Mechanical Engineering > GATE 2016 SET-2 > Unconventional Machining
The surface irregularities of electrodes used in an electrochemical machining (ECM) process are 3 μm and 6 μm 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.
Correct : 51.5
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