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Surface roughness depends on current density, which is affected by which of the following?

Surface roughness depends on current density, which is affected by which of the following? Correct Answer All of the mentioned

Roughness depend on current density, which is affected by tool feed rate, gap voltage, work material, pH number, temperature, conductivity and pressure.

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The figure below shows a symbolic representation of the surface texture in a perpendicular lay orientation with indicative values (I through VI) marking the various specifications whose definitions are listed below. P: Maximum Waviness Height (mm); Q: Maximum Roughness Height (mm); R: Minimum Roughness Height (mm); S: Maximum Waviness Width (mm); T: Maximum Roughness Width (mm); U: Roughness Width Cutoff (mm); The correct match between the specifications and the symbols (I to VI) is
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