Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 467 · 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 well winch has a handle (wheel) of radius 10 cm turning an axle of radius 5 cm. What is its mechanical advantage (MA)?
2. 2.🔺 A flat frame has 10 straight sides joined by loose pins at the corners. What is the least number of corner-to-corner braces needed to make it rigid?
3. 3.🪝 Fixed or movable pulley: which one hangs on the rope loop? (a) a fixed pulley (b) a movable pulley
4. 4.⚖️ Along a straight bar, measured from the left end, the effort is at 60 cm, the fulcrum at 40 cm and the load at 0 cm. Which class of lever is it? (a) class 3 (b) class 2 (c) class 1
5. 5.🧪 What is a prototype? (a) a broken part (b) the final product (c) an early test model (d) a sales poster
6. 6.🪝 Fixed or movable pulley: which one makes you pull 2× rope? (a) a movable pulley (b) a fixed pulley
7. 7.True or false: a bicycle frame uses an arch. (a) False (b) True
8. 8.♻️ A sustainable design … (a) wastes water (b) protects the future (c) lasts one day (d) uses the most plastic
9. 9.True or false: a bottle opener is a class 2 lever (load in the middle). (a) False (b) True
10. 10.Which of these makes a building less safe in earthquakes? (a) using a light roof (b) leaving out steel bars (c) adding cross bracing (d) keeping a simple shape
11. 11.True or false: to follow the plan to build is the Create step. (a) False (b) True
12. 12.📋 For a model bridge challenge, is “roll at least 2 metres” a constraint or a criterion? (a) a constraint (b) a criterion
13. 13.True or false: a chemical engineer wires a new building. (a) False (b) True
14. 14.🛠️ People need to reach a top floor fast. Which invention helps? (a) a fridge (b) a lift (c) a dam (d) a solar panel
15. 15.♻️ A project report has 58 pages. How many sheets of paper are needed if it is printed on both sides of each sheet?
16. 16.True or false: “good for short gaps” is a beam bridge. (a) False (b) True
17. 17.🌉 A beam bridge 280 m long rests on the two river banks and on piers in between, making equal spans of 35 m. How many piers are there?
18. 18.⚖️ In a class 2 lever, what is in the middle? (a) the load (b) the axle (c) the fulcrum (d) the effort
19. 19.🔺 A flat frame has 12 straight sides joined by loose pins at the corners. What is the least number of corner-to-corner braces needed to make it rigid?
20. 20.♻️ Which energy source will never run out? (a) sunlight (b) petrol (c) coal (d) diesel
21. 21.📐 A model car is drawn so that 1 cm stands for 10 cm. The car is 6 cm long in the drawing. How long is the real car, in centimetres?
22. 22.Which of these makes a building safer in earthquakes? (a) building tall and narrow (b) using a heavy roof (c) leaving out steel bars (d) adding cross bracing
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 320 g and design C held 370 g. Which design was the weakest? (a) design B (b) design C (c) design A
24. 24.📐 A model car is drawn so that 1 cm stands for 20 cm. The car is 4 cm long in the drawing. How long is the real car, in centimetres?
25. 25.Which of these needs a waterproof material? (a) a car seat belt (b) a water tank (c) a plug pin (d) an oven glove
26. 26.⚖️ A lever bar balances. The load is 700 N at ? cm from the fulcrum. The effort is 210 N at 100 cm from the fulcrum on the other side. What is the missing distance in centimetres?
27. 27.💪 Is plucking a mango a push or a pull? (a) a pull (b) a push
28. 28.🔍 Which is the odd one out? (a) play near a moving drill (b) cut towards your hand (c) tie back long hair (d) run while holding tools
29. 29.📐 On a plan, 1 cm stands for 2 m. A wall is 8 cm long on the plan. How long is the real wall, in metres?
30. 30.True or false: to brainstorm many ideas is the Imagine step. (a) False (b) True
31. 31.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
32. 32.🛠️ What does an engineer mainly do? (a) only paints pictures (b) designs useful solutions (c) grows crops (d) sells tickets
33. 33.🔍 Which is the odd one out? (a) a well-bucket rope wheel (b) a door stopper (c) a crane hook block (d) a flagpole rope wheel
34. 34.Which of these is made by engineers? (a) a mobile phone (b) a rainbow (c) a volcano (d) a seashell
35. 35.🤝 A team of 5 shares 30 equal jobs fairly. Each job takes 8 minutes. How many minutes does each person work?
36. 36.🔢 To follow the engineering design process, which comes first: “Ask” or “Imagine”? (a) Imagine (b) Ask
37. 37.True or false: to ask who will use it is the Ask step. (a) False (b) True
38. 38.True or false: a spectacle lens needs a transparent material. (a) True (b) False
39. 39.⚖️ Along a straight bar, measured from the left end, the effort is at 50 cm, the fulcrum at 10 cm and the load at 20 cm. Which class of lever is it? (a) class 2 (b) class 3 (c) class 1
40. 40.🪝 Fixed or movable pulley: which one is on a flagpole top? (a) a fixed pulley (b) a movable pulley

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