lines and rubber hoses
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None of the above
Correct Answer
A. Doubled-walled steel lines and rubber hosesExplanation
Steel brake lines and hoses are the only tubes used to carry brake fluid throughout the hydraulic brake system.Rate this question:
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- 13.
The brake switch sends an electronic signal to which of the following?
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Brake lights
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Electronic brake control module
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Both A and B
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None of the above
Correct Answer
A. Both A and BExplanation
The brake switch operates the brake lights and/or it can notify the EBCM of brake pedal operation.Rate this question:
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- 14.
A typical brake pedal inspection includes which of the following?
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Brake pedal height
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Brake pedal free play
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Brake pedal travel
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All the above
Correct Answer
A. All the aboveExplanation
All of the above could be effected by a leak in the brake hydraulic system, and could also effect satisfactory brake pedal height, travel, and free play.Rate this question:
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- 15.
In a disc brake system, the dust shields help control which of the following?
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Dust
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Water
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Road debris
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All of the above
Correct Answer
A. All of the aboveExplanation
The dust shield will help is keep all of these contaminates from the disc braking system.Rate this question:
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- 16.
If the ________________ anti-lock braking system warning lamp illuminates, it typically means the vehicle's power train control module has observed a fault in the anti-lock brake system and will need to be checked for diagnostic trouble codes.
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Red
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Blue
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Yellow/amber
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None of the above
Correct Answer
A. Yellow/amberExplanation
The ABS warning light is most often yellow. It is a less threatening situation for the vehicle occupants, than low brake fluid.Rate this question:
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- 17.
Wheel speed sensors should be checked for which of the following with a DVOM?
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Open
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Ground
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High resistance
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All of the above
Correct Answer
A. All of the aboveExplanation
A wheel speed sensor could have any electrical fault.Rate this question:
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- 18.
Tech A says that if none of the brake lights illuminate when depressing the brake pedal, the problem could be the fuse or bulbs. Tech B says that if none of the brake lights illuminate when depressing the brake pedal, the problem could be the feed wire or ground. Who is correct?
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Tech A
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Tech B
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Both Techs A and B
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Neither Tech A nor B
Correct Answer
A. Both Techs A and BExplanation
Any electrical fault may limit the function of the brake lights.Rate this question:
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- 19.
Which of the following can be found on a typical drum brake shoe?
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Holes
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Slots
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Tabs for springs
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All of the above
Correct Answer
A. All of the aboveExplanation
A brake shoe has all of these.Rate this question:
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- 20.
Which of the following is a type of disc brake pad wear indicator?
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Scratcher type
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Sensor type
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Both A and B
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None of the above
Correct Answer
A. Both A and BExplanation
Both of these are options for brake pad wear indication.Rate this question:
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- 21.
Which of the following can cause brake pedal pulsation?
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Warped rotors
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Anti-lock braking system operation
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Both A and B
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None of the above
Correct Answer
A. Both A and BExplanation
Both of these will cause brake pedal pulsation, but when the ABS operates, it's considered normal.Rate this question:
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- 22.
Determining if brake fluid should be flushed can be done using which of the following methods?
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Test strip
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DVOM-galvanic reaction test
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Time and mileage
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All of the above
Correct Answer
A. All of the aboveExplanation
Each of these can be used to test the contamination level of brake fluid.Rate this question:
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- 23.
Banjo-type fittings typically include?
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Banjo fitting
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Banjo bolt
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Two copper or aluminum washers
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All of the above
Correct Answer
A. All of the aboveExplanation
The banjo fitting includes the bolt, washers to seal the connection, and the bolt itself.Rate this question:
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- 24.
True or False. Retracting the caliper piston on an integrated parking brake system is different than on a standard caliper.
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True
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False
Correct Answer
A. TrueExplanation
A special tool is required when retracting a piston on a caliper with an integrated parking brake.Rate this question:
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- 25.
Once all of the lug nuts have been torqued, go around them again, this time in a _______________ to ensure that you did not miss any in the previous pattern.
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Star pattern
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Circular pattern
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Alternating pattern
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None of the above
Correct Answer
A. Star patternExplanation
Always use a star pattern to ensure the wheel is uniformly tightened to the hub.Rate this question:
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- 26.
Tech A says that it is a good practice to research any technical service bulletins for any brake system complaint. Tech B says that it is common practice to test-drive a vehicle even if the brake pedal goes to the floor. Who is correct?
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Tech A
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Tech B
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Both Techs A and B
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Neither Tech A nor B
Correct Answer
A. Tech AExplanation
TSB's can help in repairing many brake and non-brake related repairs. If the brake pedal goes to the floor, should that vehicle be driven?Rate this question:
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- 27.
Tech A says that wheel speed senor operation can be tested with a DVOM. Tech B says that wheel speed sensor operation can be checked with an oscilloscope. Who is correct?
