Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 53 · 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 kind of engineer designs car engines? (a) computer (b) aerospace (c) mechanical (d) civil
2. 2.🏚️ Where should heavy water tanks go in a quake zone? (a) low down (b) on a thin pole (c) on the very top (d) hanging outside
3. 3.True or false: a lintel over a door uses a beam. (a) True (b) False
4. 4.True or false: a yoga mat needs a flexible material. (a) False (b) True
5. 5.🏋️ A machine lifts a load of 950 N when you push with 190 N. What is its mechanical advantage (MA)?
6. 6.🤝 Is it good or poor teamwork to ignore the team plan? (a) poor teamwork (b) good teamwork
7. 7.True or false: a mechanical engineer designs power lines. (a) True (b) False
8. 8.📋 For a model bridge challenge, is “keep ice for 1 hour” a constraint or a criterion? (a) a criterion (b) a constraint
9. 9.🛞 Friction acts … (a) only upwards (b) with the motion (c) against the motion (d) only on ice
10. 10.🦺 In the workshop, is it safe to use a cracked tool? (a) safe (b) not safe
11. 11.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) it looks busy (d) to get reliable results
12. 12.🔍 Which is the odd one out? (a) hide a failed test (b) use the same load (c) record every result (d) measure the same way
13. 13.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a carpet 7 N, sandpaper 8 N, a glass sheet 2 N, a wooden plank 6 N. How many newtons more were needed on sandpaper than on a glass sheet?
14. 14.True or false: a coral reef is made by engineers. (a) True (b) False
15. 15.🌉 In a suspension bridge, the main cables are in … (a) tension (b) compression (c) no force (d) friction
16. 16.🧱 Which material is best for a cooking pot handle? (a) wood or plastic (b) copper (c) aluminium (d) iron
17. 17.Which of these is a wheel and axle? (a) a jar lid (b) a door stopper (c) a knife edge (d) a steering wheel
18. 18.True or false: “stones squeezed together” is an arch bridge. (a) False (b) True
19. 19.🪝 A load of 920 N hangs from a pulley system in which 4 rope sections hold up the load. What effort is needed, in newtons? (ideal pulleys)
20. 20.🌉 A beam bridge is 40 m long. Piers split it into equal spans of 20 m. How many spans are there?
21. 21.📐 A model car is drawn so that 1 cm stands for 10 cm. The car is 4 cm long in the drawing. How long is the real car, in centimetres?
22. 22.Which of these happens in the Imagine step? (a) follow the plan to build (b) think of wild ideas (c) make a prototype (d) draw a labelled diagram
23. 23.📋 For a model bridge challenge, is “lift a cup of water” a constraint or a criterion? (a) a criterion (b) a constraint
24. 24.🔍 Which is the odd one out? (a) a dam (b) a waterfall (c) a bridge (d) a satellite
25. 25.True or false: to use a new load each time is good testing. (a) False (b) True
26. 26.True or false: a brick at a wall base is in tension (pulled). (a) True (b) False
27. 27.Which of these happens in the Imagine step? (a) measure its performance (b) dream up possible fixes (c) follow the plan to build (d) build the model
28. 28.🔍 Which is the odd one out? (a) run while holding tools (b) cut away from your body (c) let adults use hot glue (d) clamp wood before sawing
29. 29.Which of these is a beam bridge? (a) a flat deck on piers (b) stones squeezed together (c) cables tied down at ends (d) a curve under the deck
30. 30.🔺 One side of a straw bridge is a row of 11 triangles standing point-up and point-down in turn, each sharing a side with the next. How many straws does it use?
31. 31.♻️ Which energy source will never run out? (a) petrol (b) sunlight (c) coal (d) diesel
32. 32.Which of these needs an electrical conductor? (a) a switch contact (b) a car seat belt (c) an oven glove (d) a raincoat
33. 33.⚖️ Which class of lever is a beam balance? (a) class 3 (b) class 1 (c) class 2
34. 34.🪢 A stage stands on 4 identical legs and each leg is squeezed with 900 N. What is the total load on the stage, in newtons?
35. 35.🔍 Which is the odd one out? (a) cut away from your body (b) let adults use hot glue (c) play near a moving drill (d) wear safety goggles
36. 36.🔄 In which step do engineers draw a labelled diagram? (a) Improve (b) Plan (c) Ask (d) Test
37. 37.🪝 A winch has a wheel of radius 40 cm and an axle of radius 5 cm. What effort on the wheel lifts a 240 N bucket on the axle, in newtons? (ideal)
38. 38.⚖️ Along a straight bar, measured from the left end, the effort is at 70 cm, the fulcrum at 10 cm and the load at 30 cm. Which class of lever is it? (a) class 1 (b) class 3 (c) class 2
39. 39.🪢 Tension or compression: a suspension cable? (a) compression (b) tension
40. 40.True or false: a movable pulley needs effort = load. (a) False (b) True

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