Exam All Answers and
Illustrations Given
Which type of drum is most common in passenger vehicles?
Choose one answer.
a. Hubless-style drum
b. Rotor-style drum
,c. Hub-style drum
d. Rotorless-style drum - ANSWER ✔✔a. Hubless-style drum
A(n) __________________ is commonly used to activate drum-type
friction brakes on a trailer that its gross weight exceeds a certain value.
Choose one answer.
a. surge brake
b. electric braking system
c. Both A and B
d. None of the answers listed - ANSWER ✔✔b. electric braking
system
Technician A says that as moisture levels increase in brake fluid, the
boiling point of the brake fluid decreases. Technician B says that the
,result of brake fluid boiling in brake systems is a spongy pedal and a
loss of braking effort at the wheels. Who is correct?
Choose one answer.
a. Technician A
b. Technician B
c. Both Technician A and Technician B
d. Neither Technician A nor Technician B - ANSWER ✔✔c. Both
Technician A and Technician B
The amount of friction between two moving faces in contact with each
other is expressed as a ratio and is called:
Choose one answer.
a. friction.
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, b. the coefficient of heat.
c. the coefficient of friction.
d. heat ratio. - ANSWER ✔✔b. the coefficient of heat
Technician A says that wheel speed sensors are a highly probable cause
of illuminated EBC warning lamps. Technician B says that using the
diagnostic codes can help determine which wheel speed sensor or
sensor circuit is at fault. Who is correct?
Choose one answer.
a. Technician A
b. Technician B
c. Both Technician A and Technician B