Crater wear leads to? Mark as favorite Copy Link increase in cutting temperature weakening of tool friction and cutting forces all of these Check Answer
The tool may fail due to? Mark as favorite Copy Link cracking at the cutting edge due to thermal stresses chipping of the cutting edge plastic deformation of the cutting edge all of these Check Answer
In metal machining, the zone where the maximum heat is generated due to the plastic deformation of metal, is called? Mark as favorite Copy Link friction zone work-tool contact zone shear zone none of these Check Answer
The enlarging of an existing circular hole with a rotating single point tool is called? Mark as favorite Copy Link boring drilling reaming internal turning Check Answer
A better machinable metal is one which gives? Mark as favorite Copy Link lower chip-tool contact area and larger shear angle higher chip-tool contact area and smaller shear angle lower chip-tool contact area and smaller shear angle higher chip-tool contact area and larger shear angle Check Answer
The factor which affects the tool life is? Mark as favorite Copy Link tool geometry cutting speed feed rate all of these Check Answer
An important geometrical quantity in the cutting of metals which can be used as a criterion for machinability of metals is? Mark as favorite Copy Link cutting speed feed rate shear angle path of shear is large and chip is thin Check Answer
In machining metals, surface roughness is due to? Mark as favorite Copy Link feed marks or ridges left by the cutting tool fragment of built-up edge on the machined surface cutting tool vibrations all of these Check Answer
The swing diameter over the bed is……………he height of the centre measured from the bed of the lathe? Mark as favorite Copy Link equal to twice thrice one-half Check Answer
Which of the following statement is correct about nose radius? Mark as favorite Copy Link It improves tool life It improves the surface finish both (a) and (b) none of these Check Answer