CDL COMBINATION PRACTICE TEST (OH)
11.
If the drive wheels begin to spin when accelerating, you should:
|
continue to accelerate.
|
|
|
take your foot off the accelerator.
|
|
|
brake gently.
|
12.
If the safety relief valve in the air brake system releases air:
|
something is wrong.
|
|
|
the valve is fully operational.
|
|
|
this will supply more power to the brakes.
|
13.
Inspecting the fifth-wheel does NOT include:
|
backing until the fifth-wheel just touches the trailer.
|
|
|
checking for missing or damaged parts.
|
|
|
checking that there are no cracks in the frame.
|
14.
You must check that all shut-off valves are in the open position except the ones:
|
on the middle trailer of a set of triples.
|
|
|
on the first trailer in a set of doubles.
|
|
|
at the back of the last trailer.
|
15.
By pushing the trailer air supply control knob in, you:
|
supply the tires with air.
|
|
|
shut the air off and put on the trailer emergency brakes.
|
|
|
supply the trailer with air.
|
16.
When backing a truck you should:
|
get out and walk around the vehicle before you begin to back.
|
|
|
look straight ahead.
|
|
|
always rely on your mirrors.
|
17.
Transporting hanging meat requires special attention. Why?
|
Because hanging meat can be an unstable load with a high center of gravity.
|
|
|
Because refrigerated trucks have less traction.
|
|
|
Because you have to drive fast to get it delivered fresh.
|
18.
Dollies with ABS are required to have a malfunction lamp:
|
on the right side.
|
|
|
on the left side.
|
|
|
on the rear.
|
19.
Air brakes use ________ to make the brakes work.
|
compressed gas cylinders
|
|
|
compressed air
|
|
|
compressed gases
|
20.
If during vehicle inspection a tire is too hot to touch, you should:
|
remain stopped until the tire cools off.
|
|
|
let air out.
|
|
|
immediately decrease air pressure.
|
GRADE ME
NOT SURE YOU WILL PASS? GET CDL PREMIUM NOW! - Learn More