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. Body in motion (car)






2. Length x Width x Height






3. Describes how applied forces bring a body into motion






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






5. Can be applied at a time on an object






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






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






8. 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






9. External Combustion engine -Only used in factories and plants (not used in cars)






10. The amount of atoms and molecules in something - Matter is energy that has become solid -An object gains mass when it gains more energy and vice a versa -Units: SI- kgs and USA: Slugs - lbs






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






12. A combination of components






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






14. 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






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






16. In a hydraulic with an incompressible fluid - the total pressure at any point in the system is the same - liquid


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






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






19. Dimensions and units






20. Length x Width






21. What we are not studying






22. Force without machine/Force with machine






23. 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






24. Combustion of fuel mixture ignited by spark plug






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






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






27. What we are studying






28. Rotation will not occur - but translation might occur






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






30. When the fluid is in motion






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






32. 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






33. Combustion ignited by spark plug and materials are compressed






34. The magnitude of something in a particular direction






35. Force/Area






36. Incompressible (volume doesnt change) Transmit force evenly - Lubricates - Trap contaminants - Some based on vegetable oils - Biodegradable - Aircraft fluids noncombustible (thins as temperature rises)






37. Ignition - power stroke






38. When the moving fluid is a gas






39. 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






40. ...






41. One that pushes on an object






42. Liquid or gas






43. Air is drawn in






44. 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






45. Weight/Time






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






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






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






49. (pi) x (radius)^2






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