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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. 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






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






3. AC to DC






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






5. Load/effort






6. Hard - strong






7. Low pressure


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






9. Vertical






10. Good wear - case hardening. ball bearings






11. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear






12. Resulting from exposure to damp environments and liquids.






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






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






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






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






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






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






19. 1GHZ






20. These have weaker secondary bonds which allow the stretching






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






22. 100khz






23. 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.






24. Horizontal






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






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






27. 100GHZ+






28. Better properties that would come from machining






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






30. 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






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






32. Good toughness and fatigue. high strength structures






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






34. MA=VR






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






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






37. Rubbers






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






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






40. Hard - brittle






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






42. 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






43. 1/4 of the wavelength (higher better)






44. Area load piston/area of effort piston






45. 10MHZ






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






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






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






49. High pressure


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






?:?:)

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