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GATE Mechanical Engineering (ME) 2016 Shift 2 Solved Paper
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Question : 62
Total: 65
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.
Your Answer:
Validate
Solution:
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