missed questions Flashcards
true or false a heavier vehicle will generate more brake heat when coming to a stop
true
what is axle weight
the amount of weight applied to the ground by one or more sets of axles
if your vehicle breaks down on the side of a two lane road where should you place the safety triangles
two should be placed behind the vehicle at about 10 and 100 feet with one about 100 feet in the front
at 55mph a typical commercial vehicle will have travelled…..
about 2-3 lengths of the vehicle
in the event of a collision you should always keep what in mind
most large vehicles can turn better than they can stop
at 55mph you will have traveled______ before you have time to react to a hazard
about 60 feet
what should the supports be after coupling with a trailer
the crank handle should be secured and the feet should be fully raised
how much psi should a combination vehicle NOT lose with the engine off and brakes applied
4 psi
describe a jackknife situation
when the drive wheels lock up and the tractor spins out sideways when moving forward
the maximum air leakage rate per minute with the engine and the brakes off should be no more than…
3 psi
what should happen when testing the trailer protection valve
pop out and go from normal to emergency
what will happen if you cross the trailer airlines
you can drive it away if there is no spring break
if you are testing the trailer spring and parking brakes what should happen to the air valves
the service and parking break should be off, trailer supply out, and the trolley released
at 55mph a typical commercial vehicle will have traveled ______
about 400 feet
true or false convex mirrors make objects appear larger than they appear
false, convex mirrors have a wider field of view than flat mirrors
