Which among the following is a non-positive cam ?

Cylindrical cam

Grooved plate cam

Plate cam

None of the above

6/1

5/1

4/1

3/1

15 Degree 6'

14 Degree 12'

13 Degree 57'

12 Degree 24'

30 Degree on either side

30 Degree in one side

45 Degree on either side

60 Degree in one side

Large size face milling cutters

Shell end mill and similar cutters

Drills, reamers, chucks etc.

None of the above