Which of the following processes can be done using ECM? / » Unconventional Machine Process (UMP) solved MCQs / By admin Question: Which of the following processes can be done using ECM? A. die sinking B. profiling and contouring C. drilling and trepanning D. all of the mentioned Answer» d. all of the mentioned Note: The above multiple-choice question is for all general and Competitive Exams in India.