Technician A says spur-cut gears have teeth cut at an angle. Technician B says spur-cut gears run without creating gear whine. Who is correct?

Question

Quizplus · Accepted Answer

Spur-cut gears have teeth that are straight and not cut at an angle; this is a characteristic of helical gears. Spur gears are known for creating gear whine, especially at high speeds, contrary to Technician B's statement.

Technician a Says Spur-Cut Gears Have Teeth Cut at an Angle