What is the maximum angular misalignment permissible between two connected shafts using a single Hooke’s joint ________________?
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Answer: D. 40°
Explanation
A single Hooke joint exhibits severe output velocity fluctuations at high operating angles. Geometric constraints limit a single universal joint to a maximum recommended misalignment of 40 degrees. Exceeding this angular threshold causes rapid wear and uneven rotational power transmission. Hooke joints, or universal joints, connect intersecting shafts whose axes are not collinear. Cardan joints transmit rotary motion between non-parallel shafts with cyclical velocity variations. Double universal joints are often paired in driveshafts to cancel out inherent velocity fluctuations.
Automotive drive shafts use universal joints to accommodate suspension movement and transmission angle changes. Industrial power transmission drives use U-joints carefully aligned within manufacturers' angle limits. Exceeding angular limits in drive shafts causes severe vibration, noise, and premature component fatigue. Option A, B, and C represent smaller angular misalignments that are well within safe operating limits. Option E proposes 60 degrees, which is excessively high and would cause binding and immediate joint failure. Standard engineering manuals specify 40 degrees as the upper boundary for single joint operation.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
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