Question

The tension testing machine (crosshead) should not cross a speed of ___________ inch per inch of the gage length per minute until the yield point.

(a) 1/11

(b) 2

(c) 1/16

(d) 2/5

The question was asked in a job interview.

The doubt is from Aircraft Materials in chapter Testing Aircraft Materials of Aerospace Materials & Processes

Answer 1

Right choice is (c) 1/16

To elaborate: The crosshead of the tension testing machine has a certain advisable limit in speed it has to be operated up to. It is different until the yield point and after yield point till rupture. Until yield point it is 1/16 inch, yield point to rupture it is 1/2 inch. (Inch per inch)