Question

When machining Ti, in Nacl electrolyte, what values of current efficiencies are obtained?

(a) 10 – 20 %

(b) 20 – 30 %

(c) 30 – 50 %

(d) 50 – 80 %

I had been asked this question in an internship interview.

Question is from ECM-Process Characteristics in division Electrochemical Processes of Advanced Machining

Answer 1

Right answer is (a) 10 – 20 %

For explanation I would say: While machining Ti using NaCl electrolyte, current efficiencies of 10 – 20 percent are obtained.