__In electro-discharge machining, dielectric is used to__

1.	__In electro-discharge machining, dielectric is used to__
A.	Help in the movement of the sparks
B.	Control the spark discharges
C.	Act as coolant
D.	All of these
Answer» E.

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__In electro-discharge machining, dielectric is used to__

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In electro-discharge machining, dielectric is used to