Test your basic knowledge |

Mechanical Engineering

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. ICE generates electricity for electric battery -Electric motor turns wheels






2. Causes acceleration -Units: USA: 32.2 ft/s^2 SI: 9.8 m/sec^2






3. One that pushes on an object






4. Tells us how fast work is done - varies with time (more power is needed to do work in less time - and less power is needed to do work in more time) =Fd/s -Units: USA: ft- lb/s SI: watts (J/S)






5. ...






6. 1. Magnitude: size - a numberi.e. 50 mph 2. Direction: angle i.e. N -E -W -S






7. (Force)(Distance)/Seconds






8. What we are studying






9. Work/force or vertical distance/sloping distance






10. More compact (size of beer keg) - No valves -Benefits: fewer parts - lower engine weight Problems: seal - lower inertia forces -1 rotar=3 to 4 pistons






11. Mechanics is an application of math that describes how forces affect a body






12. External Combustion engine -Only used in factories and plants (not used in cars)






13. Combustion ignited by spark plug and materials are compressed






14. Every object continues in motion in a straight line unless acted upon by some force -Every object at rest continues at rest unless acted upon by a force -So forces cause a change in an object's state of motion

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15. Incompressible (volume doesnt change) Transmit force evenly - Lubricates - Trap contaminants - Some based on vegetable oils - Biodegradable - Aircraft fluids noncombustible (thins as temperature rises)






16. When the moving fluid is a gas






17. Rotation will not occur - but translation might occur






18. Mass can neither by created nor destroyed - only transformed






19. Result of gravity acting on mass -The greater the mass - the greater the weight -Is a force -Units: lbs - N






20. What we are not studying






21. Translation (slide) -Rotate -Slide and Rotate Together






22. Used in cars -2 rotations of crankshaft -4 strokes (down - up - down - up) of piston - i.e. cars - trucks - planes - buses - motorcycles - submarine -1% of gas actually moves people






23. Piston travels up and both plugs are closed






24. A pull on an object






25. Describes how applied forces bring a body into motion






26. Three- dimensional property measured in units of length times length times length =length x width x height






27. Ignition - power stroke






28. Length x Width x Height






29. Psi - newtons - pascals






30. A movement around a central pivot point (rotational movement) -Units: revolutions per second (rps) and revolutions per minute (rpm)






31. The amount of atoms and molecules in something - Matter is energy that has become solid -An object gains mass when it gains more energy and vice a versa -Units: SI- kgs and USA: Slugs - lbs






32. A^2+b^2=c^2






33. Force x Distance






34. Length x Width






35. Used to measure or quantify -US Common: Absolute and Gravitational -SI: absolute






36. In a right triangle - the sum of the squares of the sides equals the square of the hypotenous






37. When the work done by the effort exceeds the work done by the load - the load...






38. An indication of kinetic energy of mass at the molecular level






39. Force/Area






40. Exhaust






41. A small piece that makes up a larger whole. Each component is there for a specific job - but the sum of components






42. Exhaust of combustion products






43. Weight/Time






44. The magnitude of something in a particular direction






45. Can be reduced by decreasing the weight or force or increasing the area i.e. airbag






46. Varies by location (on earth) - distance (from earth) - and mass (of planet)






47. A combination of components






48. Same pressure - work - volume - Different forces and distances






49. Body at rest or is in equilibrium (wall)






50. Force without machine/Force with machine