Between which values does the frontal gap’s surface roughness vary?(a) 0.02 to 0.13 µm(b) 0.30 to 1.90 µm(c) 1.93 to 2.64 µm(d) 2.73 to 4.26 µmThis question was addressed to me in an interview for job.I want to ask this question from ECM-Process Characteristics topic in chapter Electrochemical Processes of Advanced Machining

Between which values does the frontal gap’s surface roughness vary?(

1.	Between which values does the frontal gap’s surface roughness vary?(a) 0.02 to 0.13 µm(b) 0.30 to 1.90 µm(c) 1.93 to 2.64 µm(d) 2.73 to 4.26 µmThis question was addressed to me in an interview for job.I want to ask this question from ECM-Process Characteristics topic in chapter Electrochemical Processes of Advanced Machining
Answer» The correct ANSWER is (b) 0.30 to 1.90 µm The explanation: Surface roughness VARIES between 0.30 to 1.9 µm for FRONTAL gap AREA.

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