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






2. Force/Area






3. A fluid power system uses hydraulics and a fluid under pressure to create a greater force than is applied






4. An indication of kinetic energy of mass at the molecular level






5. 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






6. Ignition - power stroke






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






8. 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






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






10. Often a free body has _______ acting on it






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






12. Modern Technology- More efficient-Better Cooling-Easier to service- longer life - lither weight- More expensive






13. One that pushes on an object






14. What we are studying






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






16. Applied at an angle or parallel to a surface






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






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






19. Length / Time






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

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


21. 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)






22. Length x Width x Height






23. 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






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






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






26. Compression-Tension-Shear






27. Force x Distance






28. When the fluid is in motion






29. Exhaust






30. More compact (size of beer keg) - No valves -Benefits: fewer parts - lower engine weight Problems: seal - lower inertia forces -1 rotar=3 to 4 pistons






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






32. Rotation may occur






33. When a simple machine increases a force it is at the expense of a ____ in the distance the load is moved






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






35. ...






36. Force without machine/Force with machine






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






38. 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






39. Piston travels up and both plugs are closed






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






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






42. Weight/Time






43. 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.






44. Can be applied at a time on an object






45. Exhaust of combustion products






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






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






48. When fluid is at rest






49. 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






50. Work/force or vertical distance/sloping distance