Mechanical Engineering : Engineering Materials QUESTIONS AND ANSWERS :: part7 : 1 to 5
Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
1.Free cutting steels |
| are used where ease in machining is the criterion |
| contain carbon in free form |
| require least cutting force |
| do not exist |
| can be cut freely even under adverse conditions. |
2.White metal contains |
| 63 to 67% nickel and 30% copper |
| 88% copper and 10% tin and rest zinc |
| alloy of tin, lead and cadmium |
| silver and chromium |
| malleable cast iron and silver. |
3.Which of the following alloys does not have copper as one of the constituents |
| delta metal |
| monel metal |
| constantan |
| nichrome |
| silicon bronze. |
4.Addition of manganese to aluminium results in |
| improvement of casting charac�teristics |
| improvement of corrosion resistance |
| one of the best known age and precipitation-hardening systems |
| improving machinability |
| none of the above. |
5.Which of the following alloys does not contain tin |
| white metal |
| solder admiralty |
| fusible metal |
| phosphor bronze |
| gun metal. |
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