Manufacturing And Production Technology
In orthogonal turning of a low carbon steel bar of diameter 150 mm with uncoated carbide tool, the cutting velocity is 90 m/min. The feed is 0.24 mm/rev and the depth of cut is 2 mm. The chip thickness obtained is 0.48 mm. If the orthogonal rake angle is zero and the principle cutting edge angle is 90⁰, the shear angle in degree is

26.56
20.56
36.56
30.56

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Manufacturing And Production Technology
A jig is defined as a device which

Is used to check the accuracy of workpiece
All of these
Holds and locates a workpiece during an inspection or for a manufacturing operation
Holds and locates a workpiece and guides and controls one or more cutting tools

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Manufacturing And Production Technology
Which of the following statement is correct in regard to centreless grinding?

It requires no holding device for the work
It is a continuous process and adopted for production work
The workpiece is supported throughout its entire length as grinding takes place
All of these

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