Midterm Exam MatScie PDF

1. The mechanical working of metal using impact blows a) forging b) peening c) drawing d) seaming e) flanging 2. Process of cutting sheet metal to size out of a larger stock. a) trimming b) shearing c) cutting d) blanking e) all 3. Test being conduct...

1. The mechanical working of metal using impact blows a) forging b) peening c) drawing d) seaming e) flanging 2. Process of cutting sheet metal to size out of a larger stock. a) trimming b) shearing c) cutting d) blanking e) all 3. Test being conducted such that permanent expansion shall not exceed 10% of the total expansion under the test pressure. a) hydrostatic pressure b) expansion c) volumetric d) water capacity e) none 4. Controlled heating and cooling of metal to alter physical and mechanical properties without altering shape a) oil treatment b) quenching c) heat treatment d) relieving e) none 5. A process to determine the actual yield strength and ultimate strength of the cylinder. a) pressure test b) bursting c) hydraulic test d) capacity test e) none 6.Cleaning of metal by high velocity jet of abrasive material. a) grinding b) milling c) shooting d) blasting e) none 7. Shallow forming operation involving no substantial change in thickness of the metal. a) Blanking b) Stamping c) Marking d) piercing e) none 8. Welding process that uses an aluminum alloy wire as combined electrode and filter material. a) MIG Process b) Electric Arc c) Submerged Arc d) TIG e) EGW 9. Process of rolling over the sharp edge of a drawn part. a) bending b) curling. c) rolling d) forming e) none 10. Process of cutting internal features (holes or slots) in sheet metal stock. a) drawing b) blanking c) boring d) piercing e) none 11. A test to ensure maximum adhesion of paint. a) paint test b) impact test c) thickness test d) chipping test e) brinnel test 12. Application of paint by air spraying. a) painting b) coating c) spray painting d) top coating e) powder coating 13. Instrument used for determining thickness of dry paint. a) filler gauge b) gauge c) electronic thickness gauge d) gauging eqp’t. e) sounding gauge 14. Is a forming process wherein blank sheet metal is formed into a cup with the use of a die.. a) piercing b) drawing c) punching d) trimming e) none (deep drawing) 15. Process of producing smaller cross sectional area, most often used in production of products that has necks like LPG. a) re-sizing b) reducing c) necking d) crimping e) none 16. Process of putting something that is visible for the purpose of specifying something. a) labeling b) tagging c) hatching d) marking e) none 17. An arc welding process that uses an arc between a continuous filler metal electrode and the weld pool. a) CAW b) SMAW c) FCAW d) GMAW e) TIG 18.Process wherein the cylinder are filled with air and then submerged in water with soap suds solution. a) air charging b) hydrostatic test c) leakage testing d) capacity testing e) none 19. A process wherein the newly painted cylinders are air heated in an oven. a) oven drying b) drying c) air drying d) baking e) none 20. All moisture, loose rust, scale, shot and other foreign matters shall be completely removed from the interior of each cylinders by the use of a vacuum cleaner a) cleaning b) vacuum c) exhausting d) washing e) none 21. An arc welding process that uses an arc between a carbon electrode and the weld pool a) CAW b) SMAW c) FCAW d) GMAW e) MIG 22. A gas such as argon, helium, nitrogen or reactive gas, which is employed to exclude oxygen from the root side (opposite from the welding side) of weld joints pool. a) blanketing gas b) barrier gas c) backing gas d) inert gas e) cover gas 23. An arc welding process that uses an arc or arcs between a bare metal electrode or electrodes and the weld pool a) SAW b) SMAW c) CAW d) GTAW e) MIG 24. A part of the welding circuit through which current flows between the electrode holder and the arc a) Holder b) Electric wire c) Electrode d) Rod e) welding rod 25. Non–metallic solid material entrapped in weld metal or between metal and base metal a) entrapment b) inert trapping c) defects d) slagging e) slag inclusion 26. Molding defects caused by not aligning the mold correctly a) flash b) inclusion c) gas pockets d) mold shift e) short casting 27. The interface that separates the cope and drag halves of a mold, flask, or pattern and also the halves of a core in some core-making machines. A) facing surface b) parting line c) wires d) gates e) flask 28. The box that contains the molding aggregate is the a) pattern b) flask c) cope d) drag e) cubical box 29. A device that knead, rolls, and stirs the sand. a) Roller b) stirrer c) muller d) puller e) hammer 30. The third segment of the flask is called a) brisk b) plastic c) cheek d) metal e) cope 31. A system that serves to deliver the molten metal to all sections of the mold cavity. a) storage b) delivery c) gating system d) entrance system e) riser 32. Specially prepared molding sand mixture used in the mold adjacent to the pattern to produce a smooth casting surface. a) dry sand b) green sand c) facing sand d) loam e) skin-dried sand 33. Metal receptacle frequently lined with refractories used for transporting and pouring molten metals. a) ladle b) lining c) crucible d) mold clamp e) spruce 34. Compression tests are the most common, although tension, shear, and transverse tests are sometimes used. a) permeability test b) mold and core hardness test c) sand strength test d) fineness test e) clay content test 35. Defined as “any projection of the sand into the mold”. a) pattern b) print c) cavity d) core e) infiltration 36. The taper on the vertical walls of the casting which is necessary to extract the pattern from the mold without disturbing the mold walls. a) taper b) shake c) shrinkage d) machine-finish e) draft 37. Removal of the runners, gates, and risers using cutting torches or band saws. a) cleaning b) degating c) blasting d) sand reclamation e) shakeout 38. Among the oldest and simplest furnaces used in the foundry industry. a) blast furnace b) rotating furnace c) cupola d) crucible e) electric arc 39. A fused nonmetallic material that protects molten metal from the air and extracts certain impurities from the melt. a) slag b) sand c) mold d) binder e) pearlite 40. Fine sand and binders are removed by extraction and collected in a bag house to be reprocessed and reused. a) cleaning b) shakeout c) reclamation d) mulling e) tumbling 41. A steel spike used to rap and draw a pattern from the sand. a) mull spike b) draw spike c) flask bar d) rap spike e) metal spike 42. Measured by the quantity of air that passes through a given sample of sand in a prescribed time and under standard conditions. a) refractoriness b) strength c) venting d) grain size and shape e)permeability 43. Process used to reduce or eliminate dissolved gases a) fluxing b) demagging c) purging d) degassing flux e) degassing 44. Casting defects wherein the mold separates enough to allow metal between the halves, along the parting line a) flash b) inclusion c) eccentricity d) mold shift e) short casting 45. Additional channels to provide an escape for the gases that are generated within the mold is a) liners b) casting pipe c) short pipe d) metal passage e) vents 46. Adding up more metal ores or scraps as it melts inside the furnace thereby maximizing the capacity of the furnace. a) pouring b) back charging c) charging d) feeding e) melting 47. A naturally bonded sand or a compounded molding sand mixture which has been tempered with water for use while still in the damp or wet condition. a) green sand b) compound sand c) oven-dried d) facing sand e) ordinary sand 48. In a two-part mold, the name given to the bottom half of the pattern, flask, mold or core is a) half flask b) parting surface c) cope d) sprues e) drag 49. A defect caused by the metal solidifying before it fills the cavity a) flash b) inclusion c) gas pockets d) mold shift e) short casting 50. Come from gas dissolving in the melt then coming out when it solidifies. a) blow holes b) entrapment c) gas pocketsd) trapping e) trapped gas