[Solved] What are the surface roughness values obtained while machining spherical surfaces using Electro discharge machining?

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Q.	What are the surface roughness values obtained while machining spherical surfaces using Electro discharge machining?
A.	<0.1 µm
B.	<0.3 µm
C.	<0.5 µm
D.	<0.7 µm
Answer» A. <0.1 µm
Explanation: the surface roughness values obtained while machining of spherical surfaces are <0.1 µm in electro discharge machining.

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