Manufacturing And Production Technology
In machining metals, surface roughness is due to

Feed marks or ridges left by the cutting tool
All of these
Cutting tool vibrations
Fragment of built-up edge on the machined surface

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Manufacturing And Production Technology
Which of the following statement is correct for oblique cutting system?

Frequently, more than one cutting edges are in action
The chip flows on the tool face at an angle less than 90° with the normal on the cutting edge
All of these
The cutting edge is inclined at an angle less than 90° with the normal to the velocity of the tool

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