Manufacturing And Production Technology
Fixtures are used

For holding and guiding the tool in drilling, reaming or tapping operations
None of these
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
In a CNC program block, N002 GO2 G91 X40 Z40......, GO2 and G91 refer to

Circular interpolation in counter clockwise direction and incremental dimension
Circular interpolation in clockwise direction and absolute dimension
Circular interpolation in counter clockwise direction and absolute dimension
Circular interpolation in clockwise direction and incremental dimension

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Manufacturing And Production Technology
In centreless grinding, work place centre will be

Below the line joining the two wheel centres
Above the line joining the two wheel centres
At the intersection of the line joining the wheel centres with the work place plane
On the line joining the two wheel centres

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