DOUBLES TRIPLES TEST SC - CDL PRACTICE TEST

11. When you push in the red trailer air supply knob, this will:
supply air to the emergency supply lines.
disconnect the electrical connector.
disconnect the air lines from the trailer.
open the emergency line shut-off valve at the rear of the last trailer.
12. Exhaust system parts should NOT:
be loose.
rub against fuel system parts.
rub against tires.
All of the above.
13. The trolley valve should be used only:
in driving.
to prevent skids.
to test the trailer brakes.
in an emergency.
14. For a cargo fire in a box trailer, you should:
open the doors immediately and use the fire extinguisher.
use the fire extinguisher on the doors.
keep the doors shut.
wait 10 minutes before opening the doors.
15. Which of the following is NOT true?
ABS will change the way you normally brake.
ABS won't compensate for bad brakes.
ABS only comes into play when a wheel would have locked up because of over braking.
ABS won't compensate for poor brake maintenance.
16. When more cargo is piled up in a truck, the center of gravity moves:
to the right side of the truck.
closer to the ground.
higher up from the road.
to the left side of the truck.
17. The parking brake:
should be used when you need to apply the brakes firmly.
should be used whenever you park.
should be used when driving in bad weather.
All of the above.
18. When driving trucks with trailers, drivers should:
make quick lane changes.
push the brake pedal to the floor when braking.
decrease their following distance.
avoid making sudden movements with the steering wheel.
19. What is Gross Vehicle Weight?
The total weight of the cargo
The total weight of a combination of vehicles excluding the load
The total weight of a single vehicle, including its load
The total weight of a single vehicle, excluding its load
20. You should NOT use the parking brakes if:
the brakes are too dry.
the brakes are cold.
the brakes are very hot.
All of the above.
GRADE ME
NOT SURE YOU WILL PASS? GET CDL PREMIUM NOW! - Learn More