Manufacturing And Production Technology
In which of the following machine, the work is usually rotated while the drill is fed into work?

Deep hole drilling machine
Gang drilling machine
Radial drilling machine
Sensitive drilling machine

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Manufacturing And Production Technology
In determining the various forces on the chip, Merchant assumed that the

Only continuous chip without built-up-edge is produced
All of these
Cutting velocity remains constant
Cutting edge of the tool is sharp and it does not make any flank contact with the workpiece

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