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






2. Static - Dynamic






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






4. Mass x acceleration






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






6. 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






7. Rotation may occur






8. Combustion ignited by spark plug and materials are compressed






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






10. Force x Distance






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






12. Translation (slide) -Rotate -Slide and Rotate Together






13. Length / Time






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






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






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






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






18. When the fluid is in motion






19. If the force needed to operate the machine (input force) is less than the force being opposed or the load being moved (output force) -The ratio of the output force divided by the input force -If the number is greater than one - there is a mechanical






20. When the work done by the effort exceeds the work done by the load - the load...






21. Used in cars -2 rotations of crankshaft -4 strokes (down - up - down - up) of piston - i.e. cars - trucks - planes - buses - motorcycles - submarine -1% of gas actually moves people






22. Body in motion (car)






23. Exhaust of combustion products






24. ...






25. Compression-Tension-Shear






26. Force/Area






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






28. A quantity that has both magnitude and direction when placed within a coordinate system -Forces and Velocity i.e. driving 50 miles to the northeast






29. Applied at an angle or parallel to a surface






30. Work/force or vertical distance/sloping distance






31. One that pushes on an object






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






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






34. 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






35. Result of gravity acting on mass -The greater the mass - the greater the weight -Is a force -Units: lbs - N






36. 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






37. Energy may enter or leave. Mass can enter or leave the system i.e. open water bottle - molecule - hydraulic cylinder - human






38. A combination of components






39. 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






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






41. Often a free body has _______ acting on it






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






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






44. What we are not studying






45. The branch of science and engineering involving measurement






46. Piston travels up and exhaust valve opens. Combustion by product exhaustion






47. When fluid is at rest






48. (Force)(Distance)/Seconds






49. 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






50. 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