78) In case of a single cut files, the teeth are cut on the file face at an angle of

45 Degree to the centre line of the file

60 Degree to the centre line of the file

75 Degree to the centre line of the file

80 Degree to the centre line of the file

Answer is:

60 Degree to the centre line of the file

Parallel reamer

Adjustable reamer

Expansion reamer

Chucking reamer

Answer is:

Explanation:

A short reamer with an axial hole used with an arbor or mandrel is called as chucking reamer.

H.S.S.

Carbide steel

Diamond

Cast steel

Answer is:

Eye level

Shoulder level

Elbow level

Arm level

Answer is:

The tap has coarse threads

Too much downward pressure is applied

Cutting oil is not used

Smaller tap drill size is used

Answer is: