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Maximum possible efficiency of a self-locking screw is
- a)50%
- b)75%
- c)66%
- d)33%
Correct answer is option 'A'. Can you explain this answer?
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Verified Answer
Maximum possible efficiency of a self-locking screw isa)50%b)75%c)66%d...
Explanation: For self locking screw Ǿ(friction angle)>ἀ (helix angle), hence efficiency < tanǾ/tan(Ǿ+ἀ) or efficiency < tanǾ(1-tan²Ǿ)/2tanǾ.
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Maximum possible efficiency of a self-locking screw isa)50%b)75%c)66%d...
Efficiency of a Self-Locking Screw
Self-locking screws are designed to prevent loosening due to vibrations or other forces acting on the joint. The efficiency of a self-locking screw refers to the percentage of the input torque that is effectively converted into clamping force to prevent loosening.
Maximum Efficiency
The maximum possible efficiency of a self-locking screw is 50%. This means that only half of the input torque applied to the screw is converted into clamping force. The other half of the torque is lost due to friction and other factors.
Explanation
Self-locking screws typically have a certain amount of friction built into their design to prevent loosening. This friction, while necessary for the screw to function properly, also results in a loss of torque that cannot be converted into clamping force. As a result, the maximum efficiency of a self-locking screw is limited to 50%.
Importance
It is important to understand the efficiency of self-locking screws when designing and using mechanical systems. By knowing the limitations of these screws, engineers can account for the loss of torque and ensure that the joints are properly secured to prevent loosening.
Conclusion
In conclusion, the maximum possible efficiency of a self-locking screw is 50%, meaning that only half of the input torque is converted into clamping force. This efficiency limit is due to the friction present in the screw design.
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Maximum possible efficiency of a self-locking screw isa)50%b)75%c)66%d)33%Correct answer is option 'A'. Can you explain this answer?
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