Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 766 · 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.🛠️ People need to store water for summer. Which invention helps? (a) a lift (b) a microscope (c) a dam (d) a train
2. 2.🔺 Which shape keeps its shape best when its corners are pinned? (a) triangle (b) rectangle (c) hexagon (d) square
3. 3.📐 A model car is drawn so that 1 cm stands for 10 cm. The car is 8 cm long in the drawing. How long is the real car, in centimetres?
4. 4.📋 Constraint: the tower must be no taller than 90 cm. The team’s tower is 84 cm tall. Is it within the constraint? (a) No (b) Yes
5. 5.Which of these needs a waterproof material? (a) an umbrella cover (b) a hair band (c) a spectacle lens (d) a skipping rope
6. 6.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) read the challenge rules (b) build it with straws
7. 7.Which of these is in tension (pulled)? (a) a stone in an arch (b) a brick at a wall base (c) a temple column (d) a suspension cable
8. 8.🔢 To follow the engineering design process, which is the FIRST step? (a) Plan (b) Imagine (c) Ask (d) Improve
9. 9.Which job does an aerospace engineer do? (a) plans a power grid (b) lays out a highway (c) designs aeroplane wings (d) designs knee implants
10. 10.🔺 Which strong shape does a fort gateway use? (a) dome (b) beam (c) triangle (d) arch
11. 11.Which of these is found in nature? (a) a river (b) a mobile phone (c) a railway track (d) a water filter
12. 12.Which need does a lift meet? (a) carry many people far (b) reach a top floor fast (c) make power from sunlight (d) see very tiny things
13. 13.⚖️ Along a straight bar, measured from the left end, the effort is at 10 cm, the fulcrum at 50 cm and the load at 40 cm. Which class of lever is it? (a) class 3 (b) class 2 (c) class 1
14. 14.What does the materials manager do? (a) cuts and joins parts (b) keeps the team on track (c) shares out the jobs (d) tracks what is used up
15. 15.🏋️ A 15 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
16. 16.🏚️ Three solid model towers are made of the same material. Tower A is 280 cm tall on a 40 cm wide base, tower B is 120 cm tall on a 40 cm base and tower C is 50 cm tall on a 10 cm base. Which is the hardest to tip over? (a) tower B (b) tower A (c) tower C
17. 17.⚖️ Going along a lever from one end to the other, the order is: load, fulcrum, effort. Which class of lever is it? (a) class 1 (b) class 3 (c) class 2
18. 18.Which of these is in compression (pushed)? (a) a tent guy rope (b) a tug of war rope (c) a hanging lamp chain (d) a pillar under a roof
19. 19.True or false: a computer engineer designs knee implants. (a) True (b) False
20. 20.🔢 To follow the engineering design process, what comes right after “Ask”? (a) Plan (b) Test (c) Create (d) Imagine
21. 21.🪝 What does a single fixed pulley change? (a) the colour of rope (b) the direction of pull (c) gravity (d) the size of the load
22. 22.True or false: a seashell is made by engineers. (a) True (b) False
23. 23.♻️ A sustainable design … (a) wastes water (b) protects the future (c) uses the most plastic (d) lasts one day
24. 24.🌉 Which bridge type: “the simplest bridge”? (a) suspension bridge (b) arch bridge (c) beam bridge
25. 25.🏋️ Mechanical advantage (MA) = … (a) load ÷ effort (b) load × effort (c) effort ÷ load (d) load + effort
26. 26.🪝 A wheel and axle is a big wheel fixed to … (a) a loose rope (b) a smaller rod (axle) (c) a flat ramp (d) a sharp wedge
27. 27.True or false: “the longest spans of all” is a suspension bridge. (a) True (b) False
28. 28.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a glass sheet 4 N, a carpet 7 N, sandpaper 11 N, ice 2 N. Which surface gave the most friction? (a) ice (b) sandpaper (c) a carpet (d) a glass sheet
29. 29.⚖️ A seesaw balances. Arjun (? N) sits 2 m from the pivot on one side; Asha (240 N) sits 3 m from the pivot on the other side. What is the missing weight in newtons?
30. 30.🧑‍🔧 Which branch of engineering designs buildings, roads and bridges? (a) civil (b) computer (c) biomedical (d) chemical
31. 31.True or false: an electrical engineer designs a paint factory. (a) False (b) True
32. 32.🦺 In the workshop, is it safe to tie back long hair? (a) not safe (b) safe
33. 33.🔍 Which is the odd one out? (a) hold up 500 g (b) spend at most ₹100 (c) keep ice for 1 hour (d) float for 1 minute
34. 34.🔄 After testing, a design does not work well. What comes next? (a) Ask (b) give up (c) Improve (d) Imagine
35. 35.🧱 Which material is best for the core of an electric wire? (a) copper (b) glass (c) rubber (d) wood
36. 36.🤝 Is it good or poor teamwork to share the work fairly? (a) poor teamwork (b) good teamwork
37. 37.True or false: a civil engineer designs a metro tunnel. (a) True (b) False
38. 38.Which of these happens in the Improve step? (a) redesign after testing (b) find the limits (c) define the problem (d) check it against goals
39. 39.🔺 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) wobbly (b) rigid
40. 40.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 120 g. How many more grams did it hold?

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