81. What is the method of brazing used to join relatively small assemblies made from materials that either do not oxidize at the brazing temperature or can be protected from oxidation with a flux?
82. Hardness of steel greatly improves with
83. Side relief angle of a single point tool is the angle
84. Side rake angle of a single point cutting tool is the angle
85. Which of the following statement is correct in regard to centreless grinding?
86. What is the type of joining process called, where the parts to be welded are kept in contact and rotated relative to each other and axial pressure is applied when the desired temperature is obtained?
87. The ratio between two consecutive spindle speeds for a six-speed drilling machine using drills of diameter 6.25 to 25 mm size and at a cutting velocity of 18 m/min is
88. The negative rake is usually provided on
89. The grinding wheel speed (surface speed in m/min) usually varies from
90. What type of fusion welding process is used for welding sheet metals of all engineering metals (except Cu, Ag) in automobile and air craft industries, pipe and tubing production?
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