Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 793 · 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.🛞 How can we reduce friction in a machine? (a) make parts rough (b) press parts harder (c) oil the moving parts (d) add sand
2. 2.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
3. 3.📐 A beam is 600 cm long. How long is it in metres? =
4. 4.⚖️ A seesaw balances. Meena (100 N) sits ? m from the pivot on one side; Arjun (300 N) sits 1 m from the pivot on the other side. What is the missing distance in metres?
5. 5.🏋️ Pushing a crate 8 m took 2480 J of work. What force was used, in newtons?
6. 6.🪢 A sign weighing 800 N hangs from 5 identical vertical ropes that share the load equally. What is the tension in each rope, in newtons?
7. 7.True or false: “cables tied down at ends” is a suspension bridge. (a) True (b) False
8. 8.True or false: a chemical engineer refines crude oil. (a) True (b) False
9. 9.🔄 After testing, a design does not work well. What comes next? (a) Imagine (b) Ask (c) give up (d) Improve
10. 10.🏚️ What do engineers use to test models of buildings for earthquakes? (a) a fridge (b) a shake table (c) a telescope (d) a microscope
11. 11.🧑‍🔧 Which kind of engineer designs factory machines? (a) aerospace (b) biomedical (c) mechanical (d) electrical
12. 12.🏚️ Three solid model towers are made of the same material. Tower A is 200 cm tall on a 40 cm wide base, tower B is 240 cm tall on a 40 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 B (c) tower A
13. 13.🧑‍🔧 Which branch of engineering uses engineering to help doctors? (a) biomedical (b) aerospace (c) electrical (d) civil
14. 14.🔺 A frame shaped like a triangle is made of straws joined by loose pins, with 0 corner-to-corner braces. Is it rigid or wobbly? (a) rigid (b) wobbly
15. 15.⚖️ Which class of lever is a lemon squeezer? (a) class 2 (b) class 1 (c) class 3
16. 16.♻️ Which is the BEST order to think about waste? (a) reduce, reuse, recycle (b) recycle, reuse, reduce (c) burn, bury, forget (d) reuse, recycle, reduce
17. 17.What does the team leader do? (a) writes down results (b) tracks what is used up (c) checks the goals are met (d) keeps the team on track
18. 18.🤝 In a design team, who cuts and joins parts? (a) tester (b) builder (c) materials manager (d) recorder
19. 19.True or false: a crowbar is a class 2 lever (load in the middle). (a) True (b) False
20. 20.🔢 To follow the engineering design process, which comes first: “Imagine” or “Create”? (a) Create (b) Imagine
21. 21.True or false: a biomedical engineer designs car engines. (a) True (b) False
22. 22.📋 For a model bridge challenge, is “fit on a school desk” a constraint or a criterion? (a) a constraint (b) a criterion
23. 23.⚖️ A lever bar balances. The load is ? N at 40 cm from the fulcrum. The effort is 240 N at 20 cm from the fulcrum on the other side. What is the missing force in newtons?
24. 24.💪 Which force is at work: brakes stop a bicycle? (a) friction (b) muscular force (c) magnetic force (d) gravity
25. 25.🔍 Which is the odd one out? (a) leaving out steel bars (b) fitting rubber base pads (c) stacking loose bricks (d) building tall and narrow
26. 26.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “sketch three ideas”? (a) sketch three ideas (b) build it with straws
27. 27.True or false: to blame others for faults is good teamwork. (a) False (b) True
28. 28.🤝 In a design team, who shares out the jobs? (a) team leader (b) recorder (c) materials manager (d) tester
29. 29.⚖️ Going along a lever from one end to the other, the order is: effort, fulcrum, load. Which class of lever is it? (a) class 2 (b) class 3 (c) class 1
30. 30.♻️ Reduce, reuse or recycle: carry a cloth bag? (a) recycle (b) reduce (c) reuse
31. 31.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: sandpaper 9 N, ice 1 N, a wooden plank 4 N, a carpet 6 N. How many newtons more were needed on sandpaper than on ice?
32. 32.⚖️ Along a straight bar, measured from the left end, the effort is at 30 cm, the fulcrum at 60 cm and the load at 100 cm. Which class of lever is it? (a) class 2 (b) class 3 (c) class 1
33. 33.🛞 More or less friction: a smooth steel slide? (a) more friction (b) less friction
34. 34.🪝 A load of 330 N hangs from a pulley system in which 3 rope sections hold up the load. What effort is needed, in newtons? (ideal pulleys)
35. 35.💪 Is hitting a cricket ball a push or a pull? (a) a pull (b) a push
36. 36.💪 Which force is at work: shoes grip the floor? (a) muscular force (b) magnetic force (c) friction (d) gravity
37. 37.⚖️ A lever bar balances. The load is 320 N at 40 cm from the fulcrum. The effort is 160 N at ? cm from the fulcrum on the other side. What is the missing distance in centimetres?
38. 38.📋 Criteria are … (a) the limits on money (b) the tools you use (c) the team names (d) goals a design must meet
39. 39.True or false: a lift helps people cross a wide river. (a) False (b) True
40. 40.🏚️ Does having a wide base make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe

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