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 ultrasonic machining, the metal is removed by

Direct contact of tool with the work
Maintaining an electrolyte between the work and tool in a very small gap between the two
Using abrasive slurry between the tool and work
Erosion caused by rapidly recurring spark discharges between the tool and work

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