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






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






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






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






5. Bigger gear






6. 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.






7. Distance between the fulcrum and the effort force






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






9. Do the work faster






10. Mass of the object lifted by the lever






11. Is the work done by the machine






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






13. Consists of a wire - rope - or cable moving on a grooved wheel. One or more combinations of wheels and ropes can be fixed in place or moveable - help you lift larger loads.






14. F x d






15. Stored energy






16. Do the work easier






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






18. 1st class - 2nd class - 3rd class






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






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






21. F/A






22. Energy of motion






23. Reason that machines are never 100% efficient






24. (driven gear) smaller gear






25. Distance between the fulcrum and the load






26. 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)






27. Force exerted on the lever to make it move






28. Heated water to make steam and then used to move a piston. When the piston moved - it caused an attached rod (which was connected to a crankshaft) to move as well - making the engine work.






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






30. The rate of motion that an object changes position






31. Is the work needed to use - or operate the machine






32. Work unit






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






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






35. A fixed point






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






37. Science of designing machines to suit people






38. 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






39. Do not seal the gas (usually air)






40. 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






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






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






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






44. Several simple machines all working together in a system






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






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






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






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






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






50. Pneumatic system in your body