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. Force/Area






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






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






4. Describes how applied forces bring a body into motion






5. When the work done by the effort just equals the work done by the load - ______ of the machine will occur






6. A combination of components






7. 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






8. Result of a force moving an object against a resistance through some distance in a desired direction -Work transfers energy -Work is a measure of what is done and not the effort applied - Done by lifting - pushing - rotating - or sliding -W=Fd -F=Amo






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






10. Weight/Time






11. Exhaust of combustion products






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






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






14. Friction changes KE to heat energy- Heat is transferred to air- Front brakes work harder than rear- Some brakes use asbestos- Newer cars have dual braking systems - Don't drive through water or your brakes won't work well (ride breaks to dry them out






15. Compression-Tension-Shear






16. Combustion ignited by spark plug and materials are compressed






17. Pistons connected to crankshaft -1 stroke up - 1 stroke down of the piston -1 rotation of the piston -Problems: high emissions - noisy - inefficient - high vibrations - unburnt fuel - burnt oil -Benefits: small and light -Being phased out in USA - i.






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






19. 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

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


20. Both engines drive wheels -ICE used for cruising -Electric motor assists with low speed for acceleration and hill climbing






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






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






23. Can be applied:-By direct contact: push - pull - twist -At a distance: gravity - magnetism Can change: speed - direction - shape - units of force






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






25. A flat - sloping surface -The only simple machine that does not move -The force is applied to the ramp - since this is the direction the load weight is moved -Sloping side is longer than vertical side -Less force is required to accomplish the same am






26. The branch of science and engineering involving measurement






27. Dimensions and units






28. 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 (






29. A pull on an object






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






31. Length x Width x Height






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






33. Rotation will not occur - but translation might occur






34. An application of Pascal's Principle (trading distance and force while doing the same amount of work) -Gives a mechanical advantage -The muscles of machines - used to produce very large forces - use a fluid under pressure (gas is low pressure and liq






35. Length x Width






36. Air is drawn in






37. What we are not studying






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






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






40. Work/force or vertical distance/sloping distance






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






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






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






44. Applied at an angle or parallel to a surface






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






46. 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)






47. ...






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






49. When the moving fluid is a gas






50. When fluid is at rest