GATE ME · 2022 · ME
Question 33: Machining and Machine Tool Operations
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Question 33
MENAT1 markNeeds review
Electrochemical machining operations are performed with tungsten as the tool, and copper and aluminum as two different workpiece materials. Properties of copper and aluminum are given in the table below.
Material | Atomic mass (amu) | Valency | Density (g/cm ) |
|---|---|---|---|
Copper | 63 | 2 | 9 |
Aluminum | 27 | 3 | 2.7 |
Ignore overpotentials, and assume that current efficiency is 100% for both the workpiece materials. Under identical conditions, if the material removal rate (MRR) of copper is 100 mg/s, the MRR of aluminum will be ______________ mg/s (round-off to two decimal places).
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2022ME
GATE ME 2022 · Paper 1
Mechanical Engineering · Original paper archive
- Section
- Mechanical Engineering
- Question type
- Numerical answer (NAT)
- Marks
- 1 mark
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