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






2. Load/effort






3. Ma/vr






4. 1%<X<2% carbon. more cementite - used for files






5. Elongation of grain flow in direction of rolling






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






7. 100khz






8. AC to DC






9. Mass X gravity X height






10. 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.






11. Resulting from exposure to damp environments and liquids.






12. 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






13. When upper die is dropped on bottom






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






15. 100GHZ+






16. 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.






17. Horizontal






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






19. 1GHZ






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






21. 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






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






23. 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






24. 10MHZ






25. Produces; harder - stronger and less ductile product






26. Load/area






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






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






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






30. Area parallel to force






31. Usually used together - strengthening and toughness






32. Difference/original






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






34. 1/2Xmass X velocity X velocity






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






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






37. Soft - ductile






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






39. Low pressure


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






41. These have weaker secondary bonds which allow the stretching






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






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






44. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures






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






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






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






48. A device that converts the AC inside a DC generator to a DC output or converts a DC supply to an AC inside a DC motor.keeping the armature rotating






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






50. 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