Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 145 · 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.🔍 Which is the odd one out? (a) a pillar under a roof (b) a bridge pier (c) a temple column (d) a hanging lamp chain
2. 2.🔢 To follow the engineering design process, which comes first: “Plan” or “Ask”? (a) Ask (b) Plan
3. 3.🔍 Which is the odd one out? (a) hold up 500 g (b) be under 30 cm tall (c) use at most 20 straws (d) finish in 40 minutes
4. 4.🪝 A winch has a wheel of radius 8 cm and an axle of radius 2 cm. What effort on the wheel lifts an 80 N bucket on the axle, in newtons? (ideal)
5. 5.🔍 Which is the odd one out? (a) graphite (b) aluminium (c) copper (d) glass
6. 6.💪 Which force is at work: a river flows downhill? (a) friction (b) magnetic force (c) gravity (d) muscular force
7. 7.⚙️ Which simple machine is the tip of a nail? (a) wheel and axle (b) inclined plane (c) lever (d) wedge
8. 8.Which job is a spirit level for? (a) make a hole in wood (b) tighten a nut (c) grip and bend wire (d) check a shelf is level
9. 9.True or false: having a wide base makes a building safer in earthquakes. (a) False (b) True
10. 10.🪢 Compression is a force that … (a) cools things (b) makes light (c) pulls or stretches (d) pushes or squeezes
11. 11.🛞 Why are tyres made with deep treads? (a) to grip the road (b) to look nice (c) to save rubber (d) to go slower
12. 12.🪝 A bucket weighing 270 N is lifted with a single fixed pulley at the top of a well. What effort is needed, in newtons? (ideal pulley, no friction)
13. 13.⚖️ A seesaw balances. Asha (? N) sits 2 m from the pivot on one side; Kabir (360 N) sits 2 m from the pivot on the other side. What is the missing weight in newtons?
14. 14.True or false: a window blind cord is a pulley. (a) True (b) False
15. 15.🔧 Which tool would you use to grip and bend wire? (a) pliers (b) a saw (c) a tape measure (d) a hand drill
16. 16.🧪 A paper bridge was tested three times. It held 220 g, 200 g and 180 g. What is the mean (average) load it held, in grams?
17. 17.🪝 A pulley system lifts a 600 N load with an effort of 300 N. What is its mechanical advantage (MA)?
18. 18.📋 A design meets every criterion but costs more than the budget. Is it acceptable? (a) only if it is red (b) no, it breaks a limit (c) yes, it works (d) yes, always
19. 19.Which of these is caused by friction? (a) an apple falls down (b) a fridge magnet sticks (c) a rolling ball slows (d) a compass needle turns
20. 20.True or false: “tall towers hold cables” is a suspension bridge. (a) False (b) True
21. 21.🔍 Which is the odd one out? (a) a satellite (b) a seashell (c) a mobile phone (d) a bicycle
22. 22.True or false: a microscope helps people reach a top floor fast. (a) False (b) True
23. 23.True or false: a water tank needs an electrical conductor. (a) True (b) False
24. 24.Which of these is a suspension bridge? (a) a curve under the deck (b) a log across a stream (c) a flat deck on piers (d) a rope bridge in hills
25. 25.True or false: a bridge helps people see very tiny things. (a) False (b) True
26. 26.Which of these is reduce (use less)? (a) carry a cloth bag (b) turn plastic into tiles (c) use a jar as a pen stand (d) reuse gift paper
27. 27.True or false: a well-bucket rope wheel is a pulley. (a) False (b) True
28. 28.📋 Criterion: the model bridge must hold at least 500 g. In the test it held 550 g. Does it meet the criterion? (a) Yes (b) No
29. 29.🔍 Which is the odd one out? (a) using a light roof (b) raising heavy tanks high (c) stacking loose bricks (d) making brittle joints
30. 30.🏋️ Pushing a crate 1 m took 400 J of work. What force was used, in newtons?
31. 31.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
32. 32.🪝 A winch has a wheel of radius 16 cm and an axle of radius 2 cm. What effort on the wheel lifts an 880 N bucket on the axle, in newtons? (ideal)
33. 33.🪝 Fixed or movable pulley: which one needs effort = load? (a) a movable pulley (b) a fixed pulley
34. 34.Which job does a computer engineer do? (a) designs bicycle gears (b) designs hearing aids (c) writes app software (d) plans a dam
35. 35.⚖️ A seesaw balances. Meena (? N) sits 1 m from the pivot on one side; Arjun (160 N) sits 4 m from the pivot on the other side. What is the missing weight in newtons?
36. 36.🤝 In a design team, who cuts and joins parts? (a) recorder (b) materials manager (c) team leader (d) builder
37. 37.🔺 Which strong shape does a lintel over a door use? (a) arch (b) dome (c) triangle (d) beam
38. 38.♻️ Reduce, reuse or recycle: use a jar as a pen stand? (a) reduce (b) recycle (c) reuse
39. 39.Which of these is reuse (use again)? (a) turn plastic into tiles (b) print on both sides (c) reuse gift paper (d) switch off unused lights
40. 40.🧑‍🔧 Which kind of engineer designs artificial limbs? (a) civil (b) computer (c) electrical (d) biomedical

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