Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 196 · 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.True or false: to record every result is good testing. (a) False (b) True
2. 2.🔍 Which is the odd one out? (a) brass (b) dry wood (c) aluminium (d) graphite
3. 3.⚙️ Which simple machine is a well winch handle? (a) wheel and axle (b) screw (c) pulley (d) inclined plane
4. 4.🏚️ Three solid model towers are made of the same material. Tower A is 120 cm tall on a 40 cm wide base, tower B is 100 cm tall on a 20 cm base and tower C is 60 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower A (b) tower B (c) tower C
5. 5.🪝 A well winch has a handle (wheel) of radius 7 cm turning an axle of radius 1 cm. What is its mechanical advantage (MA)?
6. 6.True or false: a swing chain is in compression (pushed). (a) True (b) False
7. 7.🛠️ People need to make water safe to drink. Which invention helps? (a) a train (b) a water filter (c) a microscope (d) a tunnel
8. 8.🪝 Fixed or movable pulley: which one is on a flagpole top? (a) a movable pulley (b) a fixed pulley
9. 9.True or false: a computer engineer plans a dam. (a) False (b) True
10. 10.📐 A beam is 810 cm long. How long is it in metres? =
11. 11.True or false: a nutcracker is a class 2 lever (load in the middle). (a) False (b) True
12. 12.♻️ A school bench is made from 150 recycled plastic bottles. How many benches can be made from 600 bottles?
13. 13.⚖️ Which class of lever is a pair of kitchen tongs? (a) class 1 (b) class 2 (c) class 3
14. 14.🪝 A well winch has a handle (wheel) of radius 6 cm turning an axle of radius 1 cm. What is its mechanical advantage (MA)?
15. 15.True or false: a mechanical engineer designs car engines. (a) False (b) True
16. 16.⚙️ How many simple machines are there in the usual list? (a) 12 (b) 6 (c) 10 (d) 3
17. 17.📐 A beam is 730 cm long. How long is it in metres? =
18. 18.📐 A beam is 610 cm long. How long is it in metres? =
19. 19.⚖️ A lever bar balances. The load is 90 N at 20 cm from the fulcrum. The effort is 60 N at ? cm from the fulcrum on the other side. What is the missing distance in centimetres?
20. 20.🧱 Which property matters most for a car seat belt? (a) transparent (b) flexible (c) waterproof (d) heat insulator
21. 21.🔄 In which step do engineers draw a labelled diagram? (a) Ask (b) Improve (c) Test (d) Plan
22. 22.🪝 A winch has a wheel of radius 24 cm and an axle of radius 3 cm. What effort on the wheel lifts a 1520 N bucket on the axle, in newtons? (ideal)
23. 23.🔍 Which is the odd one out? (a) repeat each test (b) change lots at once (c) record every result (d) use the same load
24. 24.🔍 Which is the odd one out? (a) leaving out steel bars (b) raising heavy tanks high (c) using a heavy roof (d) keeping a simple shape
25. 25.Which of these happens in the Ask step? (a) make it better, retest (b) find the limits (c) build the model (d) list the materials
26. 26.🦺 In the workshop, is it safe to put tools back after use? (a) safe (b) not safe
27. 27.🧱 Is dry wood an electrical conductor or an insulator? (a) an insulator (b) a conductor
28. 28.🔺 One side of a straw bridge is a row of 5 triangles standing point-up and point-down in turn, each sharing a side with the next. How many straws does it use?
29. 29.Which of these uses triangles? (a) a curved stone doorway (b) a crane arm (c) an igloo (d) a fort gateway
30. 30.True or false: to list the materials is the Plan step. (a) False (b) True
31. 31.🧪 A paper bridge was tested three times. It held 280 g, 270 g and 290 g. What is the mean (average) load it held, in grams?
32. 32.💪 Is drawing up a well bucket a push or a pull? (a) a push (b) a pull
33. 33.🏋️ A machine lifts a load of 120 N when you push with 40 N. What is its mechanical advantage (MA)?
34. 34.⚖️ What is the pivot point of a lever called? (a) the axle (b) the effort (c) the fulcrum (d) the load
35. 35.⚖️ Along a straight bar, measured from the left end, the effort is at 70 cm, the fulcrum at 40 cm and the load at 30 cm. Which class of lever is it? (a) class 1 (b) class 3 (c) class 2
36. 36.🔄 After testing, a design does not work well. What comes next? (a) give up (b) Ask (c) Imagine (d) Improve
37. 37.True or false: a biomedical engineer designs hearing aids. (a) False (b) True
38. 38.📐 On a plan, 1 cm stands for 2 m. A real bridge is 16 m long. How long is it on the plan, in centimetres?
39. 39.🔧 Which tool would you use to check a shelf is level? (a) a spirit level (b) a protractor (c) a tape measure (d) a hammer
40. 40.📋 Constraint: the tower must be no taller than 60 cm. The team’s tower is 56 cm tall. Is it within the constraint? (a) No (b) Yes

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