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






2. Old technology- harder to service-Still used on big trucks and trailers because they are too expensive to convert






3. Length x Width x Height






4. Weight/Time






5. Combine two or more power sources - locomotives - buses (diesel- electric) -Submarines (Nuclear- electric) -Components:gas engine - fuel tank - electric motor - generator - batteries - transmission -2 motors: Internal Combustion Engine and Electric E






6. Rotation may occur






7. Compression of fuel mix






8. For every action there is an equal and opposite reaction -Force -F=mg -Earth exerts a force on all of us

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9. One that pushes on an object






10. Static - Dynamic






11. Exhaust of combustion products






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






13. (Force)(Distance)/Seconds






14. 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






15. Movement along a line (reciprocal or linear motion) -Units: feet and meters






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






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






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






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






20. Dimensions and units






21. The branch of science and engineering involving measurement






22. In a hydraulic with an incompressible fluid - the total pressure at any point in the system is the same - liquid

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23. A pull on an object






24. 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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25. Intake of fuel and air mixture - compression of mixture by piston






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






27. Rotation will not occur - but translation might occur






28. When two parallel forces equal in magnitude and opposite direction - i.e. steering wheel - turn a know - turn on and off a faucet






29. The perpendicular distance from the pivot point to the point of application of the force (d) - M=Fd -Clockwise=Negative moment -Counterclockwise=Positive moment






30. A combination of components






31. The standard system of units that uses base 10 and used in the rest of the world. US does not use - but Great Britain does - Base Units: mass - kilograms (kg) - length- meters (m) - and time-Seconds (S) - Force is a derived unit measured in newtons (






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






33. Energy may enter or leave. Mass can enter or leave the system i.e. open water bottle - molecule - hydraulic cylinder - human






34. 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






35. Derived from - or composed of - base dimensions i.e. Area (length x width) - Weight (mass x acceleration) - velocity (length/time)






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






37. 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)






38. The magnitude of something in a particular direction






39. A device that uses energy to do work to accomplish some desired activity - They do not produce energy - but they do transmit and transform energy - Machines can transmit a force - control its motion - and change its direction - a system of components






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






41. Combustion of fuel mixture ignited by spark plug






42. Mass x acceleration






43. Body in motion (car)






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






45. What we are not studying






46. Length / Time






47. Force x Distance






48. Two stroke- Four Stroke- Diesel-Rotary -Hybrid






49. A system adopted from an old British system of units in the 13th century -Engineering system -Units: length- foot (ft) - time- second (s) - force-(lbs) - Mass is a derived unit called a slug -Political/Economic choice -Awkward






50. The force simple machines use to do work on a single load or against a single force