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






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






3. Area parallel to force






4. 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






5. Vertical






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






7. 100GHZ+






8. Difference/original






9. Rubbers






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






11. These have weaker secondary bonds which allow the stretching






12. Hard - brittle






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






14. AC to DC






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






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






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






18. 1/4 of the wavelength (higher better)






19. Soft - ductile






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






21. Ma/vr x 100/1






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






23. Elongation of grain flow in direction of rolling






24. Horizontal






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






26. Area load piston/area of effort piston






27. Good high temp wear - tools






28. 1/2Xmass X velocity X velocity






29. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures






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






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






32. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear






33. 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.






34. 10MHZ






35. 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






36. Forming of metal by compressive force above recrystallization point.






37. Better properties that would come from machining






38. 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






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






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






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






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






43. 1%<X<2% carbon. more cementite - used for files






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






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






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






47. 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






48. Hard - strong






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






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