1.

The proof stress of a material of 3 inches gage length is the highest stress it can withstand without a permanent set of above ___________ inch.(a) 0.0003(b) 0.21(c) 0.05(d) 0.004I had been asked this question in an interview.Question is taken from Aircraft Materials topic in section Testing Aircraft Materials of Aerospace Materials & Processes

Answer»

The correct answer is (a) 0.0003

Best explanation: For a LENGTH of one inch, the PERMANENT SET of over 0.0001 inch withstanding is proof stress. For 3 INCHES length, it will be –

0.0001×3 = 0.0003 inches.

Hence, it is 0.0003 inches.



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