A direct indexing operation is done using an indexing attachment with an index plate of 24 slots. Which one of the following set of divisions cannot be milled on the workpiece ?

24, 12

8, 6

7, 5

3, 2

8 Degree

12 Degree

20 Degree

28 Degree

The cylindrical cutter set on a mandrel will be in between centres

The cylindrical cutter set on a mandrel will be in between chuck and centre

The cylindrical cutter set on a mandrel will be only in chuck

The cylindrical cutter set on a mandrel will be within chuck and steady rest

24

30

38

42

No slipping of teeth due to penetration

Downward vertical cutting force

No backlash on the table spindle

Thick chips developed at the point of penetration