Gears essentially allow between teeth so high forces can be

Gears essentially allow between teeth so high forces can be transmitted while still undergoing essentially rolling contact. Positive engagement Interference fit Frictional engagement A and B in structural steels that behave in a completely ductile manner during ordinary lab strength tests is a big concern for Engineers and Metallurgists. Plastic failure. Stress concentration. Brittle failure. All of the above.

Solution

Answers:

1. A

2.A