Engineering Materials Past Paper PDF - 2117 - Jun 2023

## ENGINEERING MATERIALS **Code No.: 2117** **[Maximum Marks: 50** **Time: 2:30 Hours]** **NOTES:** - Attempt all questions. Attempt any two parts of each question. - Students are advised to specially check the Numerical Data of question paper in both versions. If there is any difference in Hindi...

## ENGINEERING MATERIALS **Code No.: 2117** **[Maximum Marks: 50** **Time: 2:30 Hours]** **NOTES:** - Attempt all questions. Attempt any two parts of each question. - Students are advised to specially check the Numerical Data of question paper in both versions. If there is any difference in Hindi Translation of any question, the students should answer the question according to the English version. - Use of Pager and Mobile Phone by the students is not allowed. **Q1) Answer any two parts of the following:** [2×5=10] a) Define the different mechanical properties of metals. b) Describe the stress-strain diagram for mild steel. c) Write the properties and uses of Zinc. Also write its alloys with their uses. **Q2) Answer any two parts of the following:** [2×5=10] a) What do you mean by semi-conducting materials? b) Define the heat-treatment processes. c) Differentiate between natural and synthetic rubber. **Q3) Answer any two parts of the following:** [2×5=10] a) Describe the Refractory materials. b) Define transformation cooling curve. c) Differentiate between Destructive and Non-destructive test of material. **Q4) Answer any two parts of the following:** [2×5=10] a) Describe the structure of solids. b) Define the food grade plastic. c) Explain liquid penetration and visual testing. **Q5) Write short notes on any four:** [4×2½ = 10] a) Atomic packing factor. b) Normalising. c) Care Hardening. d) Eddy-current test (NDE). e) Properties of plain carbon steel. f) Refractory bricks.