Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 463 · 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.⚖️ A lever bar balances. The load is ? N at 50 cm from the fulcrum. The effort is 500 N at 90 cm from the fulcrum on the other side. What is the missing force in newtons?
2. 2.🔺 Which strong shape does a planetarium roof use? (a) triangle (b) dome (c) beam (d) arch
3. 3.🏋️ A 13 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
4. 4.🏚️ Why is a wide base safer? (a) it is harder to tip over (b) it is colourful (c) it is taller (d) it is lighter
5. 5.🏋️ A force of 290 N did 1740 J of work. How many metres did the object move?
6. 6.Which of these is in tension (pulled)? (a) a tall bridge tower (b) a swing chain (c) a brick at a wall base (d) a temple column
7. 7.True or false: to cut towards your hand is safe. (a) False (b) True
8. 8.Which of these is in compression (pushed)? (a) a stretched rubber band (b) a swing chain (c) a stone in an arch (d) a suspension cable
9. 9.💪 Is drawing up a well bucket a push or a pull? (a) a pull (b) a push
10. 10.💪 Two children push a box to the right, one with 30 N and the other with 35 N. What is the net (total) force on the box, in newtons?
11. 11.True or false: “roll at least 2 metres” is a constraint (a limit). (a) True (b) False
12. 12.Which of these is caused by gravity? (a) an apple falls down (b) rubbing hands warms them (c) brakes stop a bicycle (d) a rolling ball slows
13. 13.📐 A beam is 640 cm long. How long is it in metres? =
14. 14.Which of these uses an arch? (a) a roof truss (b) a truss bridge side (c) a fort gateway (d) a slab over a canal
15. 15.🪢 A stage stands on 4 identical legs and each leg is squeezed with 575 N. What is the total load on the stage, in newtons?
16. 16.🏋️ Mechanical advantage (MA) = … (a) effort ÷ load (b) load × effort (c) load ÷ effort (d) load + effort
17. 17.True or false: a biomedical engineer designs knee implants. (a) True (b) False
18. 18.🛞 Is friction helpful or a problem here: a door hinge squeaking? (a) helpful (b) a problem
19. 19.🌉 In a stone arch bridge, the stones are in … (a) friction (b) no force (c) compression (d) tension
20. 20.True or false: to carry scissors closed is not safe. (a) True (b) False
21. 21.⚖️ A lever bar balances. The load is 270 N at ? cm from the fulcrum. The effort is 180 N at 30 cm from the fulcrum on the other side. What is the missing distance in centimetres?
22. 22.🏋️ Work is done when a force moves something … (a) through a distance (b) very slowly (c) only upwards (d) without moving it
23. 23.♻️ Which energy source will never run out? (a) diesel (b) sunlight (c) petrol (d) coal
24. 24.🔍 Which is the odd one out? (a) fit on a school desk (b) keep ice for 1 hour (c) lift a cup of water (d) hold up 500 g
25. 25.📐 A model car is drawn so that 1 cm stands for 40 cm. The car is 9 cm long in the drawing. How long is the real car, in centimetres?
26. 26.Which of these is a pulley? (a) a knife edge (b) a well-bucket rope wheel (c) the tip of a nail (d) a bottle cap
27. 27.True or false: a water filter is found in nature. (a) True (b) False
28. 28.Which of these is a beam bridge? (a) good for short gaps (b) cables tied down at ends (c) a rope bridge in hills (d) deck hangs from cables
29. 29.True or false: a dam helps people talk to someone far away. (a) False (b) True
30. 30.🤝 In a design team, who runs the tests? (a) builder (b) materials manager (c) recorder (d) tester
31. 31.🏋️ A 17 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
32. 32.True or false: a movable pulley only changes direction. (a) False (b) True
33. 33.🪝 Fixed or movable pulley: which one makes you pull 2× rope? (a) a movable pulley (b) a fixed pulley
34. 34.⚙️ Which simple machine is a seesaw? (a) screw (b) inclined plane (c) lever (d) pulley
35. 35.⚖️ Which class of lever is a crowbar? (a) class 3 (b) class 2 (c) class 1
36. 36.🔍 Which is the odd one out? (a) steel (b) brass (c) iron (d) cotton cloth
37. 37.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
38. 38.🪝 Fixed or movable pulley: which one rises with the load? (a) a fixed pulley (b) a movable pulley
39. 39.Which of these happens in the Improve step? (a) make a prototype (b) think of wild ideas (c) measure its performance (d) make it better, retest
40. 40.🔍 Which is the odd one out? (a) test it only once (b) repeat each test (c) record every result (d) use the same load

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