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






2. Resulting from exposure to damp environments and liquids.






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






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






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






6. Elongation of grain flow in direction of rolling






7. Hard - strong






8. 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






9. 10MHZ






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






11. 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






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






13. Ma/vr






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






15. Steel reinforcing rusts - rust has a greater volume concrete then breaks of as a result.






16. Good wear - case hardening. ball bearings






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






18. Difference/original






19. Rubbers






20. 1/4 of the wavelength (higher better)






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






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






23. Usually used together - strengthening and toughness






24. 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






25. Area parallel to force






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






27. When upper die is dropped on bottom






28. Better properties that would come from machining






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






30. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear






31. MA=VR






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






33. Produces; harder - stronger and less ductile product






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






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






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






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






38. High pressure


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






40. 1%<X<2% carbon. more cementite - used for files






41. Soft - ductile






42. Low pressure


43. Vertical






44. 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






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






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






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






48. 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






49. 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.






50. Area load piston/area of effort piston