Manufacturing And Production Technology
Lapping is an operation of

Sizing and finishing a small diameter hole
Smoothing and squaring the surface around a hole
Making a cone-shaped enlargement of the end of a hole
Producing a hole by removing metal along the circumference of a hollow cutting tool

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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.
Grinding at high speed results in the reduction of chip thickness and cutting forces per grit.
All of these
Aluminium oxide wheels are employed.

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