GATE ME 2020 Set 1 — Question 54
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Manufacturing Processes → Machining & Machine Tools → Non-Traditional Machining
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Question
A steel part with surface area of is to be chrome coated through an electroplating process using chromium acid sulphate as an electrolyte. An increasing current is applied to the part according to the following current time relation:where, and . The part is submerged in the plating solution for a duration of for plating purpose. Assuming the cathode efficiency of chromium to be and the plating constant of chromium acid sulphate to be , the resulting coating thickness on the part surface is ______ (round off to one decimal place).
Correct answer
0 to 0
Solution
Note: The official answer key provides a range of 0 to 0, suggesting the question was either cancelled or had a specific interpretation leading to zero. However, the standard calculation is as follows:
1.Average current .
2.Total charge .
3.Volume of metal deposited .
4.Surface Area .
5.Thickness .
As per the official key, the answer is 0.Continue learning with Success Tracker
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