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






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






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






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






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






6. AC to DC






7. Controlled cooling after heating metal to attain a degree of hardness. removes internal stresses






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






9. 1/4 of the wavelength (higher better)






10. Good wear - case hardening. ball bearings






11. Good toughness and fatigue. high strength structures






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






13. Area load piston/area of effort piston






14. Mass X gravity X height






15. 100GHZ+






16. Area parallel to force






17. MA=VR






18. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear






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






20. Usually used together - strengthening and toughness






21. Hard - brittle






22. Ma/vr






23. 1%<X<2% carbon. more cementite - used for files






24. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles






25. Load/area






26. 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






27. 1/2Xmass X velocity X velocity






28. Load/effort






29. Vertical






30. Better properties that would come from machining






31. Makes brittle by heating and then cooling quickly - less flexible. Red Heat then quenching






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






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






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






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






36. 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 Fluorescent light is turned on to expose any left over - I.e in the cracks






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






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






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






40. Used where scarifical anodes cannot supply enough protection - offshore oil rigs - buried pipes - big things. protection is provided by connecting a rectifier to provide a direct current source between the anode and the metal being protected.






41. Low pressure

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42. 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






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






44. 10MHZ






45. A solid state component made from three layers of semiconductor material that can amplify the strenght of an electric signal or act as an electronic switch






46. Elongation of grain flow in direction of rolling






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






48. High pressure

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






50. Soft - ductile