Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 684 · 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.🔍 Which is the odd one out? (a) record every result (b) use a new load each time (c) use the same load (d) measure the same way
2. 2.💪 Is opening a drawer a push or a pull? (a) a push (b) a pull
3. 3.🔺 A flat frame has 4 straight sides joined by loose pins at the corners. What is the least number of corner-to-corner braces needed to make it rigid?
4. 4.🧱 Is iron an electrical conductor or an insulator? (a) a conductor (b) an insulator
5. 5.Which need does a solar panel meet? (a) reach a top floor fast (b) see very tiny things (c) make power from sunlight (d) carry many people far
6. 6.📋 Criterion: the model bridge must hold at least 400 g. In the test it held 250 g. Does it meet the criterion? (a) Yes (b) No
7. 7.🔍 Which is the odd one out? (a) a hanging lamp chain (b) a stretched rubber band (c) a tent guy rope (d) a squeezed spring
8. 8.🔍 Which is the odd one out? (a) a rainbow (b) a bridge (c) a ceiling fan (d) a lift
9. 9.True or false: a swing chain is in tension (pulled). (a) False (b) True
10. 10.🪝 A winch has a wheel of radius 15 cm and an axle of radius 5 cm. What effort on the wheel lifts a 570 N bucket on the axle, in newtons? (ideal)
11. 11.🔺 A flat frame has 5 straight sides joined by loose pins at the corners. What is the least number of corner-to-corner braces needed to make it rigid?
12. 12.Which job does a biomedical engineer do? (a) designs a gearbox (b) designs electric motors (c) builds rockets (d) designs knee implants
13. 13.📐 A model car is drawn so that 1 cm stands for 20 cm. The car is 10 cm long in the drawing. How long is the real car, in centimetres?
14. 14.🔍 Which is the odd one out? (a) a tyre with deep treads (b) a smooth steel slide (c) a rough doormat (d) chalk on a gym bar
15. 15.🧱 Which property matters most for an oven glove? (a) heat insulator (b) waterproof (c) flexible (d) electrical conductor
16. 16.🧑‍🔧 Which kind of engineer designs aeroplane wings? (a) chemical (b) biomedical (c) aerospace (d) civil
17. 17.🪢 Compression is a force that … (a) cools things (b) pulls or stretches (c) pushes or squeezes (d) makes light
18. 18.📋 For a model bridge challenge, is “stand in a fan breeze” a constraint or a criterion? (a) a constraint (b) a criterion
19. 19.📐 A beam is 390 cm long. How long is it in metres? =
20. 20.🪝 Fixed or movable pulley: which one only changes direction? (a) a movable pulley (b) a fixed pulley
21. 21.🤝 In a design team, who collects the supplies? (a) team leader (b) recorder (c) materials manager (d) builder
22. 22.🔺 A frame shaped like a square is made of straws joined by loose pins, with 1 corner-to-corner brace. Is it rigid or wobbly? (a) wobbly (b) rigid
23. 23.🏋️ A machine lifts a load of 900 N when you push with 150 N. What is its mechanical advantage (MA)?
24. 24.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 150 g and design C held 250 g. Which design was the weakest? (a) design A (b) design B (c) design C
25. 25.🪝 Fixed or movable pulley: which one needs effort = load? (a) a fixed pulley (b) a movable pulley
26. 26.Which of these is a suspension bridge? (a) pushes out on its ends (b) cables tied down at ends (c) a flat deck on piers (d) good for short gaps
27. 27.🌉 Which bridge type: “cables tied down at ends”? (a) arch bridge (b) suspension bridge (c) beam bridge
28. 28.📐 A beam is 740 cm long. How long is it in metres? =
29. 29.Which of these happens in the Imagine step? (a) ask who will use it (b) make a prototype (c) build the model (d) brainstorm many ideas
30. 30.⚖️ A lever bar balances. The load is ? N at 10 cm from the fulcrum. The effort is 10 N at 60 cm from the fulcrum on the other side. What is the missing force in newtons?
31. 31.⚙️ A screw is really … (a) a kind of wheel (b) a bent lever (c) a ramp wrapped round (d) a tiny pulley
32. 32.📋 Criterion: the model bridge must hold at least 500 g. In the test it held 650 g. Does it meet the criterion? (a) No (b) Yes
33. 33.♻️ Reduce, reuse or recycle: refill a water bottle? (a) recycle (b) reduce (c) reuse
34. 34.💪 A box weighs 590 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
35. 35.🌉 In a suspension bridge, the main cables are in … (a) no force (b) tension (c) friction (d) compression
36. 36.🪢 A sign weighing 150 N hangs from 3 identical vertical ropes that share the load equally. What is the tension in each rope, in newtons?
37. 37.🪝 A well winch has a handle (wheel) of radius 8 cm turning an axle of radius 2 cm. What is its mechanical advantage (MA)?
38. 38.📐 On a plan, 1 cm stands for 2 m. A real bridge is 38 m long. How long is it on the plan, in centimetres?
39. 39.⚖️ Going along a lever from one end to the other, the order is: effort, load, fulcrum. Which class of lever is it? (a) class 2 (b) class 1 (c) class 3
40. 40.🧑‍🔧 Which kind of engineer designs satellites? (a) mechanical (b) computer (c) aerospace (d) civil

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