What transmission device is used between non-parallel, non-intersecting rotating shafts__________________?
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Answer: D. worm gear
Explanation
Worm gears are used for transmitting power between non-parallel, non-intersecting rotating shafts. The worm features a screw-like thread that meshes with a mating worm wheel gear. This configuration allows high gear reduction ratios across skew axes successfully. Skew shafts are non-parallel and do not intersect in three-dimensional space. Worm gear sets provide compact packaging and high torque multiplication in mechanical drives. Sliding contact predominates in worm gearing, requiring specialized lubrication and materials.
Steering gearboxes in vehicles and heavy industrial hoists utilize worm gears for self-locking capability. Conveyor drives use worm reducers to change shaft directions while achieving high torque reduction. Engineers select worm gears when large speed reductions are needed in limited physical spaces. Option A describes spur gears used exclusively for parallel intersecting shaft arrangements. Option B names spiral gears used for non-parallel shafts but with different contact mechanics. Option C describes bevel gears designed for intersecting shafts rather than skew axes.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
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