HomeEngineeringWhen a low carbon steel is heated upto upper critical temperature 12090. When a low carbon steel is heated upto upper critical temperatureBy Admin / September 13, 2025 there is no change in grain size the average grain size is a minimum the grain size increases very rapidly the grain size first i ✅ The correct answer is option B.
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