Manufacturing And Production Technology
Jigs are used

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

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Manufacturing And Production Technology
The effect of setting a boring tool above center height leads to

Decrease in the effective rake angle and an increase in the effective clearance angle
Decrease in both effective rake angle and effective clearance angle
Increase in both effective rake angle and effective clearance angle
Increase in the effective rake angle and a decrease in the effective clearance angle

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Manufacturing And Production Technology
The chamfering is an operation of

Enlarging the end of a hole cylindrically
Reducing the diameter of a workpiece over a very narrow surface
Embossing a diamond shaped pattern on the surface of a workpiece
Beveling the extreme end of a workpiece

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