LQ3 CEMATEL REVIEWER PDF

Short Quiz 8: Metals 1. Identify the typical characteristics of metal. (3) 2. What is the term for the maximum stress in the stress-strain curve of metal? (1) 3. According to the NSCP, what is the value of the modulus of elasticity for steel in MPa? (1) 4. Define the term for a rock...

Short Quiz 8: Metals 1. Identify the typical characteristics of metal. (3) 2. What is the term for the maximum stress in the stress-strain curve of metal? (1) 3. According to the NSCP, what is the value of the modulus of elasticity for steel in MPa? (1) 4. Define the term for a rock containing sufficient minerals with metals for economic extraction. (1) 5. Name the ore classification from which iron can be extracted. (2) 6. What stage in tension testing indicates strength increase after yielding? (1) 7. What is the principal element of ferrous metals? (1) 8. True or False: The use of chemical reagents like carbon monoxide gas can refine metals. (1) 9. Identify processes used for extracting metal from ore. (2) 10. Which operation is not a main step in metal production? (1) 11. What causes the degrading result of metal oxidation? (1) 12. What is an alloy of iron and carbon? (1) 13. Define the property of metal that resists impact without permanent deformation. (1) 14. What is the stress that causes rupture at high temperatures over time? (1) 15. What term describes the progressive fracture of metal under repeated loading? (1) 16. Name the process of coating metal by hot-dipping it in zinc. (1) 17. True or False: The use of chemical reagents like carbon monoxide gas can refine materials. (1) 18. What property allows metal to resist scratches or surface cuts? (1) 19. Name the methods to prevent oxidation of metal. (4) 20. What is pyrometallurgy also known as? (1) 21. Define the property of metal to change shape under hammering. (1) 22. What is the modulus of the area under the elastic portion of the stress-strain curve of metal? (1) 23. What term is used for the non-commercial material associated with ore? (1) 24. Name the stress that leads to rupture over time and high temperature. (1) Short Quiz 9: Steel 1. True or False: Most alloy steel used in construction forms carbides with carbon. (1) 2. What is the carbon content range of medium carbon steel? (1) 3. Which steel has the lowest carbon content? (1) 4. Which impurity can be beneficial in small quantities but detrimental at larger amounts? (1) 5. On what property is the grade of steel reinforcing bars based? (1) 6. Name the two types of furnaces for primary steel production. (2) 7. What is the process of heating and cooling steel to achieve desired properties? (1) 8. Name the basic quenching media for steel. (3) 9. True or False: Cast iron can become malleable with special annealing treatment. (1) 10. True or False: Steel alloys can be made stronger and more corrosion-resistant for construction. (1) 11. Identify the most undesirable impurity in steel. (1) 12. What process removes impurities in molten iron by oxidation? (1) Short Quiz 10: Wood 1. What composite is made of veneers glued together? (1) 2. List advantages of seasoned lumber over green lumber. (3) 3. What is the typical size of plywood? (1) 4. Which statement about wood is false? (1) 5. What is the central core of a log composed of inactive cells for mechanical support? (1) 6. How many board feet are in 4 pieces of 2’’ x 4’’ x 16’? (1) 7. What chemical component of wood glues cells together? (1) 8. At what moisture content does wood shrinkage begin? (1) 9. Name the wood preservatives listed. (3) 10. What is the method of seasoning wood by heating to remove moisture? (1)  11. What is the term for wood rough sawn and cut to standard lengths? (1) 12. Which insects cause wood deterioration? (3) 13. Define the tree classification based on growth by adding concentric layers. (1) 14. What is the unit of measure for 1 ft x 1 ft x 1 in of wood? (1) 15. What is the continuous ring of reproductive tissue between the sapwood and bark? (1) 16. What is the size of lumber when it is first cut from the log? (1) 17. List one wood composite