28) The angle of drill grinding gauge is

59 Degree

118 Degree

121 Degree

124 Degree

Answer is:

121 Degree

Explanation:

The angle of drill grinding gauge is 121 Degree.

MT-1 taper

MT-2 taper

MT-3 taper

MT-4 taper

Answer is:

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:

Bench drilling machine

Pillar drilling machine

Radial drilling machine

Ratchet drilling machine

Answer is:

Explanation:

Where electricity is not available, Ratchet drilling machine is used for drilling holes.