131. The stroke of a shaping machine is 250 mm. It makes 30 double strokes per minute. The overall average speed of operation is
132. A feed gear box for a screw cutting lathe is designed on the basis of
133. A _________ grinding wheel is used to grind soft materials.
134. Ceramic tools are fixed to tool body by
135. In electrochemical machining, the gap between the tool and work is kept as
136. The hardness of a grinding wheel is determined by the
137. The floating position of the holding fixture in a rotary transfer device is used to
138. The cutting angle of a flat drill varies from
139. The relief or clearance at the cutting edge of a flat drill varies from
140. Low helix angle drills are preferred for drilling holes in
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