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

The grinding wheel has to be of open structure.
All of these
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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Manufacturing And Production Technology
Threading is an operation of

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

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