Multiple choice

A zigzag cavity in a block of high strength alloy is to be finish machined. This can be carried out by using

  1. electric discharge machining

  2. electro-chemical machining

  3. laser beam machining

  4. abrasive flow machining
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

$\text{In ECM, the principal of electrolysis used to remove metal from the workpiece.} \\ \text{The ECM method has also been developed for machining new hard and tough materials(for rocket and aircraft industry) and also hard refractory materials.} $

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