Home/Volume-3/Engineering Materials: Metals Volume-3 Engineering Materials: Metals Admin03/08/20240 10 Less than a minute Report a question What's wrong with this question? You cannot submit an empty report. Please add some details. 0% Engineering Materials: Metals Engineering Materials: Metals 1 / 13 1. The percentage of silver content in the GERMAN SILVER is? 10% 5% 2.50% 0% 2 / 13 2. The elements in the WHITE METAL are? Tin ; Antimony ; Lead ; Copper Copper ; tin ; chromium Copper ; zinc ; Tin Tungsten and chromium 3 / 13 3. The elements in the GUNMETAL are? Copper and zinc Copper ; tin and zinc Copper and tungsten and nickel None 4 / 13 4. The steel rod for wire making becomes homogeneous by the process of? Patenting or normalising Forging Pickling Annealing 5 / 13 5. Periodical heat treatment is not necessary if the chains are made of mild steel with a manganese percentage of? 0.06 0.5 1 1.5 6 / 13 6. The object of normalising is? To remove internal strains To reduce the size of crystal grains To improve the strength None 7 / 13 7. In stainless steel the chromium percentage is? 10 to 15 % 18 to 20 % 25 to 30 % Less than 10% 8 / 13 8. The process of heating the metal to normalising temperature and then allowing it to cool slowly and uniformly not in air is called? Forging Normalising Annealing Hardening 9 / 13 9. The process of heating steel gradually uniformly to a temperature higher than the critical temperature and then cooled rapidly by quenching water is called? Forging Normalising Annealing Hardening 10 / 13 10. Rods are dipped in diluted H2SO4 or HCL to remove scales is called? Patenting Forging Pickling Normalising 11 / 13 11. The objective of annealing is? To remove internal strains To reduce the size of crystal grains To improve the strength None 12 / 13 12. The process of heating steel to a temperature slightly above critical temperature and allowing it to cool naturally in air is called? Forging Normalising Annealing Hardening 13 / 13 13. The steel is unweldable if it contains carbon content? Less than 0.5 % 0.5 to 1 % 1 to 1.2 % More than 1.25 % Your score is The average score is 61% LinkedIn Facebook Twitter 0% Admin03/08/20240 10 Less than a minute
