Manufacturing And Production Technology
When the metal is removed by erosion caused by rapidly recurring spark discharges between the tool and work, the process is known as

None of these
Electrochemical machining
Electro-discharge machining
Ultrasonic machining

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Manufacturing And Production Technology
The lip clearance angle is the angle formed by the

Chisel edge and the lip as viewed from the end of a drill
None of the listed here
Leading edge of the land with a plane having the axis of the drill
Flank and a plane at right angles to the drill axis

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