Mechanical Engineering : Engineering Materials QUESTIONS AND ANSWERS :: part5 : 21 to 25
Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
21.Nodular iron has |
| high maehinability |
| low melting point |
| high tensile strength |
| good fluidity |
| all of the above. |
22.Blast furnace produces following by reduction of iron ore |
| cast iron |
| pig iron |
| wrought iron |
| malleable iron |
| white iron. |
23.Cupola produces following material |
| cast iron |
| pig iron |
| rought iron |
| malleable iron |
| white iron. |
24.Tensile strength of steel can be safely in-creased by |
| adding carbon upto 2.8% |
| adding carbon upto 6.3% |
| adding carbon upto 0.83% |
| adding small quantities of copper |
| adding copper and carbon. |
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