Question

In electrodischarge machining (EDM), if the thermal conductivity of tool is high and the specific heat of work piece is low, then the tool wear rate and material removal rate are expected to be respectively
1. High and high
2. Low and low
3. High and low
4. low and high

Answer 1

Correct Answer - Option 4 : low and high

Material Removal Rate  α  Thermal Conductivity of tool

Here Thermal conductivity is high, Hence MRR will be high and tool wear will be low.