64) Which one of the following is used to hold the straight shank drill having diameter less than 12 mm ?

Sleeve

Socket

Drill chuck

Drill drift

Answer is:

Drill chuck

Explanation:

Drill chuck is used to hold the straight shank drill having diameter less than 12 mm.

Finish required

Material of tool (drill)

Material to be drilled

All the above

Answer is:

Material of the job

Material of the reamer

Diameter (size) of the reamer

Rigidity of the fixture

Answer is:

8.5 mm

9.0 mm

9.5 mm

10.0 mm

Answer is:

Width of job

Material of job

Material of tool

Operation to be performed

Answer is:

Explanation:

Width of job will not influence the selection of the cutting speed while performing operation on drilling machine.