Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 115 · 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.⚖️ Along a straight bar, measured from the left end, the effort is at 60 cm, the fulcrum at 90 cm and the load at 30 cm. Which class of lever is it? (a) class 2 (b) class 3 (c) class 1
2. 2.🔍 Which is the odd one out? (a) repeat each test (b) measure the same way (c) use the same load (d) hide a failed test
3. 3.True or false: “tall towers hold cables” is a suspension bridge. (a) False (b) True
4. 4.Which job does a mechanical engineer do? (a) designs factory machines (b) builds a website (c) designs aeroplane wings (d) keeps data safe online
5. 5.🔍 Which is the odd one out? (a) a crowbar (b) a water tap handle (c) a seesaw (d) a nutcracker
6. 6.True or false: a claw hammer on a nail is an inclined plane. (a) True (b) False
7. 7.True or false: using flexible joints makes a building less safe in earthquakes. (a) True (b) False
8. 8.True or false: a fixed pulley stays in one place. (a) True (b) False
9. 9.🌉 In a stone arch bridge, the stones are in … (a) friction (b) tension (c) compression (d) no force
10. 10.⚖️ A lever bar balances. The load is 240 N at ? cm from the fulcrum. The effort is 300 N at 40 cm from the fulcrum on the other side. What is the missing distance in centimetres?
11. 11.🧑‍🔧 Which kind of engineer refines crude oil? (a) aerospace (b) mechanical (c) chemical (d) biomedical
12. 12.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) read the challenge rules (c) strengthen the weak part (d) load it with coins
13. 13.True or false: using flexible joints makes a building safer in earthquakes. (a) False (b) True
14. 14.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
15. 15.♻️ A project report has 72 pages. How many sheets of paper are needed if it is printed on both sides of each sheet?
16. 16.🛠️ People need to carry many people far. Which invention helps? (a) a fridge (b) a telephone (c) a train (d) a solar panel
17. 17.🔍 Which is the odd one out? (a) a swing chain (b) a tent guy rope (c) a brick at a wall base (d) a crane lifting cable
18. 18.Which need does a bridge meet? (a) make power from sunlight (b) make water safe to drink (c) store water for summer (d) cross a wide river
19. 19.True or false: a movable pulley is on a flagpole top. (a) True (b) False
20. 20.🔺 A flat frame has 8 straight sides joined by loose pins at the corners. What is the least number of corner-to-corner braces needed to make it rigid?
21. 21.🏋️ A smooth ramp is 9 m long and rises 3 m. What effort pushes a 750 N box up it, in newtons? (ideal ramp, no friction)
22. 22.⚖️ A lever bar balances. The load is 400 N at 20 cm from the fulcrum. The effort is 80 N at ? cm from the fulcrum on the other side. What is the missing distance in centimetres?
23. 23.⚖️ A seesaw balances. Zoya (280 N) sits 3 m from the pivot on one side; Asha (420 N) sits ? m from the pivot on the other side. What is the missing distance in metres?
24. 24.🔍 Which is the odd one out? (a) plastic (b) brass (c) graphite (d) iron
25. 25.🛞 Is friction helpful or a problem here: a door hinge squeaking? (a) a problem (b) helpful
26. 26.🔄 Which design-process step is it to dream up possible fixes? (a) Plan (b) Imagine (c) Test (d) Create
27. 27.🤝 Is it good or poor teamwork to own up to a mistake? (a) good teamwork (b) poor teamwork
28. 28.True or false: to list the materials is the Plan step. (a) False (b) True
29. 29.🔢 To follow the engineering design process, what comes right after “Create”? (a) Improve (b) Test (c) Ask (d) Plan
30. 30.🔍 Which is the odd one out? (a) a tyre with deep treads (b) a box pushed on carpet (c) chalk on a gym bar (d) a wheel on ball bearings
31. 31.🔺 A frame shaped like a square is made of straws joined by loose pins, with 0 corner-to-corner braces. Is it rigid or wobbly? (a) wobbly (b) rigid
32. 32.📐 Why do engineers use scale drawings? (a) big things fit on paper (b) to save ink only (c) to make them pretty (d) to hide sizes
33. 33.🌉 Which bridge type: “a curve under the deck”? (a) suspension bridge (b) beam bridge (c) arch bridge
34. 34.🌉 Which bridge type can cross the widest gap in one span? (a) arch bridge (b) suspension bridge (c) beam bridge (d) log bridge
35. 35.🧑‍🔧 Which branch of engineering designs machines with moving parts? (a) chemical (b) biomedical (c) mechanical (d) civil
36. 36.🧑‍🔧 Which branch of engineering uses engineering to help doctors? (a) civil (b) aerospace (c) electrical (d) biomedical
37. 37.🪢 Tension or compression: a table leg? (a) tension (b) compression
38. 38.True or false: a well-bucket rope wheel is a wedge. (a) False (b) True
39. 39.Which job is a screwdriver for? (a) measure an angle (b) measure a long length (c) turn a screw (d) check a shelf is level
40. 40.True or false: a planetarium roof uses a beam. (a) False (b) True

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