Manufacturing And Production Technology
A taper tap has

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

All of these
Aluminium oxide wheels are employed.
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.

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Manufacturing And Production Technology
In a shaper, the length of stroke is increased by

Increasing the length of the arm
Decreasing the centre distance of bull gear and crank pin
Decreasing the length of the slot in the slotted lever
Increasing the centre distance of bull gear and crank pin

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