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






3. When upper die is dropped on bottom






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






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






6. Ma/vr x 100/1






7. 1/4 of the wavelength (higher better)






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






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






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. Difference/original






12. Hard - strong






13. 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






14. Elongation of grain flow in direction of rolling






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






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






17. Area parallel to force






18. Resulting from exposure to damp environments and liquids.






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






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






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






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






23. Soft - ductile






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






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






26. Usually used together - strengthening and toughness






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






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






29. 10MHZ






30. Load/area






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






32. 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






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






34. 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






35. 1%<X<2% carbon. more cementite - used for files






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






37. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles






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






39. Mass X gravity X height






40. Vertical






41. Ma/vr






42. 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






43. A cable made of optical fibers that can transmit large amounts of information at the speed of light






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






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






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






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






48. AC to DC






49. 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






50. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear






Can you answer 50 questions in 15 minutes?



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