Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 273 · 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 30 cm and the load at 50 cm. Which class of lever is it? (a) class 2 (b) class 1 (c) class 3
2. 2.Which of these is recycle (make new things)? (a) switch off unused lights (b) use a jar as a pen stand (c) melt glass into new jars (d) fix a dripping tap
3. 3.🤝 Why do engineers work in teams? (a) to work alone (b) to finish nothing (c) to argue more (d) many skills and ideas
4. 4.🤝 In a design team, who cuts and joins parts? (a) tester (b) team leader (c) builder (d) materials manager
5. 5.⚙️ How many simple machines are there in the usual list? (a) 10 (b) 3 (c) 6 (d) 12
6. 6.🪢 Tension is a force that … (a) turns things (b) pushes or squeezes (c) heats things (d) pulls or stretches
7. 7.🏋️ A force of 140 N did 560 J of work. How many metres did the object move?
8. 8.⚖️ Which class of lever is a pair of kitchen tongs? (a) class 1 (b) class 2 (c) class 3
9. 9.🔢 To follow the engineering design process, what comes right after “Test”? (a) Imagine (b) Improve (c) Plan (d) Create
10. 10.⚖️ Along a straight bar, measured from the left end, the effort is at 10 cm, the fulcrum at 70 cm and the load at 30 cm. Which class of lever is it? (a) class 3 (b) class 2 (c) class 1
11. 11.True or false: a chemical engineer refines crude oil. (a) True (b) False
12. 12.🤝 In a design team, who writes down results? (a) tester (b) builder (c) team leader (d) recorder
13. 13.🌉 Which bridge type: “good for short gaps”? (a) suspension bridge (b) arch bridge (c) beam bridge
14. 14.📐 How many millimetres are in 1 centimetre? (a) 1000 (b) 5 (c) 100 (d) 10
15. 15.⚖️ A lever bar balances. The load is ? N at 30 cm from the fulcrum. The effort is 240 N at 70 cm from the fulcrum on the other side. What is the missing force in newtons?
16. 16.Which of these uses a dome? (a) a shelf on two brackets (b) a lintel over a door (c) a planetarium roof (d) a slab over a canal
17. 17.🔄 Which design-process step is it to redesign after testing? (a) Improve (b) Plan (c) Create (d) Ask
18. 18.Which of these needs a flexible material? (a) a water tank (b) a magnifier lens (c) a roof sheet (d) a skipping rope
19. 19.🪢 Tension or compression: a stone in an arch? (a) tension (b) compression
20. 20.🛞 Which surface gives the MOST friction to a sliding block? (a) polished marble (b) ice (c) glass (d) sandpaper
21. 21.True or false: “the longest spans of all” is a suspension bridge. (a) False (b) True
22. 22.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a wooden plank 5 N, sandpaper 7 N, ice 2 N, a glass sheet 4 N. Which surface gave the least friction? (a) a glass sheet (b) sandpaper (c) a wooden plank (d) ice
23. 23.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a glass sheet 4 N, a wooden plank 6 N, sandpaper 10 N, ice 2 N. Which surface gave the least friction? (a) a wooden plank (b) a glass sheet (c) sandpaper (d) ice
24. 24.⚖️ Which class of lever is a seesaw? (a) class 3 (b) class 2 (c) class 1
25. 25.🪢 A stage stands on 5 identical legs and each leg is squeezed with 825 N. What is the total load on the stage, in newtons?
26. 26.🔍 Which is the odd one out? (a) guess, do not measure (b) repeat each test (c) use the same load (d) record every result
27. 27.📋 For a model bridge challenge, is “roll at least 2 metres” a constraint or a criterion? (a) a constraint (b) a criterion
28. 28.⚙️ Which simple machine is a nutcracker? (a) screw (b) wheel and axle (c) wedge (d) lever
29. 29.🔍 Which is the odd one out? (a) powder on a carrom board (b) a wheel on ball bearings (c) a smooth steel slide (d) a box pushed on carpet
30. 30.🏋️ Can a simple machine reduce the work done? (a) only on Mondays (b) no, work stays the same (c) yes, always (d) yes, by half
31. 31.True or false: “tall towers hold cables” is a beam bridge. (a) False (b) True
32. 32.Which of these is a suspension bridge? (a) good for short gaps (b) a rope bridge in hills (c) a log across a stream (d) the simplest bridge
33. 33.🧑‍🔧 Which branch of engineering works on aeroplanes and rockets? (a) computer (b) aerospace (c) chemical (d) civil
34. 34.True or false: ocean wave energy is a renewable energy source. (a) False (b) True
35. 35.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
36. 36.🔺 Why can an arch carry heavy loads? (a) it is hollow (b) it bends easily (c) it works in compression (d) it is very light
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 400 g, design B held 300 g and design C held 350 g. Which design was the strongest? (a) design C (b) design B (c) design A
38. 38.True or false: a chemical engineer runs a fertiliser plant. (a) True (b) False
39. 39.🤝 How do engineers share a design with others? (a) only talking fast (b) clear labelled sketches (c) no drawings at all (d) secret notes
40. 40.True or false: powder on a carrom board gives more friction. (a) True (b) False

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