discussed in class. (1) 18. True or False: Plywood is a non-engineered wood product. (1) Long Quiz 3 1. What is the very slow flow of metal under sustained stress at high temperatures? (1) 2. In ASTM E8 testing, what force is applied to a metal specimen? (1) 3. What is the term for energy required to fracture a metal, measured from the stress-strain curve? (1) 4. What is the property of metal to undergo large deformation without fracture? (1) 5. Which test determines the toughness of metal? (1) 6. What is the term for the maximum stress on the stress-strain curve of metal? (1) 7. What is an I-shaped steel section with wide flanges called? (1) 8. What are the waste and impurities floating on molten steel called? (1) 9. What main factor affects the properties of steel? (1) 10. What is the carbon content of medium carbon steel? (1) 11. What is the yield strength of an A36 wide flange steel? (1) 12. Which steel type is a high-carbon steel? (1) 13. What chemical component of wood acts as a bonding agent? (1) 14. True or False: Lumber is produced by quarter sawing. (1) 15. True or False: Coco lumber comes from an exogenous tree. (1) 16. What property of wood affects nail-holding power? (1) 17. True or False: The thermal expansion coefficient parallel to the grain is higher than perpendicular. (1) 18. Which property of wood affects strength and shrinkage? (1) 19. Calculate the density of wood with a specific gravity of 0.57 and 16% moisture content in kg/m³. (1) 20. What term describes cracks on lumber going through its thickness, usually at the ends? (1) 21. Define cracks between and parallel to annual rings of lumber. (1) 22. Name the three principal axes of wood. (3) 23. List defects of lumber. (4) 24. What is the warping of lumber with convex or concave edges longitudinally? (1) 25. True or False: Wood is isotropic and orthotropic. (1) 26. What percentage stress grade is used for visual stress grading of lumber? (1) 27. On what allowable stress are MSG group labels based? (1) 28. What is the term for low-carbon iron cast into bars for further processing? (1) 29. What is the most abundant metal on Earth? (1) 30. How many electrodes are used in an electric arc furnace? (1) 31. Which material has the lowest carbon content among those listed? (1) ANSWERS Short Quiz 9: Steel Short Quiz 8: Metals 1. b) False 1. a) Ductile, c) Malleable, d) Fusible 2. b) Medium carbon steel 2. a) Ultimate strength 3. d) Mild steel 3. 200,000 MPa 4. Manganese 4. Ore 5. b) Yield strength 5. b) Oxides, Carbonates 6. Basic oxygen, Electric arc 6. b) Strain hardening 7. b) Annealing 7. b) Iron 8. a) Oil, d) Water, f) Brine 8. a) True 9. a) True 9. a) Smelting, b) Leaching 10. a) True 10. a) Galvanizing 11. Phosphorus 11. Corrosion 12. Bessemer process 12. Steel 13. Toughness Short Quiz 10: Wood 14. a) Stress Rupture 1. Plywood 15. Fatigue 2. b) Reduction of weight 16. Galvanizing 3. a) 4’ x 8’ 17. a) True 4. e) Mechanical properties do not vary 18. Hardness between species 19. a) Concrete encasing, b) Galvanizing, d) 5. Heartwood Painting the metal, asphalt coating 6. 43 20. a) Smelting 7. Lignin 21. Malleable 8. e) Approximately 30% moisture content 22. Resilience 9. a) Chromated Copper Arsenate 23. Gangue b) Coal-Tar Creosote e) Pentachlorophenol 24. b) Stress rupture  10. Kiln-drying 12. d) Tendons for precast concrete 11. Lumber 13. d) Lignin 12. b) Carpenter ants 14. b) False d) Termite f) Powder post beetles 15. b) False 13. Exogenous 16. Moisture content 14. d) Board foot 17. a) True 15. Cambium 18. c) All that are listed here 16. d) Nominal size 19. 611 kg/m³ 17. Plywood (or any valid composite discussed) 20. b) Split 21. Shakes 18. b) False 22. b) Longitudinal axis c) Radial axis f) Tangential axis Long Quiz 3 23. a) Decay 1. b) Creep c) Bow d) Checks 2. e) Tension e) Honeycomb 3. e) Modulus of toughness 24. a) Crook 4. b) Ductility 25. b) False 5. b) Charpy test 26. a) 50% stress grade 6. e) Ultimate strength 27. a) Bending 7. c) W-section 28. b) Pig iron 8. Slag 29. d) Aluminum 9. b) Carbon content 30. d) 3 10. a) Medium carbon steel 31. b) Mild steel 11. a) 345 MPa