Why is the Ackermann steering mechanism preferred over the Davis type in automobiles____________________?
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Answer: B. the former is having turning pair
Explanation
The Ackermann steering mechanism uses turning pairs exclusively throughout its linkage layout. Avoiding sliding pairs reduces mechanical friction, wear, and maintenance requirements significantly. Pure turning pairs provide smoother kinematic performance compared to sliding pin joints. Steering mechanisms must ensure wheels follow concentric turning circles to prevent tire scrubbing. Ackermann geometry utilizes simple pivot joints connected by a tie rod behind the front axle. Davis steering uses sliding pairs, which experience higher frictional resistance and wear rates.
Modern passenger automobiles overwhelmingly use Ackermann steering geometry for tire longevity. Vehicle handling dynamics depend on accurate steering linkage design during cornering maneuvers. Minimizing mechanical wear in steering joints is essential for vehicle safety and control. Option A is incorrect because both Ackermann and Davis provide approximate geometric steering accuracy. Option C suggests economy is the main driver, whereas kinematic pair design is the core advantage. Option D claims rigidity is the primary factor, ignoring the friction reduction from turning pairs.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
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