Mechanical Engineering : Engineering Materials QUESTIONS AND ANSWERS :: part2 : 16 to 20
Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
16.White cast iron contains carbon in the form of |
| free carbon |
| graphite |
| cementite |
| white carbon |
| ferrite. |
17.In malleable iron, carbon is present in the form of |
| cementite |
| free carbon |
| flakes |
| spheroids |
| nodular aggregates of graphite. |
18.In nodular iron, graphite is in the form of |
| cementite |
| free carbon |
| lakes |
| spheroids |
| nodular aggregates of graphite. |
19.The percentage of carbon in pig iron varies from |
| 0.1 to 1.2% |
| 1.5 to 2.5% |
| 2.5 to 4% |
| 4 to 4.5% |
| 4.5 to 6.3%. |
20.The unique property of cast iron is its high |
| malleability |
| ductility |
| surface finish |
| damping characteristics |
| hardness. |
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