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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 x 100/1






2. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles






3. 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






4. Vertical






5. Good high temp wear - tools






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






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






8. Hard - brittle






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






10. Soft - ductile






11. MA=VR






12. 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






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






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






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






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






17. 100khz






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






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






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






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






22. Resulting from exposure to damp environments and liquids.






23. Usually used together - strengthening and toughness






24. 1%<X<2% carbon. more cementite - used for files






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






26. Good toughness and fatigue. high strength structures






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






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






29. 1GHZ






30. 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






31. 100GHZ+






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






33. Rubbers






34. 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.






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






36. Good wear - case hardening. ball bearings






37. Low pressure

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38. When upper die is dropped on bottom






39. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear






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






41. AC to DC






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






43. 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






44. Difference/original






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






46. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures






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






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






49. Ma/vr






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