HomeEngineeringThe operation of making a cone-shaped enlargement of the end of a hole is known as 11616. The operation of making a cone-shaped enlargement of the end of a hole is known asBy Admin / September 8, 2025 counter-sinking counter-boring trepanning spot facing ✅ The correct answer is option A.
1. A fire tube boiler is limited to a maximum steam pressure of about __________ kg/cm². Leave a Comment / Basic Chemical Engineering MCQs, Chemical Engineering, Engineering / By Admin
2. Transformer cores are normally made from Leave a Comment / Basic Chemical Engineering MCQs, Chemical Engineering, Engineering / By Admin