Test your basic knowledge |

Mechanical Systems

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. Distance between the fulcrum and the effort force






2. The fluid transfers the pressure from the input piston to the ____________






3. Stored energy






4. Pneumatic system in your body






5. Bigger gear






6. A pair of wheels that have teeth that interlink. When they rotate together - one gear wheel transfers turning motion and force to the other.






7. A measure of the amount of force applied to a given area






8. Distance between the fulcrum and the load






9. Mass of the object lifted by the lever






10. When the driving and the driven gears are the same size






11. Is the work done by the machine






12. Consists of a small cylinder that has a crank or handle. The axle of the winch acts like the fulcrum - the handle is the effort arm






13. A very complex combination of pulleys - including fixed and movable is called






14. Energy is transferred from one place to another - and no energy is changed or converted.






15. The rate of motion that an object changes position






16. Do the work faster






17. A small gear driving a larger gear increases torque and reduces speed in the driven gear






18. A fixed point






19. Heated water to make steam and then used to move a piston in a circular motion






20. Hydraulic system in your body






21. Work done by machine / work done to make the machine operate x100






22. Act like levers






23. The comparison of the force produced by a machine to the force applied to the machine. (the size of the load vs the size of the force needed to move the load)






24. A group of parts that work together to perform a function






25. Transferred to kinetic energy in machines in a dam to generate electrical energy






26. Or ramp - makes it easier to move a load higher than it is - but - it has to be moved over a much longer distance.






27. A combination of two wheels of different diameters that turn together - a lever that rotates in a circle around a center point or fulcrum.






28. Required a large shift in population from rural areas to the cities.






29. Within a machine are groups of parts that perform specific functions - such as braking or steering






30. Are used to overcome the frictional force of the machine






31. Reason that machines are never 100% efficient






32. Force exerted on the lever to make it move






33. F x d






34. A rigid bar or plank that can rotate around a fixed point






35. 1st class - 2nd class - 3rd class






36. Unit of measurement for pressure






37. Load Force (FL)/Effort Force (FE)






38. A large gear driving a smaller gear decreases torque and increases speed in the driven gear






39. Science of designing machines to suit people






40. Work unit






41. The combustion occurs inside the engine. The pistons goes through 4 steps: Intake stroke (taking in the fuel) - compression stroke (compressing the fuel- air mixture) - power stroke (the fuel- air mixture is ignited) - exhaust stroke (waste products






42. The production of large quantities of a standardized article (often using assembly line techniques)






43. Is done when a force acts on an object to make that object move - a transfer of energy






44. Used to apply force to the fluid - which creates pressure in the fluid






45. F/A






46. Force of the small piston/area of the small piston = Force of the large piston/Area of the large piston






47. Used to control the flow of a fluid. It is a moveable part that controls the flow by opening or closing






48. Do the work easier






49. To increase the force on the output piston - the input piston must move through a greater distance






50. The relationship between the speed of rotations of a smaller gear and a larger gear - can be calculated by dividing the number of driver gear teeth by the number of follower gear teeth.