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Tech A
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Tech B
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Both Techs A and B
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Neither Tech A nor B
Correct Answer
A. Both Techs A and BExplanation
Both a DVOM and an oscilloscope can be used to test a wheel speed sensor.Rate this question:
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- 28.
Tech A says that fixed calipers are rigidly bolted in place and cannot move or slide. Tech B says that the sliding or floating caliper has brake pads located on each side of the rotor, but all the pistons are on only one side, usually the inside of the rotor. Who is correct?
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Tech A
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Tech B
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Both Techs A and B
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Neither Tech A nor B
Correct Answer
A. Both Techs A and BExplanation
Fixed calipers are rigidly bolted in place. Sliding calipers do only have one piston.Rate this question:
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- 29.
Tech A says that servicing the wheel bearings is a common part of a brake job if the vehicle has serviceable wheel bearings. Tech B says that if the vehicle uses non-serviceable bearings, the bearings should be checked during a brake job and replaced if they are worn out. Who is correct?
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Tech A
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Tech B
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Both Techs A and B
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Neither Tech A nor B
Correct Answer
A. Both Techs A and BExplanation
Bearings that are serviceable should always be serviced when doing a brake job. Non-serviceable bearings should be inspected for excess play during maintenance inspections and brake jobs.Rate this question:
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- 30.
Which of the following is a property of typical brake fluid used in automobile brake systems?
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High boiling point
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Low freezing point
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Hygroscopic
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All of the above
Correct Answer
A. All of the aboveExplanation
Brake fluid is better than water in the sense that it has a higher boiling point and a lower freezing point, but it does have the down fall of absorbing water, being hygroscopic.Rate this question:
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- 31.
Tech A says that the anti-chatter band used for turning brake drums is not necessary, and not installing it on the brake drum will not affect the results. Tech B says that you should always install the anti-chatter band to reduce vibration and get the correct finish on the brake drum. Who is correct?
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Tech A
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Tech B
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Both Techs A and B
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Neither Tech A nor B
Correct Answer
A. Tech BExplanation
Always use the anti-chatter / silencer band.Rate this question:
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- 32.
Tech A says that you should always start lug nuts on the wheel stud by hand. Tech B says that on some vehicles you are required to install the hubcap before installing the lug nuts. Who is correct?
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Tech A
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Tech B
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Both Techs A and B
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Neither Tech A nor B
Correct Answer
A. Both Techs A and BExplanation
Starting all fasteners by hand is best practice. Some hubcaps are held in place by the lug nuts.Rate this question:
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- 33.
Typical hydraulic control units for electronic brake control systems can have how many channels?
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Two
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Three
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Four
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All of the above
Correct Answer
A. All of the aboveExplanation
Electronic braking systems can have two, three or four channels.Rate this question:
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- 34.
Tech A says that proportioning valves reduce brake pressure to the rear wheels and are pressure-sensitive or load-sensitive. Tech B says that load-sensitive proportioning valves adjust rear brake pressure according to the weight of the vehicle's load. Who is correct?
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Tech A
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Tech B
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Both Techs A and B
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Neither Tech A nor B
Correct Answer
A. Both Techs A and BExplanation
Proportioning valves are either pressure or load sensitive and reduce the pressure to the rear wheels under normal braking. They also adjust rear brake pressure depending on the height, amount of weight, in the vehicle.Rate this question:
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- 35.
Which of the following typically reports the vehicle's speed to the electronic brake control module?
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Wheel speed sensor
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Vehicle speed sensor
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Both A and B
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None of the above
Correct Answer
A. Both A and BExplanation
Both vehicle speed and wheel speed sensors can report the vehicle speed to the vehicle computer. In some cases, the terms are synonymousRate this question:
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- 36.
Tech A says that in disc brake calipers, the piston is sealed by a stationary round section sealing ring, also called a round cut O-ring. Tech B says that in disc brake calipers, the piston is sealed by a stationary square section sealing ring, also called a square cut O-ring. Who is correct?
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Tech A
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Tech B
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Both Techs A and B
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Neither Tech A nor B
Correct Answer
A. Tech BExplanation
The seal for the piston is a stationary, square cut seal.Rate this question:
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- 37.
Tech A says that during a brake inspection, it is good practice to carefully peel back the dust boot from a wheel cylinder and see if there is any brake fluid behind the dust boot. A little brake fluid is normal. Tech B says that during a brake inspection, it is good practice to carefully peel back the dust boot from a wheel cylinder and see if there is any brake fluid behind the dust boot. If there is, the wheel cylinder is starting to leak and should be replaced. Who is correct?
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Tech A
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Tech B
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Both Techs A and B
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Neither Tech A nor B
Correct Answer
A. Tech BExplanation
Yes, peeling the seal back slightly to inspect a wheel cylinder is correct, but no fluid should be seen. If found, it is bad and needs to be replaced.Rate this question:
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- 38.
