Manufacturing And Production Technology
A taper tap has

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

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Manufacturing And Production Technology
Jigs are used

To check the accuracy of workpiece
For holding and guiding the tool in drilling, reaming or tapping operations
None of these
For holding the work in milling, grinding, planing or turning operations

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