Which one of the following is not a factor that can potentia

Which one of the following is not a factor that can potentially influence the topography of a machined surface? Scallop marks that naturally arise from the relative rigid body motion between the workpiece and cutting insert Surface smearing resulting from built up edge chip formation Surface imprinting resulting from wear grooves in the tool flanks Surface pitting due to acid-metal reactions between the cutting fluid and machined workpiece surface Surface scars left over from entangled chips striking the machined surface Problem 7 Which one of the following statement is not true with regard to a stable machining process? When perturbed, the unwanted vibration between the cutting tool and workpiece surface will decrease exponentially Stable machining processes always leave chatter marks on the machined workpiece surface Stability is enhanced by increasing the dynamic stiffness of the closed loop machining system Stability can be enhanced by altering the spindle speed None of the above Which one of the following statements is not true with regard to built up edge (BUE) formation during machining? BUE formation is desired because it reduces the surface roughness of the machined surface and gives it a high lustrous appearance BUE formation is due to workpiece metal randomly welding to the cutting tool and fracturing off in the cut zone BUE formation is typically encountered during the machining of soft, ductile, metals at low cutting speeds BUE formation is more likely to occur when cutting fluid is not applied to the cut zone None of the above

Solution

Problem 6: alternative \'d\'

In any metal cutting operation its never been recomende to use a cutting fluid which will chemically react with the workpiece material.

Problem 7: alternative \'b\'

Stable machining process reduces the chater marks it is false statement to say stable machining always producess chatter marks. Chatter marks are mainly due to vibration present in machining operation and inappropriate operation.

Problem 8: alternative \'a\'

Formation of BUE has adverse effects upon the machining quality as formed BUE can break at any time and causes excessive local hardning and effectively affects the machined surface.