Mec 322 cards Exam Questions And Answers Practice Questions with Solutions Newest | Already Graded A+

Mec 322 cards Exam Questions And Answers Practice Questions with Solutions Newest | Already Graded A+ Machining - Answer- Material removal by shear deformation Cutting Speed - Answer- Primary motion in machining Feed - Answer- Secondary motion controlling material removal Depth of Cut - Answer- Thickness of material removed in one pass Material Removal Rate (RMR) - Answer- v × f × d Turning - Answer- Single-point cutting operation with rotating workpiece Milling - Answer- Multi-tooth rotating cutting operation Drilling - Answer- Process where tool rotates to create holes Boring - Answer- Enlarging an existing hole Reaming - Answer- Finishing a hole to tighter tolerance Rake Angle - Answer- Inclination of tool affecting chip flow and forces High Rake Angle - Answer- Reduces cutting force and increases shear angle Shear Plane - Answer- Region where material shears to form chip Shear Stress - Answer- Stress acting along shear plane Continuous Chip - Answer- Forms in ductile materials Discontinuous Chip - Answer- Forms in brittle materials Serrated Chip - Answer- Forms in semi-ductile materials Built-Up Edge (BUE) - Answer- Material buildup on tool at low speeds Reduce BUE - Answer- Increase speed, increase rake angle, use cutting fluid Surface Finish - Answer- Improved by high speed and low feed Cutting Force (Fc) - Answer- Main force acting during cutting Thrust Force (Ft) - Answer- Force perpendicular to cutting direction Power in Machining - Answer- P = Fc × V Tool Life - Answer- Duration a tool performs effectively Taylor Tool Life Equation - Answer- vT^n = C Effect of Speed on Tool Life - Answer- Increasing speed decreases tool life Flank Wear - Answer- Wear on tool flank due to abrasion Crater Wear - Answer- Wear on rake face due to chip flow Best Tool Failure Mode - Answer- Gradual wear Grinding - Answer- Abrasive finishing process Abrasive Process - Answer- Material removal using abrasive particles Aluminum Oxide - Answer- Used for grinding steels Silicon Carbide - Answer- Used for brittle materials Diamond - Answer- Not suitable for steel Grinding Wheel Dressing - Answer- Restores shape and exposes new grains Small Grain Size - Answer- Produces better surface finish Large Grain Size - Answer- Produces rough finish Grinding Problems - Answer- Overheating, residual stress, surface cracks G-Ratio - Answer- Volume of material removed / wheel wear