Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 42 · 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.🏚️ What do engineers use to test models of buildings for earthquakes? (a) a microscope (b) a telescope (c) a shake table (d) a fridge
2. 2.💪 In a tug of war, one team pulls left with 40 N and the other pulls right with 30 N. What is the size of the net force, in newtons?
3. 3.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
4. 4.🔍 Which is the odd one out? (a) record every result (b) use the same load (c) test it only once (d) change only one thing
5. 5.Which of these uses triangles? (a) a plank over a drain (b) a curved stone doorway (c) a bicycle frame (d) an old stone bridge
6. 6.🪢 Tension or compression: a tall bridge tower? (a) tension (b) compression
7. 7.📋 Criteria are … (a) the team names (b) the tools you use (c) the limits on money (d) goals a design must meet
8. 8.📐 On a plan, 1 cm stands for 20 m. A real bridge is 240 m long. How long is it on the plan, in centimetres?
9. 9.⚖️ A lever bar balances. The load is ? N at 10 cm from the fulcrum. The effort is 40 N at 50 cm from the fulcrum on the other side. What is the missing force in newtons?
10. 10.⚖️ Along a straight bar, measured from the left end, the effort is at 30 cm, the fulcrum at 60 cm and the load at 0 cm. Which class of lever is it? (a) class 2 (b) class 1 (c) class 3
11. 11.💪 In which unit do we measure force? (a) second (s) (b) metre (m) (c) litre (L) (d) newton (N)
12. 12.📐 On a plan, 1 cm stands for 5 m. A real bridge is 20 m long. How long is it on the plan, in centimetres?
13. 13.🏚️ Does fitting rubber base pads make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
14. 14.⚖️ In a class 3 lever, what is in the middle? (a) the pulley (b) the effort (c) the load (d) the fulcrum
15. 15.🦺 What protects your eyes when sawing or drilling? (a) safety goggles (b) nothing (c) sunglasses (d) a cap
16. 16.True or false: closing a drawer is a push. (a) True (b) False
17. 17.🔺 A frame shaped like a square is made of straws joined by loose pins, with 0 corner-to-corner braces. Is it rigid or wobbly? (a) wobbly (b) rigid
18. 18.True or false: a movable pulley halves the effort. (a) False (b) True
19. 19.True or false: “stand in a fan breeze” is a criterion (a goal). (a) False (b) True
20. 20.♻️ Is sunlight a renewable or a non-renewable energy source? (a) renewable (b) non-renewable
21. 21.📋 Your team’s budget is ₹28. You must buy one roll of tape for ₹10. Straws cost ₹2 each. What is the greatest number of straws you can buy?
22. 22.🛞 Why are tyres made with deep treads? (a) to go slower (b) to grip the road (c) to look nice (d) to save rubber
23. 23.🏚️ Why are flexible joints good in an earthquake? (a) they are cheap (b) they bend, not break (c) they stop shaking (d) they look nice
24. 24.🤝 Why do engineers work in teams? (a) to argue more (b) to finish nothing (c) many skills and ideas (d) to work alone
25. 25.📋 For a model bridge challenge, is “finish in 40 minutes” a constraint or a criterion? (a) a criterion (b) a constraint
26. 26.⚖️ A seesaw balances. Kabir (? N) sits 4 m from the pivot on one side; Zoya (760 N) sits 3 m from the pivot on the other side. What is the missing weight in newtons?
27. 27.🏚️ Three solid model towers are made of the same material. Tower A is 10 cm tall on a 10 cm wide base, tower B is 60 cm tall on a 30 cm base and tower C is 40 cm tall on a 10 cm base. Which is the hardest to tip over? (a) tower C (b) tower A (c) tower B
28. 28.🔍 Which is the odd one out? (a) keep ice for 1 hour (b) carry 10 coins (c) lift a cup of water (d) fit on a school desk
29. 29.📋 Criterion: the model bridge must hold at least 600 g. In the test it held 500 g. Does it meet the criterion? (a) Yes (b) No
30. 30.What does the builder do? (a) shares out the jobs (b) collects the supplies (c) cuts and joins parts (d) keeps the team on track
31. 31.🧪 A paper bridge was tested three times. It held 260 g, 170 g and 170 g. What is the mean (average) load it held, in grams?
32. 32.⚖️ A seesaw balances. Zoya (180 N) sits 1 m from the pivot on one side; Asha (? N) sits 1 m from the pivot on the other side. What is the missing weight in newtons?
33. 33.🏚️ Why is a wide base safer? (a) it is harder to tip over (b) it is taller (c) it is lighter (d) it is colourful
34. 34.🏚️ Does adding steel to concrete make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
35. 35.True or false: “tall towers hold cables” is a suspension bridge. (a) False (b) True
36. 36.True or false: a roof sheet needs a transparent material. (a) False (b) True
37. 37.True or false: an electrical engineer wires a new building. (a) False (b) True
38. 38.💪 Which force pulls everything towards the Earth? (a) magnetism (b) wind (c) friction (d) gravity
39. 39.🔺 One side of a straw bridge is a row of 11 triangles standing point-up and point-down in turn, each sharing a side with the next. How many straws does it use?
40. 40.🔍 Which is the odd one out? (a) a flagpole rope wheel (b) a crane hook block (c) a well-bucket rope wheel (d) a water tap handle

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