Manufacturing And Production Technology
A bottoming tap has

Full threads for the whole of its length
Its end tapered for about eight or ten threads
None of these
Its end tapered for about three or four threads

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

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