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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. Ma/vr






2. These have weaker secondary bonds which allow the stretching






3. Ma/vr x 100/1






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






5. Good high temp wear - tools






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






7. Vertical






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






9. Load/area






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






11. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles






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






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






14. MA=VR






15. When upper die is dropped on bottom






16. Hard - brittle






17. 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






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






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






20. A flexible communications cable that contains pairs of insulated copper wires that are twisted together for reduction of EMI and RFI and covered with an outer insulating jacket.






21. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures






22. Good wear - case hardening. ball bearings






23. 10MHZ






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






25. AC to DC






26. Produces; harder - stronger and less ductile product






27. 100GHZ+






28. The greater the sulphur the harder the rubber to stretch






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






30. 100khz






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






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






33. Mass X gravity X height






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






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






36. 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






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






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






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






40. Low pressure

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41. 1GHZ






42. Hard - strong






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






44. 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






45. 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.






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






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






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






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






50. Horizontal