In an ECM with a pure iron work piece, MRR of 5 cm³/min is required. What will be the required current? [gram atomic weight of iron = 56g, valency = 2, density of iron = 7.8g/cm³ and F = 96500 coulomb]

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  1. 224 amp
  2. 2.24 amp
  3. 2240 amp
  4. 22.4 amp

Answer (Detailed Solution Below)

Option 3 : 2240 amp
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Concept:

The required current in Electrochemical Machining (ECM) is given by:

Given:

Calculation:

 

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