Intro to Millwright Practice Exam

What is a heavy-duty rolling device with a continuous track of small rollers used to assist in moving heavy equipment?

1. Skateboard

2. Roller Skate

3. Dolly

4. Pallet Jack

The correct answer is: Roller Skate

The device described in the question refers to a heavy-duty rolling device with a continuous track of small rollers, which is typically used to assist in moving heavy equipment. The correct answer is that this device is known generically as a "dolly." Dollies come in various configurations, but they often feature a base with multiple wheels or rollers designed to distribute the weight of the heavy object and facilitate its movement across flat surfaces. When employed, the rollers allow for smooth navigation of heavy loads, significantly reducing the effort required to move them. In contrast, skateboards and roller skates are designed for recreational purposes and do not provide the structural support or wheel arrangement necessary for transporting heavy equipment. A pallet jack, while useful for moving pallets and similar loads, does not utilize a continuous track of small rollers but rather forks that lift the load for easier transport. Therefore, the attributes of the device described in the question align closely with those of a dolly rather than the other options.