Q.

The absolute minimum inner corner radius is            

A. the wire radius minus the sparking gap width
B. the sparking gap width minus the wire radius
C. the wire radius plus the sparking gap width
D. double of the wire radius
Answer» C. the wire radius plus the sparking gap width
Explanation: the absolute minimum inner corner radius is the wire radius added with the sparking gap width. therefore during machining, the shapes produced have larger dimensions as compared to the shapes mentioned in the program.
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