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 regarding grinding of high carbon steel?

All of these
Grinding at high speed results in the reduction of chip thickness and cutting forces per grit.
The grinding wheel has to be of open structure.
Aluminium oxide wheels are employed.

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