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






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






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






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






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






7. These have weaker secondary bonds which allow the stretching






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






9. Load/area






10. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles






11. 100GHZ+






12. An orbit in which a satellite orbits Earth at the same rate as Earth rotates and thus stays over the same place all the time






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






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






15. 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






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






17. Hard - strong






18. 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.






19. 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






20. Ma/vr






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






22. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures






23. Better properties that would come from machining






24. Horizontal






25. Mass X gravity X height






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






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






28. 1GHZ






29. Soft - ductile






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






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






32. Difference/original






33. When upper die is dropped on bottom






34. Good wear - case hardening. ball bearings






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






36. 1/4 of the wavelength (higher better)






37. Low pressure






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






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






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






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






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






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






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






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






46. 1%<X<2% carbon. more cementite - used for files






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






48. 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






49. Usually used together - strengthening and toughness






50. High pressure