Question

technician a says that the thicker or heavier the disc brake rotor, the more heat can be absorbed. technician b says that the faster the vehicle is traveling when the brakes are applied, the greater the amount of heat created in the brake system. which technician is correct?

technician a only

technician b only

both technicians

neither technician

question 6

1 pts

all of the following are types of brake fade except ________.

rotor fade

lining fade

mechanical fade

gas fade

Explanation:

• For the first question:
• Technician A: A thicker or heavier disc brake rotor has a larger mass. According to the heat - absorption formula \(Q = mc\Delta T\) (where \(Q\) is heat absorbed, \(m\) is mass, \(c\) is specific heat capacity, and \(\Delta T\) is temperature change), a larger mass (\(m\)) can absorb more heat (\(Q\)) for a given specific heat capacity (\(c\)) and temperature change (\(\Delta T\)).
• Technician B: The kinetic energy of a vehicle is \(E_{k}=\frac{1}{2}mv^{2}\). When brakes are applied, kinetic energy is converted into heat energy in the brake system. A faster - moving vehicle (larger \(v\)) has more kinetic energy. So, more heat is created in the brake system when the vehicle is traveling faster.
• For the second question:
• Lining fade occurs due to changes in the brake lining material at high temperatures.
• Mechanical fade is related to the mechanical deformation of brake components under high - force conditions.
• Gas fade is caused by the outgassing of materials (such as from the brake lining) at high temperatures, which can reduce braking efficiency.
• Rotor fade is not a standard type of brake fade. Brake fade is mainly related to the brake lining, the presence of gas (from lining or other components), and mechanical deformation of non - rotor (e.g., caliper, piston) components in a more common classification.

Answer:

• First question: Both technicians
• Second question: Rotor fade