AL CDL COMBINATION PRACTICE TEST
11.
If you unlock the pintle hook with the dolly still under the rear trailer:
|
steam and boiling water can spray under pressure.
|
|
|
the dolly tow bar may fly up.
|
|
|
your vehicle might roll away.
|
|
|
the brakes could be damaged by the combined forces of the springs and the air pressure.
|
12.
A truck tractor with _________ requires the shortest stopping distance.
|
an empty trailer
|
|
|
a fully loaded trailer
|
|
|
Weight has no impact on stopping distance.
|
|
|
a lightly loaded trailer
|
13.
The front trailer supports are up, and the trailer is resting on the tractor. Make sure:
|
there is enough clearance between the rear of the tractor frame and the landing gear.
|
|
|
the electrical and air connections are properly connected between the tractor and the trailer.
|
|
|
there is enough clearance between the top of the tractor tires and the nose of the trailer.
|
|
|
All of the above.
|
14.
With brake drums, if brakes become too hot:
|
the air compressor will kick on to cool the brakes.
|
|
|
the brakes may stop working.
|
|
|
the brakes will supply too much power to the drive wheels.
|
|
|
your ABS will malfunction.
|
15.
Foundation brakes are used:
|
only with the front wheels.
|
|
|
only with the rear wheels.
|
|
|
only with the right wheels.
|
|
|
at each wheel.
|
16.
You should always try to back toward the driver's side because:
|
you can more easily correct any steering errors.
|
|
|
you can watch the rear of your vehicle out the side window.
|
|
|
backing toward the left side is more dangerous.
|
|
|
None of the above.
|
17.
If a worker is close to the roadway in a work zone, you should:
|
reduce your speed below the posted speed limit.
|
|
|
pull off the road and stop.
|
|
|
drive on the shoulder.
|
|
|
drive at the posted speed limit.
|
18.
You are driving a heavy vehicle with a manual transmission, and you have to stop on the shoulder while driving on an uphill grade. When putting your vehicle back in motion up the grade, you should:
|
keep the clutch slipping while slowly accelerating.
|
|
|
use the parking brake to hold the vehicle until the clutch engages.
|
|
|
shift down to a speed that you can control without using the brakes.
|
|
|
partly engage the clutch before you take your right foot off the brake.
|
19.
During your inspection, you should look into the fifth-wheel gap and check that the _________ are fully closed around the kingpin.
|
locking jaws
|
|
|
lug nuts
|
|
|
mounting bolts
|
|
|
couplings (U-joints)
|
20.
If you feel drowsy while driving, what should you do?
|
Pull off the road and get some sleep.
|
|
|
Turn on the radio to keep you awake.
|
|
|
Eat heavy foods.
|
|
|
Get an energy drink.
|
GRADE ME
NOT SURE YOU WILL PASS? GET CDL PREMIUM NOW! - Learn More