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Engineering Studies

Subject : engineering
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Being forced - under pressure - through a hole like toothpaste. either hot or cold






2. Squeezing of the hot metal between two shaped dies excess is cut off






3. Resulting from combined effect of stresses set up within the metal






4. Glass that is strengthened by introducing stress through rapid heating and cooling of the glass surfaces






5. When upper die is dropped on bottom






6. An orbit less than 1 -500 km. above the Earth's surface.






7. Hard - brittle






8. Produces; harder - stronger and less ductile product






9. Glass made with plates of plastic or resin or other material between two sheets of glass to prevent shattering






10. Usually used together - strengthening and toughness






11. Can be reflected of the ionosphere - 3 to 30 megahertz






12. The quantity of information that can be transmitted through a communication medium in a given amount of time.






13. Elongation of grain flow in direction of rolling






14. 1GHZ






15. Occurs when the metal is hammered by a vertically moving tool onto a stationary tool






16. Ma/vr x 100/1






17. Us a metal that is more reactive. It is connect to another metal and corrodes instead of the other metal. the Anode is replaced periodically






18. Difference/original






19. An orbit in which a satellite orbits Earth at the same rate as Earth rotates and thus stays over the same place all the time






20. Can only be softened once - bonded strongly - generally stronger that thermoplastics. stronger secondary bonds






21. A method of transmitting signals by changing the amplitude of a waves






22. Based on the principle that magnetic materials will have distorted magnetic fields in the vicinity of material defects






23. A strong hard building material composed of sand and gravel and cement and water






24. Soft - ductile






25. 100GHZ+






26. Degradation of a signal as it travels over a cable. Attenuation increased with higher frequencies






27. Results from the changing anode and cathode regions over the entire surface






28. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear






29. Supply current to the rotating commutator from an external source






30. Soaked cast iron at 870c for long time then cooled slow






31. Maximum bending moments X distance to natural axis/ second moment of area






32. X<1% silicon no graphite - has carbon/carbide. very brittle






33. MA=VR






34. Good toughness and fatigue. high strength structures






35. Solid at room temp - weak secondary bonds. can be reheated multiply times.






36. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles






37. Sound waves sent through a material - much like sonar. Internal defects appear because they use more energy to go through it.






38. 1%<X<2% carbon. more cementite - used for files






39. Dye is sprayed onto a surface - with excess being wiped away - meaning any left on the piece would be in cracks that exist in it. A developer is then added to it to expose any left over - I.e in the cracks






40. Between 2000-35 -700km above the earth's surface.






41. Steel reinforcing rusts - rust has a greater volume concrete then breaks of as a result.






42. Resulting from exposure to oxygen in the atmosphere - chemical fumes - steam - flue gas. creates a layer of metal oxide.






43. Involves heating the piece above Red heat and then letting it cool in air. causes smaller grains






44. Better properties that would come from machining






45. High pressure

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46. These have weaker secondary bonds which allow the stretching






47. Field winding parallel to armature winding. Bad for direct coupling






48. x<0.15% carbon. ferrite. good for cold working - rolling sheets






49. Small amounts of magnesium to make spheres instead of flakes. thus no stress concentrations






50. Use of xrays passed through the material to make a visual record of internal structures on specially sensitized film