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

Electrochemical machining
Ultrasonic machining
None of these
Electro-discharge machining

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Manufacturing And Production Technology
The primary purpose of a sprue in a casting mould is to

Act as a reservoir for molten metal
Feed the casting at a rate consistent with the rate of solidification
Feed molten metal from the pouring basin to the gate
Help feed the casting until all solidification takes place

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Manufacturing And Production Technology
Which of the following statement is correct for orthogonal cutting system?

The cutting edge of the tool is perpendicular to the direction of tool travel
All of these
The chip flows over the tool face and the direction of the chip flow velocity is normal to the cutting edge
The cutting edge clears the width of the workpiece on either ends

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