The surface irregularities of electrodes used in an electrochemical machining (ECM) process are 3μm and 6μm as shown in the figure. If the work - piece is of pure iron and 12V DC is applied between the electrodes, the largest feed rate is _______ mm/min. Conductivity of the electrolyte 0.02 ohm -1 mm -1 Over-potential voltage 1.5 V Density of iron 7860 kg/m 3 Atomic weight of iron 55.85 gm Assume the iron to be dissolved as Fe +2 and the Faraday constant to be 96500 Coulomb.

GATE Mechanical Engineering (ME) 2016 Shift 2 Solved Paper

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The surface irregularities of electrodes used in an electrochemical machining (ECM) process are 3μm and 6μm as shown in the figure. If the work - piece is of pure iron and 12V DC is applied between the electrodes, the largest feed rate is _______ mm/min.

Conductivity of the electrolyte	0.02 ohm^-1mm^-1
Over-potential voltage	1.5 V
Density of iron	7860 kg/m³
Atomic weight of iron	55.85 gm

Assume the iron to be dissolved as Fe⁺² and the Faraday constant to be 96500 Coulomb.

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