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Terms in this set (74)
,2. The Driver The correct answer is D. Federal Motor
Vehicle Inspection Vehicle Safety Standards ( FMVSS )
Report DVIR require the driver to submit a DVIR to
should be their motor carrier or owner at the end
submitted : of each day . The DVIR is used to
A. according to identify defects or deficiencies that
the vehicle would result in a mechanical breakdown
maintenance or effect the safe operation of a vehicle
schedule Once a driver submits the DVIR , a
B. when a failure motor carrier or its agent must
occurs investigate and repair the defect or
C. weekly deficiency .
D. daily
,3. Which of the 3. The correct answer is C. The governor
following cannot controls the air compressor output by
cause a drum on unloading or cycling it . It has no direct
an air - braked effect on the mechanical brake parts .
vehicle to While the pressure setting is important
overheat ? to maintain air brake system pressure
A. an over - within acceptable limits , an incorrect
tightened brake setting will not cause the drum on an air
adjuster at that - braked vehicle to overheat . All other
wheel choices given , however , will cause
B. under - adjusted overheating problems .
brake ( s )
elsewhere on the
vehicle
C. too - high
governor cut - out
pressure
D. driving downhill
in too high a gear.
, 4. All the brakes 4. The correct answer is D. Only a brake
drag on a truck pedal with no free travel will cause all
with hydraulic of the brakes to drag . Answer A - air in
brakes . Which of the hydraulic system , will cause a
the following spongy pedal , while answer B - too
could be the high a vacuum to the power booster ,
cause ? A. air in won't affect brake drag at all . Answer C
the hydraulic , a leaking secondary cup in the master
system cylinder , could increase pedal travel ,
B. too high a but won't cause the brakes to drag .
vacuum supply to
the power brake
booster
C. a leaking
secondary cup in
the master
cylinder
D. no brake pedal
free travel