Which of the following best describes hypoid gears?

Hypoid gears are characterized by their ability to transmit motion between non-parallel and non-intersecting axes. This unique design feature allows hypoid gears to mesh smoothly while operating at an angle, which is essential in applications such as automotive differential systems where power must be transmitted effectively between the drive shaft and the wheels.

The non-parallel and non-intersecting configuration enables the gears to have a larger contact area and smoother engagement compared to other gear types. This results in reduced friction and wear, leading to increased efficiency and longevity of the gear system. The specific geometry of hypoid gears allows them to support larger loads and operate quietly, which makes them invaluable in various mechanical systems that require reliable power transmission at an angle.

The other choices represent configurations that do not accurately describe the operational characteristics of hypoid gears. Understanding the distinct arrangement of hypoid gears helps to clarify their applications in different mechanical setups where angular transmission of power is required.