Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 340 · 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 of these needs a waterproof material? (a) a water tank (b) an oven glove (c) a tea flask lining (d) a magnifier lens
2. 2.🪢 Tension or compression: a swing chain? (a) compression (b) tension
3. 3.True or false: a fixed pulley rises with the load. (a) True (b) False
4. 4.🧑‍🔧 Which kind of engineer writes app software? (a) computer (b) aerospace (c) chemical (d) mechanical
5. 5.🏚️ Does using a heavy roof make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
6. 6.🧑‍🔧 Which branch of engineering designs machines with moving parts? (a) civil (b) biomedical (c) mechanical (d) chemical
7. 7.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
8. 8.🔄 Which design-process step is it to dream up possible fixes? (a) Improve (b) Imagine (c) Plan (d) Ask
9. 9.🛠️ Which of these is a problem an engineer could solve? (a) a boring story (b) a road that floods (c) a lost cricket match (d) a sad song
10. 10.🏋️ A force of 10 N did 70 J of work. How many metres did the object move?
11. 11.💪 Is hitting a cricket ball a push or a pull? (a) a pull (b) a push
12. 12.📐 A model car is drawn so that 1 cm stands for 30 cm. The car is 4 cm long in the drawing. How long is the real car, in centimetres?
13. 13.⚖️ A lever bar balances. The load is ? N at 10 cm from the fulcrum. The effort is 20 N at 40 cm from the fulcrum on the other side. What is the missing force in newtons?
14. 14.🤝 How do engineers share a design with others? (a) no drawings at all (b) clear labelled sketches (c) secret notes (d) only talking fast
15. 15.💪 Is pressing a doorbell a push or a pull? (a) a push (b) a pull
16. 16.True or false: “keep ice for 1 hour” is a constraint (a limit). (a) True (b) False
17. 17.🛠️ People need to talk to someone far away. Which invention helps? (a) a lift (b) a tunnel (c) a fridge (d) a telephone
18. 18.🪝 A winch has a wheel of radius 35 cm and an axle of radius 5 cm. What effort on the wheel lifts a 280 N bucket on the axle, in newtons? (ideal)
19. 19.⚙️ A wedge is … (a) a rope on a wheel (b) a bar on a pivot (c) a wheel on a rod (d) two ramps back to back
20. 20.True or false: “float for 1 minute” is a criterion (a goal). (a) False (b) True
21. 21.📋 Your team’s budget is ₹95. You must buy one roll of tape for ₹20. Straws cost ₹5 each. What is the greatest number of straws you can buy?
22. 22.Which of these is reduce (use less)? (a) plant in old tyres (b) print on both sides (c) melt glass into new jars (d) pulp old paper
23. 23.True or false: a chemical engineer runs a fertiliser plant. (a) True (b) False
24. 24.🏋️ A smooth ramp is 15 m long and rises 3 m. What effort pushes a 3250 N box up it, in newtons? (ideal ramp, no friction)
25. 25.True or false: a telephone helps people store water for summer. (a) False (b) True
26. 26.🛞 More or less friction: sand on a slippery path? (a) less friction (b) more friction
27. 27.🏋️ Work is done when a force moves something … (a) only upwards (b) very slowly (c) without moving it (d) through a distance
28. 28.🔢 To follow the engineering design process, what comes right after “Imagine”? (a) Improve (b) Plan (c) Ask (d) Create
29. 29.📋 A design meets every criterion but costs more than the budget. Is it acceptable? (a) no, it breaks a limit (b) yes, it works (c) only if it is red (d) yes, always
30. 30.🏚️ Does stacking loose bricks make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
31. 31.🌉 In a suspension bridge, the main cables are in … (a) friction (b) no force (c) tension (d) compression
32. 32.🪝 A pulley system lifts a 680 N load with an effort of 170 N. What is its mechanical advantage (MA)?
33. 33.⚖️ Which class of lever is a broom when sweeping? (a) class 3 (b) class 2 (c) class 1
34. 34.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a glass sheet 6 N, a carpet 10 N, sandpaper 14 N, ice 4 N. How many newtons more were needed on sandpaper than on ice?
35. 35.🔍 Which is the odd one out? (a) a coral reef (b) a rainbow (c) a bridge (d) a cloud
36. 36.🧑‍🔧 Which kind of engineer designs hearing aids? (a) mechanical (b) civil (c) aerospace (d) biomedical
37. 37.📐 On a plan, 1 cm stands for 2 m. A real bridge is 32 m long. How long is it on the plan, in centimetres?
38. 38.📐 How many centimetres are in 1 metre? (a) 10 (b) 1000 (c) 60 (d) 100
39. 39.🪢 Tension or compression: a tent guy rope? (a) tension (b) compression
40. 40.📐 Why do engineers use scale drawings? (a) to save ink only (b) to make them pretty (c) to hide sizes (d) big things fit on paper

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