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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. 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)






2. A change in velocity over time -Unites: USA- ft/s^2 and SI: m/s^2






3. Fuel is injected and combusts due to temperature of compressed air






4. Energy may enter or leave. No mass enters or leaves the system i.e. Closed water bottle - car engine - human






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






6. Describes how applied forces bring a body into rest or equilibrium






7. Piston travels up and exhaust valve opens. Combustion by product exhaustion






8. Air is compressed - work is done on the system






9. Compression of fuel mix






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






11. A pull on an object






12. Compression-Tension-Shear






13. A flat - two dimensional property -Units of length multiplied by length describe area -A=length x width






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






15. Can be applied at a time on an object






16. 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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17. ...






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






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






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






21. Length / Time






22. Describes how applied forces bring a body into motion






23. Describes a physical property of anything - What we are measuring






24. When the sum of all forces and the sum of all moments both equal forces - No movement






25. 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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26. Force/Area






27. Psi - newtons - pascals






28. The designing of machines that contribute to society and our quality of life - Mechanical engineers apply the principles of mathematics - chemistry - and physics to solve real- world problems






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






30. (Force)(Distance)/Seconds






31. Length x Width x Height






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






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






34. Force x Distance






35. Are independent of other dimensions - They are limited in number - length - mass - time - temperature - force






36. Combustion ignited by spark plug and materials are compressed






37. Four Stroke Engine -Used in hotter areas because more efficient -Higher compression ratio than gasoline






38. Allows comparison between different measuring systems and units - Necessary to market internationally






39. The magnitude of something in a particular direction






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






41. Mass x acceleration






42. A combination of components






43. Piston travels down and intake valve is opened. Intake of fuel and air into chamber






44. Brake pedal and linkage - Master Cylinder - Wheel cylinders (4) - Hydraulic lines - Hydraulic fluid - Mechanical advantage is provided by the foot pedal to the booster (level) - A greater force is applied on the wheel cylinders than on the brake peda






45. Air is drawn in






46. 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






47. Body in motion (car)






48. Liquid or gas






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






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







Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?


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