question_answer

Consider the following statements regarding grinding of high carbon steel:

1. Grinding at high speed results in the reduction of chip thickness and cutting forces per grit

2. Aluminium oxide wheels are employed

3. The grinding wheel has to be of open structure.

Of these statements:

A) 1, 2 and 3 are correct

B) 1 and 2 are correct

C) 1 and 3 are correct

D) 2 and 3 are correct