Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 475 · 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 pulley system lifts a 60 N load with an effort of 30 N. What is its mechanical advantage (MA)?
2. 2.Which of these happens in the Test step? (a) dream up possible fixes (b) think of wild ideas (c) define the problem (d) measure its performance
3. 3.True or false: using flexible joints makes a building less safe in earthquakes. (a) True (b) False
4. 4.🪢 A concrete slab weighing 9600 N rests evenly on 6 identical pillars. What compression force does each pillar carry, in newtons?
5. 5.🏋️ Work is done when a force moves something … (a) without moving it (b) only upwards (c) very slowly (d) through a distance
6. 6.📐 On a plan, 1 cm stands for 5 m. A real bridge is 40 m long. How long is it on the plan, in centimetres?
7. 7.🤝 A team plans for 30 minutes, builds for 45 minutes and then tests for 5 minutes, one after another. How many minutes is that in all?
8. 8.⚖️ Going along a lever from one end to the other, the order is: effort, load, fulcrum. Which class of lever is it? (a) class 2 (b) class 3 (c) class 1
9. 9.🏋️ A force of 270 N pushes a cart 1 m along the floor. How much work is done, in joules?
10. 10.🔍 Which is the odd one out? (a) raising heavy tanks high (b) keeping a simple shape (c) using flexible joints (d) having a wide base
11. 11.🤝 Is it good or poor teamwork to talk over others? (a) poor teamwork (b) good teamwork
12. 12.📐 A beam is 160 cm long. How long is it in metres? =
13. 13.📋 For a model bridge challenge, is “stand in a fan breeze” a constraint or a criterion? (a) a criterion (b) a constraint
14. 14.True or false: biogas from waste is a renewable energy source. (a) True (b) False
15. 15.🌉 Which bridge type can cross the widest gap in one span? (a) log bridge (b) beam bridge (c) suspension bridge (d) arch bridge
16. 16.🦺 In the workshop, is it safe to cut away from your body? (a) safe (b) not safe
17. 17.🔍 Which is the odd one out? (a) lift a cup of water (b) finish in 40 minutes (c) use at most 20 straws (d) fit on a school desk
18. 18.📐 On a plan, 1 cm stands for 2 m. A real bridge is 6 m long. How long is it on the plan, in centimetres?
19. 19.True or false: to carry scissors closed is safe. (a) False (b) True
20. 20.🔄 Which design-process step is it to fix the weak part? (a) Test (b) Plan (c) Imagine (d) Improve
21. 21.📋 Your team’s budget is ₹58. You must buy one roll of tape for ₹5. Straws cost ₹4 each. What is the greatest number of straws you can buy?
22. 22.Which of these happens in the Improve step? (a) think of wild ideas (b) try it out (c) fix the weak part (d) make a prototype
23. 23.🧱 Which property matters most for a tea flask lining? (a) electrical conductor (b) transparent (c) waterproof (d) heat insulator
24. 24.True or false: a brick at a wall base is in compression (pushed). (a) False (b) True
25. 25.True or false: a window pane needs a transparent material. (a) False (b) True
26. 26.🏋️ A machine lifts a load of 340 N when you push with 170 N. What is its mechanical advantage (MA)?
27. 27.Which of these is a screw? (a) a jar lid (b) a truck loading ramp (c) a wheelchair ramp (d) a knife edge
28. 28.♻️ Reduce, reuse or recycle: pulp old paper? (a) reduce (b) reuse (c) recycle
29. 29.🧑‍🔧 Which kind of engineer designs knee implants? (a) biomedical (b) chemical (c) civil (d) aerospace
30. 30.🏚️ Why is a wide base safer? (a) it is lighter (b) it is colourful (c) it is harder to tip over (d) it is taller
31. 31.🤝 A team plans for 60 minutes, builds for 50 minutes and then tests for 30 minutes, one after another. How many minutes is that in all?
32. 32.📋 Criteria are … (a) the team names (b) the tools you use (c) the limits on money (d) goals a design must meet
33. 33.True or false: a skipping rope needs a heat insulator. (a) False (b) True
34. 34.🔍 Which is the odd one out? (a) guess, do not measure (b) change only one thing (c) measure the same way (d) use the same load
35. 35.🔺 A frame shaped like a pentagon is made of straws joined by loose pins, with 1 corner-to-corner brace. Is it rigid or wobbly? (a) wobbly (b) rigid
36. 36.💪 Two equal forces push on a box from opposite sides. They are … (a) unbalanced (b) gravity (c) doubled (d) balanced
37. 37.True or false: sand on a slippery path gives less friction. (a) False (b) True
38. 38.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) choose and draw one (c) strengthen the weak part (d) load it with coins
39. 39.🪝 Fixed or movable pulley: which one rises with the load? (a) a movable pulley (b) a fixed pulley
40. 40.🪢 A beam rests on two supports and is pressed down in the middle. Its bottom edge is … (a) not affected (b) squeezed (compression) (c) twisted (d) stretched (tension)

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