Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 434 · 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 bag has a mass of 19 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
2. 2.Which of these needs a flexible material? (a) a switch contact (b) a roof sheet (c) a hair band (d) a boat hull
3. 3.Which of these is caused by magnetic force? (a) a river flows downhill (b) an apple falls down (c) a magnet picks up pins (d) pedalling a cycle
4. 4.⚖️ Along a straight bar, measured from the left end, the effort is at 50 cm, the fulcrum at 40 cm and the load at 30 cm. Which class of lever is it? (a) class 3 (b) class 2 (c) class 1
5. 5.💪 In a tug of war, one team pulls left with 40 N and the other pulls right with 10 N. What is the size of the net force, in newtons?
6. 6.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
7. 7.📋 Constraint: the tower must be no taller than 50 cm. The team’s tower is 44 cm tall. Is it within the constraint? (a) No (b) Yes
8. 8.Which need does a bridge meet? (a) reach a top floor fast (b) go through a mountain (c) cross a wide river (d) store water for summer
9. 9.🤝 Is it good or poor teamwork to own up to a mistake? (a) poor teamwork (b) good teamwork
10. 10.🔄 In which step do engineers draw a labelled diagram? (a) Plan (b) Test (c) Ask (d) Improve
11. 11.True or false: a broom when sweeping is a class 1 lever (fulcrum in the middle). (a) False (b) True
12. 12.🧪 What is a prototype? (a) an early test model (b) a broken part (c) a sales poster (d) the final product
13. 13.Which of these uses a beam? (a) an old stone bridge (b) an electric pylon (c) a planetarium roof (d) a slab over a canal
14. 14.🔍 Which is the odd one out? (a) change only one thing (b) change lots at once (c) repeat each test (d) record every result
15. 15.Which of these is a beam bridge? (a) the longest spans of all (b) a flat deck on piers (c) stones squeezed together (d) deck hangs from cables
16. 16.📋 Your team’s budget is ₹31. You must buy one roll of tape for ₹10. Straws cost ₹1 each. What is the greatest number of straws you can buy?
17. 17.True or false: a tea flask lining needs a heat insulator. (a) False (b) True
18. 18.🔍 Which is the odd one out? (a) use at most 20 straws (b) carry 10 coins (c) hold up 500 g (d) float for 1 minute
19. 19.🛠️ Which of these is a problem an engineer could solve? (a) a lost cricket match (b) a boring story (c) a road that floods (d) a sad song
20. 20.What does the builder do? (a) writes down results (b) keeps the team on track (c) puts the model together (d) runs the tests
21. 21.🧱 Which material is best for the core of an electric wire? (a) rubber (b) copper (c) glass (d) wood
22. 22.🧱 Which property matters most for a car windscreen? (a) flexible (b) transparent (c) electrical conductor (d) heat insulator
23. 23.🪝 More rope sections holding a load means … (a) less effort needed (b) more effort needed (c) no change (d) the load floats
24. 24.🔺 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
25. 25.Which of these is a beam bridge? (a) a curve under the deck (b) pushes out on its ends (c) good for short gaps (d) deck hangs from cables
26. 26.🧑‍🔧 Which kind of engineer lays out a highway? (a) electrical (b) computer (c) chemical (d) civil
27. 27.🤝 In a design team, who keeps the design notes? (a) recorder (b) builder (c) team leader (d) materials manager
28. 28.💪 Is pressing a doorbell a push or a pull? (a) a pull (b) a push
29. 29.🤝 A teammate’s idea seems odd. What should you do first? (a) walk away (b) laugh at it (c) listen and ask why (d) ignore it
30. 30.🔍 Which is the odd one out? (a) roll at least 2 metres (b) fit on a school desk (c) float for 1 minute (d) hold up 500 g
31. 31.⚖️ Which class of lever is your forearm? (a) class 2 (b) class 1 (c) class 3
32. 32.Which job is a spanner for? (a) turn a screw (b) measure a long length (c) tighten a nut (d) grip and bend wire
33. 33.💪 A cart is pulled to the right with 85 N and to the left with 85 N. Which way does the net force act? (a) no net force (b) to the left (c) to the right
34. 34.Which of these is a beam bridge? (a) pushes out on its ends (b) the longest spans of all (c) stones squeezed together (d) a log across a stream
35. 35.🔢 To follow the engineering design process, which is the LAST step? (a) Plan (b) Improve (c) Imagine (d) Ask
36. 36.🛞 Is friction helpful or a problem here: gripping a cricket bat? (a) a problem (b) helpful
37. 37.🔄 Which design-process step is it to define the problem? (a) Ask (b) Imagine (c) Plan (d) Test
38. 38.True or false: to build the model is the Create step. (a) True (b) False
39. 39.⚖️ A seesaw balances. Meena (? N) sits 2 m from the pivot on one side; Ravi (360 N) sits 3 m from the pivot on the other side. What is the missing weight in newtons?
40. 40.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: ice 2 N, a wooden plank 6 N, a carpet 7 N, sandpaper 9 N. Which surface gave the least friction? (a) a wooden plank (b) ice (c) a carpet (d) sandpaper

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