Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 504 · 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.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) load it with coins (b) strengthen the weak part
2. 2.🪝 Fixed or movable pulley: which one hangs on the rope loop? (a) a movable pulley (b) a fixed pulley
3. 3.🔢 To follow the engineering design process, what comes right after “Imagine”? (a) Test (b) Plan (c) Ask (d) Create
4. 4.💪 Is plucking a mango a push or a pull? (a) a push (b) a pull
5. 5.⚖️ Along a straight bar, measured from the left end, the effort is at 20 cm, the fulcrum at 40 cm and the load at 50 cm. Which class of lever is it? (a) class 1 (b) class 2 (c) class 3
6. 6.⚖️ A seesaw balances. Zoya (360 N) sits 4 m from the pivot on one side; Asha (? N) sits 3 m from the pivot on the other side. What is the missing weight in newtons?
7. 7.💪 A cart is pulled to the right with 55 N and to the left with 70 N. Which way does the net force act? (a) no net force (b) to the left (c) to the right
8. 8.🔺 A frame shaped like a pentagon is made of straws joined by loose pins, with 1 corner-to-corner brace. Is it rigid or wobbly? (a) rigid (b) wobbly
9. 9.True or false: a mechanical engineer designs a metro tunnel. (a) False (b) True
10. 10.🪝 Fixed or movable pulley: which one needs effort = load? (a) a movable pulley (b) a fixed pulley
11. 11.Which job does a mechanical engineer do? (a) builds rockets (b) designs a gearbox (c) builds hospital scanners (d) plans a dam
12. 12.🧑‍🔧 Which branch of engineering works on aeroplanes and rockets? (a) chemical (b) civil (c) computer (d) aerospace
13. 13.True or false: coal is a renewable energy source. (a) True (b) False
14. 14.True or false: a boat hull needs an electrical conductor. (a) False (b) True
15. 15.🧪 A paper bridge was tested three times. It held 390 g, 350 g and 310 g. What is the mean (average) load it held, in grams?
16. 16.🧱 Which material is best for a window pane? (a) brick (b) wood (c) glass (d) steel
17. 17.⚖️ Turning effect = force × … (a) mass of fulcrum (b) distance from fulcrum (c) colour of bar (d) time taken
18. 18.🏚️ Three solid model towers are made of the same material. Tower A is 60 cm tall on a 20 cm wide base, tower B is 40 cm tall on a 10 cm base and tower C is 60 cm tall on a 30 cm base. Which is the hardest to tip over? (a) tower B (b) tower C (c) tower A
19. 19.💪 A bag has a mass of 16 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
20. 20.🪝 A pulley system lifts an 80 N load with an effort of 20 N. What is its mechanical advantage (MA)?
21. 21.🔧 Which tool would you use to measure a long length? (a) a screwdriver (b) a spirit level (c) a spanner (d) a tape measure
22. 22.Which of these is an arch bridge? (a) a flat deck on piers (b) the longest spans of all (c) a curve under the deck (d) cables tied down at ends
23. 23.True or false: a box pushed on carpet gives less friction. (a) False (b) True
24. 24.🤝 A team plans for 40 minutes, builds for 50 minutes and then tests for 5 minutes, one after another. How many minutes is that in all?
25. 25.True or false: a bicycle frame uses triangles. (a) True (b) False
26. 26.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to sell them at once (c) to decorate a room (d) to test ideas cheaply
27. 27.🤝 In a design team, who collects the supplies? (a) tester (b) materials manager (c) builder (d) team leader
28. 28.⚖️ A seesaw balances. Arjun (? N) sits 3 m from the pivot on one side; Ravi (390 N) sits 1 m from the pivot on the other side. What is the missing weight in newtons?
29. 29.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
30. 30.True or false: to skip writing results is good testing. (a) True (b) False
31. 31.📋 For a model bridge challenge, is “roll at least 2 metres” a constraint or a criterion? (a) a constraint (b) a criterion
32. 32.True or false: a solar panel helps people make power from sunlight. (a) False (b) True
33. 33.🏋️ Mechanical advantage (MA) = … (a) load × effort (b) load ÷ effort (c) effort ÷ load (d) load + effort
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 260 g and design C held 210 g. Which design was the weakest? (a) design C (b) design B (c) design A
35. 35.True or false: a pair of scissors is a class 1 lever (fulcrum in the middle). (a) True (b) False
36. 36.🔍 Which is the odd one out? (a) a tug of war rope (b) a brick at a wall base (c) a tent guy rope (d) a swing chain
37. 37.📋 Criteria are … (a) the team names (b) the tools you use (c) goals a design must meet (d) the limits on money
38. 38.🧱 Which property matters most for a spectacle lens? (a) transparent (b) heat insulator (c) waterproof (d) flexible
39. 39.Which of these is recycle (make new things)? (a) use a jar as a pen stand (b) give old books away (c) carry a cloth bag (d) melt cans into new cans
40. 40.True or false: a lift helps people reach a top floor fast. (a) False (b) True

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