Test your basic knowledge |

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






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






3. Vertical






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






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






6. Area load piston/area of effort piston






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






8. 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






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






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






11. Good high temp wear - tools






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






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






14. 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






15. When upper die is dropped on bottom






16. 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






17. Rubbers






18. Hard - brittle






19. 1/4 of the wavelength (higher better)






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






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






22. AC to DC






23. Hard - strong






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. The greater the sulphur the harder the rubber to stretch






26. Good wear - case hardening. ball bearings






27. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures






28. Horizontal






29. 10MHZ






30. Good toughness and fatigue. high strength structures






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






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






33. Usually used together - strengthening and toughness






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






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






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






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






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






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






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






41. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear






42. Mass X gravity X height






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






44. 100GHZ+






45. Elongation of grain flow in direction of rolling






46. 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






47. 1/2Xmass X velocity X velocity






48. Load/effort






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






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