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Q. |
Bolts in structures are often tightened upto or beyond the yield point because |
A. | frction is more beyond yield point thus providing a firm joint |
B. | temperature variations may loosen the joint |
C. | it improves endurance strength |
D. | all of the above |
E. | Increasing the diameter of threaded portion |
Answer» C. it improves endurance strength |
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