Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 775 · 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 seesaw balances. Arjun (760 N) sits 3 m from the pivot on one side; Ravi (? N) sits 4 m from the pivot on the other side. What is the missing weight in newtons?
2. 2.🔢 To follow the engineering design process, what comes right after “Plan”? (a) Improve (b) Create (c) Imagine (d) Ask
3. 3.True or false: to measure a long length, use a protractor. (a) True (b) False
4. 4.⚖️ A lever balances when … (a) the fulcrum moves (b) both weights are equal (c) turning effects match (d) the bar is short
5. 5.Which of these is recycle (make new things)? (a) switch off unused lights (b) fix a dripping tap (c) carry a cloth bag (d) pulp old paper
6. 6.🏚️ Three solid model towers are made of the same material. Tower A is 140 cm tall on a 20 cm wide base, tower B is 30 cm tall on a 10 cm base and tower C is 200 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower B (b) tower C (c) tower A
7. 7.🌉 Which bridge type: “cables tied down at ends”? (a) arch bridge (b) beam bridge (c) suspension bridge
8. 8.🏋️ Pushing a crate 5 m took 100 J of work. What force was used, in newtons?
9. 9.🪢 Tension or compression: a stone in an arch? (a) tension (b) compression
10. 10.🔺 A beam bends under a load. Its top side is … (a) squeezed (compression) (b) not affected (c) stretched (tension) (d) floating
11. 11.True or false: a pair of scissors is a class 3 lever (effort in the middle). (a) True (b) False
12. 12.🧱 Which property matters most for a plug pin? (a) waterproof (b) flexible (c) transparent (d) electrical conductor
13. 13.True or false: to hide a failed test is good testing. (a) True (b) False
14. 14.🌉 Which bridge type: “deck hangs from cables”? (a) beam bridge (b) arch bridge (c) suspension bridge
15. 15.🛠️ Is a water filter made by engineers or found in nature? (a) made by engineers (b) found in nature
16. 16.♻️ A school bench is made from 300 recycled plastic bottles. How many benches can be made from 1500 bottles?
17. 17.🏋️ A force of 20 N pushes a cart 6 m along the floor. How much work is done, in joules?
18. 18.⚖️ A seesaw balances. Kabir (120 N) sits 4 m from the pivot on one side; Arjun (480 N) sits ? m from the pivot on the other side. What is the missing distance in metres?
19. 19.🪝 Fixed or movable pulley: which one needs effort = load? (a) a movable pulley (b) a fixed pulley
20. 20.🔍 Which is the odd one out? (a) cotton cloth (b) dry wood (c) aluminium (d) plastic
21. 21.🔍 Which is the odd one out? (a) using flexible joints (b) keeping a simple shape (c) leaving out steel bars (d) adding cross bracing
22. 22.🧑‍🔧 Which branch of engineering designs machines with moving parts? (a) chemical (b) biomedical (c) mechanical (d) civil
23. 23.True or false: a mechanical engineer designs factory machines. (a) False (b) True
24. 24.🤝 A team of 2 shares 4 equal jobs fairly. Each job takes 9 minutes. How many minutes does each person work?
25. 25.💪 A box weighs 590 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
26. 26.Which of these uses triangles? (a) a shelf on two brackets (b) a curved stone doorway (c) a plank over a drain (d) an electric pylon
27. 27.True or false: “float for 1 minute” is a constraint (a limit). (a) True (b) False
28. 28.🏋️ Mechanical advantage (MA) = … (a) load × effort (b) effort ÷ load (c) load + effort (d) load ÷ effort
29. 29.🪢 A concrete slab weighing 9000 N rests evenly on 3 identical pillars. What compression force does each pillar carry, in newtons?
30. 30.💪 Two equal forces push on a box from opposite sides. They are … (a) unbalanced (b) doubled (c) gravity (d) balanced
31. 31.🪢 Tension or compression: a tall bridge tower? (a) tension (b) compression
32. 32.🪢 Tension or compression: a hanging lamp chain? (a) compression (b) tension
33. 33.True or false: a movable pulley only changes direction. (a) False (b) True
34. 34.🪢 Tension or compression: a pillar under a roof? (a) tension (b) compression
35. 35.True or false: powder on a carrom board gives less friction. (a) False (b) True
36. 36.🪝 A pulley system lifts a 600 N load with an effort of 150 N. What is its mechanical advantage (MA)?
37. 37.🏋️ A force of 200 N did 800 J of work. How many metres did the object move?
38. 38.True or false: to give kind feedback is poor teamwork. (a) False (b) True
39. 39.True or false: a lift is found in nature. (a) True (b) False
40. 40.🏋️ A smooth ramp is 6 m long and rises 2 m. What effort pushes a 1800 N box up it, in newtons? (ideal ramp, no friction)

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