Manufacturing And Production Technology
Threading is an operation of

Sizing and finishing a small diameter hole
Cutting helical grooves on the external cylindrical surface
Producing a hole by removing metal along the circumference of a hollow cutting tool
Smoothing and squaring the surface around a hole

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Manufacturing And Production Technology
Which of the following statement is correct regarding grinding of high carbon steel?

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

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