___________________ are installed so the direction they are applied is the same as the forward rotation of the drum.
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Trailing shoes
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Leading shoes
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Stationary shoes
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None of the above
Correct Answer
A. Leading shoesExplanation
Which way does a wheel turn when traveling forward? The leading shoe touches the drum first.Rate this question:
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- 39.
Tech A says that when removing a hubless-style drum, you should first make matching marks on the drum and hub for reinstallation in the correct position. Tech B says that a center punch can be used to mark the position of the drum to hub. Who is correct?
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Tech A
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Tech B
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Both Techs A and B
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Neither Tech A nor B
Correct Answer
A. Both Techs A and BExplanation
When removing brake components, always index the parts. Using a center punch is ok to make these marks.Rate this question:
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- 40.
Tech A says that when replacing a brake master cylinder, it should be bled after placing the master cylinder into the vehicle's brake system. Tech B says that when replacing a master cylinder, it should be bench bled before the master cylinder is placed into the vehicle's brake system. Who is correct?
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Tech A
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Tech B
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Both Techs A and B
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Neither Tech A nor B
Correct Answer
A. Tech BExplanation
Brake master cylinders should always be bled before being installed into a vehicle.Rate this question:
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- 41.
Tech A says that the piston on a brake caliper that integrates the parking brake will need to be screwed back in on the threaded shaft to retract it into the bore. Tech B says that you need a special tool that mates to slots, grooves, or holes in the outer face of the caliper piston. Who is correct?
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Tech A
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Tech B
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Both Techs A and B
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Neither Tech A nor B
Correct Answer
A. Both Techs A and BExplanation
A special tool is required to push the piston back in and it does line up with the grooves in the face of the caliper piston.Rate this question:
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- 42.
True or False. Disc rotors and drums can be refinished while on the vehicle or off the vehicle
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True
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False
Correct Answer
A. FalseExplanation
Drums can not be refinished while they remain installed.Rate this question:
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- 43.
Tech A says that when the brake pedal is depressed, a push rod creates the hydraulic pressure in the disc brake system. Tech B says that when the brake pedal is depressed, a push rod transfers the force through a brake booster to a hydraulic master cylinder. Who is correct?
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Tech A
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Tech B
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Both Techs A and B
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Neither Tech A nor B
Correct Answer
A. Tech BExplanation
The push rod does not create hydraulic force. It is merely an intermediate component, responsible for transferring force to the remaining brake system.Rate this question:
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- 44.
Which of the following is a recommended tool for removing brake lines from a wheel cylinder?
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Flare nut wrench
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Line wrench
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Both A and B
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None of the above
Correct Answer
A. Both A and BExplanation
Both of these provide pressure to all sides of the fitting, and allows the technician to get around line to do so.Rate this question:
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- 45.
Tech A says that bleeding an electronic brake control system is just like bleeding a non–electronic brake control system. Tech B says that if air is allowed into the electronic brake control system, it can become trapped in the hydraulic control unit, requiring a scan tool to operate the solenoid valves to help bleed the air from the electronic brake control system. Who is correct?
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Tech A
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Tech B
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Both Techs A and B
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Neither Tech A nor B
Correct Answer
A. Both Techs A and BExplanation
Both EBCM and non can be bled in the same manner, but some vehicles have an EBCM which is susceptible to allowing air to enter it, thus, requiring a scan tool to properly bleed the system.Rate this question:
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- 46.
All of the following are methods used to force air and contaminated fluid out of a brake system in a vehicle, EXCEPT:
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Vacuum bleeding.
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Pressure bleeding.
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Bench bleeding.
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Manual brake bleeding.
Correct Answer
A. Bench bleeding.Explanation
Bench bleeding does not remove contaminants from the brake fluid system; it only removes air and prepares the master cylinder for installation into the vehicle.Rate this question:
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- 47.
True or False. Wheel sensor assemblies are comprised of a toothed tone wheel and a pick-up assembly, separated by a metal plate.
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True
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False
Correct Answer
A. FalseExplanation
Nothing is to be between the toothed wheel and the sensor itself.Rate this question:
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- 48.
All of the following components are part of a parking brake system in a drum brake, EXCEPT:
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Wheel cylinder.
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Primary shoe.
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Secondary shoe.
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Brake strut rod.
Correct Answer
A. Wheel cylinder.Explanation
The wheel cylinder is not responsible for applying the parking brakes.Rate this question:
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- 49.
Tech A says that a typical wheel speed sensor can be faulty due to a sensor resistance problem. Tech B says that a typical wheel speed sensor could be faulty due to no voltage supply. Who is correct?
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Tech A
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Tech B
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Both Techs A and B
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Neither Tech A nor B
Correct Answer
A. Tech AExplanation
Typical wheel speed sensors produce voltage, so to test for supply voltage would be an invalid test.Rate this question:
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Quiz Review Timeline (Updated): Mar 20, 2023 +
Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.
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Current Version
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Mar 20, 2023Quiz Edited by
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Jan 04, 2017Quiz Created by
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