Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 528 · 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 lift (b) a mobile phone (c) a satellite (d) a cloud
2. 2.🪝 A pulley system lifts a 500 N load with an effort of 250 N. What is its mechanical advantage (MA)?
3. 3.♻️ Reduce, reuse or recycle: print on both sides? (a) reduce (b) reuse (c) recycle
4. 4.🧑‍🔧 Which kind of engineer designs car engines? (a) chemical (b) computer (c) civil (d) mechanical
5. 5.🏋️ A 2 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
6. 6.📋 Your team’s budget is ₹88. You must buy one roll of tape for ₹10. Straws cost ₹5 each. What is the greatest number of straws you can buy?
7. 7.🦺 What protects your eyes when sawing or drilling? (a) a cap (b) sunglasses (c) safety goggles (d) nothing
8. 8.🤝 In a design team, who keeps the team on track? (a) builder (b) materials manager (c) team leader (d) recorder
9. 9.True or false: “deck hangs from cables” is a beam bridge. (a) False (b) True
10. 10.True or false: to dream up possible fixes is the Test step. (a) False (b) True
11. 11.🌉 Which bridge type can cross the widest gap in one span? (a) arch bridge (b) beam bridge (c) suspension bridge (d) log bridge
12. 12.🤝 In a design team, who writes down results? (a) tester (b) team leader (c) builder (d) recorder
13. 13.Which job does a civil engineer do? (a) plans a dam (b) wires a new building (c) plans a space mission (d) designs school networks
14. 14.🪢 Compression is a force that … (a) pushes or squeezes (b) pulls or stretches (c) cools things (d) makes light
15. 15.🪝 Fixed or movable pulley: which one halves the effort? (a) a movable pulley (b) a fixed pulley
16. 16.🔺 A frame shaped like a triangle is made of straws joined by loose pins, with 0 corner-to-corner braces. Is it rigid or wobbly? (a) rigid (b) wobbly
17. 17.True or false: a cooking pot handle needs a flexible material. (a) True (b) False
18. 18.🔍 Which is the odd one out? (a) stacking loose bricks (b) adding steel to concrete (c) making brittle joints (d) using a heavy roof
19. 19.🪝 A winch has a wheel of radius 8 cm and an axle of radius 4 cm. What effort on the wheel lifts a 300 N bucket on the axle, in newtons? (ideal)
20. 20.📋 A constraint is … (a) a final test (b) a limit you must keep to (c) a kind of glue (d) a goal for success
21. 21.Which of these happens in the Imagine step? (a) draw a labelled diagram (b) brainstorm many ideas (c) make a prototype (d) try it out
22. 22.🧑‍🔧 Which kind of engineer designs hearing aids? (a) electrical (b) biomedical (c) civil (d) aerospace
23. 23.🛠️ Is a volcano made by engineers or found in nature? (a) found in nature (b) made by engineers
24. 24.🪝 What does a single fixed pulley change? (a) the colour of rope (b) gravity (c) the size of the load (d) the direction of pull
25. 25.🧑‍🔧 Which kind of engineer designs knee implants? (a) electrical (b) aerospace (c) biomedical (d) mechanical
26. 26.🏋️ A longer ramp to the same height needs … (a) the same effort (b) no effort (c) more effort (d) less effort
27. 27.⚖️ Along a straight bar, measured from the left end, the effort is at 0 cm, the fulcrum at 30 cm and the load at 70 cm. Which class of lever is it? (a) class 3 (b) class 2 (c) class 1
28. 28.⚖️ A lever bar balances. The load is ? N at 40 cm from the fulcrum. The effort is 320 N at 50 cm from the fulcrum on the other side. What is the missing force in newtons?
29. 29.⚖️ Along a straight bar, measured from the left end, the effort is at 40 cm, the fulcrum at 20 cm and the load at 30 cm. Which class of lever is it? (a) class 1 (b) class 2 (c) class 3
30. 30.🏚️ Three solid model towers are made of the same material. Tower A is 80 cm tall on a 20 cm wide base, tower B is 180 cm tall on a 30 cm base and tower C is 100 cm tall on a 20 cm base. Which is the easiest to tip over? (a) tower C (b) tower A (c) tower B
31. 31.True or false: a plug pin needs an electrical conductor. (a) True (b) False
32. 32.True or false: a bicycle is found in nature. (a) True (b) False
33. 33.⚖️ A lever bar balances. The load is 270 N at 30 cm from the fulcrum. The effort is ? N at 30 cm from the fulcrum on the other side. What is the missing force in newtons?
34. 34.🔍 Which is the odd one out? (a) roll at least 2 metres (b) lift a cup of water (c) stand in a fan breeze (d) use only paper and tape
35. 35.⚖️ Along a straight bar, measured from the left end, the effort is at 60 cm, the fulcrum at 30 cm and the load at 90 cm. Which class of lever is it? (a) class 1 (b) class 2 (c) class 3
36. 36.Which need does a telephone meet? (a) reach a top floor fast (b) go through a mountain (c) keep food fresh longer (d) talk to someone far away
37. 37.Which of these is a pulley? (a) an axe blade (b) a crane hook block (c) a crowbar (d) a claw hammer on a nail
38. 38.⚖️ A lever bar balances. The load is ? N at 10 cm from the fulcrum. The effort is 20 N at 20 cm from the fulcrum on the other side. What is the missing force in newtons?
39. 39.🏋️ A force of 420 N pushes a cart 7 m along the floor. How much work is done, in joules?
40. 40.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) record every result (d) test it only once

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