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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. Forming of metal by compressive force above recrystallization point.






2. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles






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






4. A method of transmitting signals by changing the frequency of a wave






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






6. Good toughness and fatigue. high strength structures






7. 1/4 of the wavelength (higher better)






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






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






10. A motor that is light - rugged and very reliable - runs on ac current and are more common in robotics. Can only run at a certain speed






11. High pressure

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12. 100khz






13. Allows for another signal to be sent along the carrier signal






14. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures






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






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






17. AC to DC






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






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. Supply current to the rotating commutator from an external source






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






23. Rubbers






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






25. Load/effort






26. When upper die is dropped on bottom






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






28. A cable made of optical fibers that can transmit large amounts of information at the speed of light






29. Ma/vr






30. Area load piston/area of effort piston






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






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






33. Soft - ductile






34. Being forced - under pressure - through a hole like toothpaste. either hot or cold






35. Hard - brittle






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






37. Usually used together - strengthening and toughness






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






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






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






41. Horizontal






42. Majority silicon X>1.5% for graphite. Graphite in flakes that cause stress points






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






44. Better properties that would come from machining






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






46. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear






47. Good high temp wear - tools






48. Softening a material such as metal by controlled heating and cooling. This makes the metal less brittle and more easily adaptable. Soaking till austenite then cooling slowly. large grains






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






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