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WorksheetsBraking priciples
Total questions: 10
Worksheet time: 5mins
Which Greek letter is used to represent the coefficient of friction
Pi (π)
Mu (μ
Delta (Δ)
Omega (Ω)
The amount of asbestos in brake friction material is being restricted because ________.
it is a health hazard
it causes excessive brake drum/rotor wear
it does not transfer heat to the drum/rotor
asbestos from brakes contaminate rivers and streams
What type of binder is used in all brake friction materials?
Phenolic resin
Rubber scrap
Carbon
Ceramic powders
An edge code reading for coefficient of friction is EF. This means ________.
the coefficient of friction is 0,50
the coefficient of friction is higher when the brakes are cold
a higher quality brake has a code of FF
the coefficient of friction is higher when the brakes are hot
What can the driver do to reduce the possibility of brake fade caused by heat?
Pump the brake pedal while descending a steep hill
Shift the transmission into neutral and allow the vehicle to coast down long or steep hills
Ride the brakes to keep the shoes and pads against the drum or rotor
Select a lower transmission gear
Brake fade can occur due to ________.
gas fade
mechanical fade
water fade
Any of the above
Why is copper being reduced in brake friction materials?
Because it is a health concern when it becomes airborne
To help reduce the cost of the brake pads/linings
To help reduce the weight of the vehicle
It can affect life in rivers and streams
The kinetic energy of a vehicle traveling at 60 mph is ________ when compared to the same vehicle traveling at 30 mph.
twice as much
four times as much
ten times higher
three times higher
All of the following are correct statements about braking EXCEPT ________.
kinetic energy must be absorbed by the braking system
if the vehicle weight is doubled, the kinetic energy of a moving vehicle is doubled
kinetic energy of a vehicle doubles when the speed doubles
the heavier the vehicle, the greater the kinetic energy when moving
Technician A says that the front brakes do most of the braking because the front brakes are larger. Technician B says that due to weight transfer, most of the braking force needs to be done by the front brakes. Which technician is correct?
Tech A
Tech B
Both Tech A and Tech B
Neither Tech A nor Tech B
