Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 646 · 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.🔺 How do engineers stop a square frame from wobbling? (a) paint it (b) make it bigger (c) add a diagonal brace (d) take off a side
2. 2.🧱 Which property matters most for an oven glove? (a) heat insulator (b) transparent (c) flexible (d) electrical conductor
3. 3.Which of these is caused by friction? (a) shoes grip the floor (b) a magnet picks up pins (c) pedalling a cycle (d) a thrown ball comes down
4. 4.Which of these uses a beam? (a) an electric pylon (b) an old stone bridge (c) a fort gateway (d) a plank over a drain
5. 5.⚖️ A seesaw balances. Meena (100 N) sits 3 m from the pivot on one side; Kabir (300 N) sits ? m from the pivot on the other side. What is the missing distance in metres?
6. 6.🏋️ A machine lifts a load of 420 N when you push with 140 N. What is its mechanical advantage (MA)?
7. 7.📐 A beam is 770 cm long. How long is it in metres? =
8. 8.True or false: a fixed pulley needs effort = load. (a) False (b) True
9. 9.Which of these uses an arch? (a) an old stone bridge (b) a truss bridge side (c) an electric pylon (d) a shelf on two brackets
10. 10.🏋️ A longer ramp to the same height needs … (a) no effort (b) less effort (c) more effort (d) the same effort
11. 11.🧱 Which property matters most for a spectacle lens? (a) flexible (b) transparent (c) waterproof (d) electrical conductor
12. 12.What does the recorder do? (a) runs the tests (b) shares out the jobs (c) writes down results (d) tracks what is used up
13. 13.🧱 Is plastic an electrical conductor or an insulator? (a) a conductor (b) an insulator
14. 14.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) guess, do not measure (d) use the same load
15. 15.True or false: a fixed pulley stays in one place. (a) True (b) False
16. 16.🔍 Which is the odd one out? (a) steel (b) glass (c) aluminium (d) iron
17. 17.⚖️ A seesaw balances. Meena (? N) sits 1 m from the pivot on one side; Zoya (190 N) sits 3 m from the pivot on the other side. What is the missing weight in newtons?
18. 18.📋 For a model bridge challenge, is “fit on a school desk” a constraint or a criterion? (a) a criterion (b) a constraint
19. 19.🧪 In a fair test, how many things do you change at a time? (a) one (b) all of them (c) none (d) two
20. 20.🔍 Which is the odd one out? (a) a chisel (b) a door stopper (c) a knife edge (d) a flagpole rope wheel
21. 21.True or false: sunlight is a renewable energy source. (a) True (b) False
22. 22.⚖️ A lever bar balances. The load is 120 N at 10 cm from the fulcrum. The effort is 30 N at ? cm from the fulcrum on the other side. What is the missing distance in centimetres?
23. 23.📋 Your team’s budget is ₹34. You must buy one roll of tape for ₹10. Straws cost ₹1 each. What is the greatest number of straws you can buy?
24. 24.🪝 A bucket weighing 70 N is lifted with a single fixed pulley at the top of a well. What effort is needed, in newtons? (ideal pulley, no friction)
25. 25.💪 Is drawing up a well bucket a push or a pull? (a) a pull (b) a push
26. 26.True or false: a fixed pulley is on a flagpole top. (a) False (b) True
27. 27.Which of these is caused by friction? (a) a magnet picks up pins (b) rubbing hands warms them (c) an apple falls down (d) a river flows downhill
28. 28.📋 Your team’s budget is ₹51. You must buy one roll of tape for ₹10. Straws cost ₹5 each. What is the greatest number of straws you can buy?
29. 29.🔺 A flat frame has 8 straight sides joined by loose pins at the corners. What is the least number of corner-to-corner braces needed to make it rigid?
30. 30.🏋️ Pushing a crate 5 m took 1600 J of work. What force was used, in newtons?
31. 31.🛠️ Which of these is a problem an engineer could solve? (a) a road that floods (b) a lost cricket match (c) a boring story (d) a sad song
32. 32.True or false: to smooth a rough edge, use a protractor. (a) True (b) False
33. 33.True or false: a river is made by engineers. (a) True (b) False
34. 34.📋 Your team’s budget is ₹76. You must buy one roll of tape for ₹10. Straws cost ₹3 each. What is the greatest number of straws you can buy?
35. 35.⚖️ A lever bar balances. The load is 300 N at ? cm from the fulcrum. The effort is 180 N at 50 cm from the fulcrum on the other side. What is the missing distance in centimetres?
36. 36.True or false: a boat hull needs a transparent material. (a) True (b) False
37. 37.🌉 In a suspension bridge, the main cables are in … (a) friction (b) no force (c) tension (d) compression
38. 38.🧱 Which material is best for a raincoat? (a) paper (b) plastic-coated cloth (c) cotton wool (d) cardboard
39. 39.🪝 A pulley system lifts a 360 N load with an effort of 120 N. What is its mechanical advantage (MA)?
40. 40.True or false: “stones squeezed together” is a beam bridge. (a) True (b) False

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