Question

If a wire that has a diameter of less than 0.033 inches has to undergo a torsion test, the length of the specimen being used must be _________ inches.

(a) 10

(b) 100

(c) 30

(d) 8

I got this question during an interview.

My query is from Aircraft Materials in portion Testing Aircraft Materials of Aerospace Materials & Processes

Answer 1

Right option is (c) 30

To elaborate: The length required for a specimen of diameter less than 0.033 inches in the torsion test is 30 inches. The length required for the wire being used in this experiment depends on the diameter of the specimen.