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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. These have weaker secondary bonds which allow the stretching






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






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






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






5. Hard - brittle






6. Elongation of grain flow in direction of rolling






7. Good high temp wear - tools






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






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






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






11. MA=VR






12. High pressure

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13. Difference/original






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






15. Ma/vr x 100/1






16. Load/area






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






18. 100GHZ+






19. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles






20. 100khz






21. AC to DC






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






23. 1/2Xmass X velocity X velocity






24. 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.






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






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






27. 1/4 of the wavelength (higher better)






28. Produces; harder - stronger and less ductile product






29. 1GHZ






30. 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






31. Usually used together - strengthening and toughness






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






33. 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






34. Area load piston/area of effort piston






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






36. 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






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






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






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






40. 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.






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






42. 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






43. 10MHZ






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






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






46. Horizontal






47. Good wear - case hardening. ball bearings






48. Hard - strong






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