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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. Area load piston/area of effort piston






2. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures






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






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






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






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






7. 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






8. Hard - brittle






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






10. 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






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






12. 1/2Xmass X velocity X velocity






13. Good toughness and fatigue. high strength structures






14. High pressure

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






16. Good high temp wear - tools






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






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






19. 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






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






21. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear






22. Horizontal






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






24. Vertical






25. Elongation of grain flow in direction of rolling






26. Usually used together - strengthening and toughness






27. Ma/vr






28. 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.






29. Mass X gravity X height






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






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






32. 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.






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






34. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles






35. Difference/original






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






37. 100GHZ+






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






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






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






41. Area parallel to force






42. Produces; harder - stronger and less ductile product






43. Good wear - case hardening. ball bearings






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






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






46. When upper die is dropped on bottom






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






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






49. 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






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