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Worksheetsch43
Total questions: 20
Worksheet time: 40mins
_______ gives greater control of the braking system to the computer, which can react more quickly and more deliberately than a driver, especially in a panic situation.
Disc brake
Band brake
Scrub brake
Brake assist
Identify the brake system that uses a metal band lined with friction material.
Scrub brake
Band brake
Hydraulic brake
Drum brake
Scrub brakes use leverage to force a ________ against one or more wheels.
metal band
friction block
asbestos brake pad
brake shoe
Tech A states that in the Traction Control System, the control unit can independently apply individual brake units even though the driver is not stepping down on the brake pedal. Tech B states that this function can also be carried out by the driver in manual mode. Who is correct?
Tech A
Tech B
Both A and B
Neither A nor B
A full brake-by-wire system does away with the hydraulic portion of the brake system and replaces it with all of the following EXCEPT:
sensors
wires
an electronic control unit
mechanically actuated motors
A regenerative braking system uses ________ to slow the vehicle during braking.
an electric motor as a generator
a parking brake
weight transfer
line pressure
Static friction is resistance between nonmoving surfaces and is present in which type of brakes?
Both parking and standard
All types
Standard
Parking
The rotational force found in a moving vehicle tends to:
Brake fade
Rotational force
Mechanical Advantage
Weight transfer
The master cylinder converts the brake pedal force into hydraulic pressure, which is then transmitted_______ via the brake lines and hoses to one or two wheel cylinders at each drum brake assembly.
With some loss
Without loss
With increased force
None of the above
A tires composition, tread style, tread condition, and inflation pressure all affect its traction.
True
False
Technician A says that in disc brake calipers, the pistons are sealed by a stationary round section sealing ring, also called a round cut O-ring. Technician 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?
Technician A
Technician B
Both Technician A and Technician B
Neither Technician A nor Technician B
All of the following are types of disc brake calipers, EXCEPT:
rotating caliper.
fixed caliper.
floating caliper.
sliding caliper.
The caliper
Is bolted to the rotor
Uses metal-to-metal friction to slow the vehicle
Uses air pressure to apply the brake pads
Straddles the rotor
Once you have identified the _________ of the fault, determine the action that will rectify the fault.
Symptoms
Superficial cause
Root cause
None of the above
The primary components of a disc brake system include all of the following EXCEPT:
rotors.
calipers.
wheel cylinders.
brake pads.
One safe way to test whether a braking problem is at the front or rear brakes is to drive at a low speed and:
lightly apply the service brakes.
lightly apply the parking brake.
repeatedly tap the service brakes.
pull hard on the parking brake lever.
Technician A says that when measuring a rotor's thickness variation, you should measure the rotor in a minimum of five to eight places around the face of the rotor. Technician B says that as long as the rotor faces look smooth after machining them, you don't have to measure them again. Who is correct?
Technician A
Technician B
Both Technician A and Technician B
Neither Technician A nor Technician B
When installing lug nuts, weight should be off the vehicle because:
its easier to check the wheel for proper balance.
an impact wrench can then be used to tighten the lug nuts.
the lug nuts can center the wheel on the hub.
the lug nuts will be easier to cross-thread when installing them on the wheel studs.
Tech A says that some ABS wheel speed sensors create a square wave digital pattern. Tech B says that some wheel speed sensors create an AC sine wave pattern. Who is correct?
Tech A
Tech B
Both A and B
Neither A nor B
Technician A says that disc brake pads require much higher application pressure to operate than drum brake shoes because they are not self-energized. Technician B says that the square-cut O-ring (rather than springs) is what retracts the caliper piston when the brake pedal is released. Who is correct?
Technician A
Technician B
Both Technician A and Technician B
Neither Technician A nor Technician B
