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






2. Good wear - case hardening. ball bearings






3. 1/2Xmass X velocity X velocity






4. Load/effort






5. Load/area






6. 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






7. AC to DC






8. 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






9. Vertical






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






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






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






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






14. 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






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






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






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






18. 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






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






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






21. Elongation of grain flow in direction of rolling






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






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






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






25. When upper die is dropped on bottom






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






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






28. 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






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






30. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear






31. Resulting from exposure to damp environments and liquids.






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






33. 1GHZ






34. Hard - strong






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






36. Difference/original






37. 1/4 of the wavelength (higher better)






38. 100GHZ+






39. Soft - ductile






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






41. Horizontal






42. 10MHZ






43. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures






44. 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.






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






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






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






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






49. 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






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