OH CDL AIR BRAKES PRACTICE TEST
11.
When you make a quick lane change, the crack-the-whip effect can turn the trailer over. The crack-the-whip effect is caused by:
|
strong wind.
|
|
|
the rear trailer of a triple.
|
|
|
rearward amplification.
|
12.
When you apply the brakes, the brake shoes and linings are pushed against:
|
the s-cam.
|
|
|
slack adjusters.
|
|
|
the inside of
the brake drum.
|
13.
You are going down a steep grade. Once the vehicle is in the proper low gear, you should brake just hard enough to feel a slowdown, and then release the brakes when your speed has been reduced to ____ below your safe speed.
|
10 mph
|
|
|
15 mph
|
|
|
5 mph
|
14.
In vehicles with air brakes, the air compressor governor:
|
controls when the air storage tanks will pump air into the air compressor.
|
|
|
controls when the air compressor will pump air into the air storage tanks.
|
|
|
controls how much air the air compressor will pump into the air storage tanks.
|
15.
Parking brakes are:
|
not required on trailers.
|
|
|
required on all vehicles.
|
|
|
not required on commercial vehicles with air brakes.
|
Next page
NOT SURE YOU WILL PASS? GET CDL PREMIUM NOW! - Learn More