Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 305 · 40 questions

Engineer's tip (Find the topic, use the idea): Find the topic: design process, force, machine, lever, structure, material, bridge or scale. Use that lesson’s rule — what is in the middle, load × distance = effort × distance, work = force × distance, real = drawing × scale. Write the calculation before you answer.

1. 1.🪝 A pulley system has 1 rope section holding up the load. To lift the load by 4 m, how many metres of rope must you pull?
2. 2.True or false: a civil engineer designs car engines. (a) True (b) False
3. 3.🪢 Tension or compression: a table leg? (a) tension (b) compression
4. 4.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: sandpaper 10 N, ice 4 N, a glass sheet 5 N, a carpet 6 N. Which surface gave the most friction? (a) a carpet (b) sandpaper (c) a glass sheet (d) ice
5. 5.True or false: to wear safety goggles is safe. (a) False (b) True
6. 6.🏚️ What do engineers use to test models of buildings for earthquakes? (a) a fridge (b) a shake table (c) a microscope (d) a telescope
7. 7.🔍 Which is the odd one out? (a) a rainbow (b) a river (c) a cloud (d) a bridge
8. 8.🧱 Which material is best for the core of an electric wire? (a) rubber (b) wood (c) glass (d) copper
9. 9.🪝 A well winch has a handle (wheel) of radius 9 cm turning an axle of radius 3 cm. What is its mechanical advantage (MA)?
10. 10.True or false: a fixed pulley hangs on the rope loop. (a) True (b) False
11. 11.🧑‍🔧 Which kind of engineer designs electric motors? (a) chemical (b) aerospace (c) civil (d) electrical
12. 12.🔄 Which design-process step is it to make it better, retest? (a) Ask (b) Improve (c) Test (d) Plan
13. 13.🪝 A load of 520 N hangs from a pulley system in which 2 rope sections hold up the load. What effort is needed, in newtons? (ideal pulleys)
14. 14.Which of these happens in the Test step? (a) think of wild ideas (b) try it out (c) follow the plan to build (d) make a prototype
15. 15.True or false: to clamp wood before sawing is safe. (a) True (b) False
16. 16.🛠️ Which of these is a problem an engineer could solve? (a) a boring story (b) a road that floods (c) a lost cricket match (d) a sad song
17. 17.Which job does an electrical engineer do? (a) designs factory machines (b) plans a space mission (c) designs car engines (d) plans a power grid
18. 18.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
19. 19.⚖️ What is the pivot point of a lever called? (a) the fulcrum (b) the load (c) the axle (d) the effort
20. 20.🪝 What does a single fixed pulley change? (a) the size of the load (b) gravity (c) the direction of pull (d) the colour of rope
21. 21.True or false: a broom when sweeping is a class 3 lever (effort in the middle). (a) True (b) False
22. 22.♻️ Reduce, reuse or recycle: refill a water bottle? (a) recycle (b) reduce (c) reuse
23. 23.What does the recorder do? (a) writes down results (b) cuts and joins parts (c) runs the tests (d) shares out the jobs
24. 24.True or false: to guess, do not measure is good testing. (a) False (b) True
25. 25.🔍 Which is the odd one out? (a) change lots at once (b) change only one thing (c) use a new load each time (d) guess, do not measure
26. 26.⚙️ Which simple machine is a road up a hill? (a) inclined plane (b) wheel and axle (c) pulley (d) lever
27. 27.🏋️ In which unit is work measured? (a) joule (J) (b) watt hour (c) newton (N) (d) metre (m)
28. 28.🪝 A well winch has a handle (wheel) of radius 14 cm turning an axle of radius 2 cm. What is its mechanical advantage (MA)?
29. 29.Which of these is a wedge? (a) a nutcracker (b) a road up a hill (c) a knife edge (d) a playground slide
30. 30.🤝 Is it good or poor teamwork to help a stuck teammate? (a) good teamwork (b) poor teamwork
31. 31.🔄 Which design-process step is it to redesign after testing? (a) Improve (b) Plan (c) Imagine (d) Create
32. 32.🧪 A paper bridge was tested three times. It held 330 g, 220 g and 140 g. What is the mean (average) load it held, in grams?
33. 33.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
34. 34.🏚️ Three solid model towers are made of the same material. Tower A is 150 cm tall on a 30 cm wide base, tower B is 20 cm tall on a 10 cm base and tower C is 30 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower C (b) tower A (c) tower B
35. 35.Which of these uses a dome? (a) a shelf on two brackets (b) a plank over a drain (c) a slab over a canal (d) a planetarium roof
36. 36.True or false: a civil engineer designs factory machines. (a) True (b) False
37. 37.🪢 Tension is a force that … (a) pushes or squeezes (b) heats things (c) turns things (d) pulls or stretches
38. 38.🧑‍🔧 Which kind of engineer writes app software? (a) chemical (b) mechanical (c) computer (d) biomedical
39. 39.⚖️ A seesaw balances. Asha (340 N) sits 2 m from the pivot on one side; Zoya (? N) sits 2 m from the pivot on the other side. What is the missing weight in newtons?
40. 40.True or false: an electrical engineer designs knee implants. (a) True (b) False

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