CDL Combination Vehicles TestCoupling and UncouplingMedium
A driver is connecting the electrical cable between the tractor and trailer. What is the primary reason for ensuring the cable has enough slack but does not drag on the ground?
- ATo prevent excessive voltage drop.
- BTo ensure ABS functionality.
- CTo avoid damage from pinching, chafing, or snagging.
- DTo allow for easier disconnection during uncoupling.
Show answer & explanationAnswer & explanation
Correct answer: C. To avoid damage from pinching, chafing, or snagging.
Proper slack in the electrical cable prevents it from being stretched or pulled tight during turns, while keeping it off the ground avoids damage from road debris, pinching, chafing, or snagging on obstacles.
Why the other options are wrong
- A. Voltage drop is generally not an issue with proper cable length and gauge.
- B. While ABS relies on the electrical connection, slack management is about physical protection.
- D. Ease of disconnection is a minor consideration compared to cable integrity.
Electrical Cable Management
Proper management of the coiled electrical cable involves ensuring adequate slack for turns without allowing it to drag on the ground, preventing damage.
- Prevents physical damage to cable.
- Ensures reliable electrical connection.
- Critical for lights and ABS.
Memory trick: Slack but not dragging, keeps the power tagging.