Fatigue Failure Exam question

[thien2002]

Another 2 certification exam questions would be this one:
1. A fatigue failure is characteristic by the appearance of the fracture surface. It woould be:
a. Rough and torn
b. Cheveron - like
c. Smooth
d. Non of the above

2. What constituent is needed in a coating of an electrode to prevent the formation of porosity in welding of rimming?
a. Iron powder
b. calcium fluoride
c. Silicon
d. Calcium carbonate

 

[edellison]

1 i beleive is B, off the top of my head