Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 338 · 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.📋 For a model bridge challenge, is “spend at most ₹100” a constraint or a criterion? (a) a criterion (b) a constraint
2. 2.True or false: to tighten a nut, use a spanner. (a) False (b) True
3. 3.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) it looks busy (d) to get reliable results
4. 4.🪢 A sign weighing 30 N hangs from 3 identical vertical ropes that share the load equally. What is the tension in each rope, in newtons?
5. 5.📐 On a plan, 1 cm stands for 2 m. A real bridge is 34 m long. How long is it on the plan, in centimetres?
6. 6.🤝 A team plans for 45 minutes, builds for 15 minutes and then tests for 20 minutes, one after another. How many minutes is that in all?
7. 7.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) measure the same way (d) guess, do not measure
8. 8.🔺 A flat frame has 6 straight sides joined by loose pins at the corners. What is the least number of corner-to-corner braces needed to make it rigid?
9. 9.📋 For a model bridge challenge, is “fit on a school desk” a constraint or a criterion? (a) a criterion (b) a constraint
10. 10.🤝 In a design team, who cuts and joins parts? (a) materials manager (b) team leader (c) tester (d) builder
11. 11.📋 Criterion: the model bridge must hold at least 300 g. In the test it held 300 g. Does it meet the criterion? (a) No (b) Yes
12. 12.🔧 Which tool would you use to measure a long length? (a) a screwdriver (b) a tape measure (c) a spirit level (d) a spanner
13. 13.Which of these is reduce (use less)? (a) refill a water bottle (b) switch off unused lights (c) use a jar as a pen stand (d) plant in old tyres
14. 14.📐 How many metres are in 1 kilometre? (a) 10 (b) 10000 (c) 1000 (d) 100
15. 15.🧑‍🔧 Which branch of engineering designs buildings, roads and bridges? (a) biomedical (b) chemical (c) computer (d) civil
16. 16.🏋️ A force of 400 N pushes a cart 8 m along the floor. How much work is done, in joules?
17. 17.⚙️ Which simple machine is a well winch handle? (a) lever (b) wedge (c) wheel and axle (d) inclined plane
18. 18.Which of these is in tension (pulled)? (a) a brick at a wall base (b) a stretched rubber band (c) a stone in an arch (d) a pillar under a roof
19. 19.Which of these is made by engineers? (a) a waterfall (b) a banyan tree (c) a bicycle (d) a rainbow
20. 20.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
21. 21.True or false: a chemical engineer designs factory machines. (a) True (b) False
22. 22.True or false: using a light roof makes a building less safe in earthquakes. (a) True (b) False
23. 23.🔢 To follow the engineering design process, which comes first: “Plan” or “Improve”? (a) Plan (b) Improve
24. 24.Which of these is a beam bridge? (a) deck hangs from cables (b) cables tied down at ends (c) tall towers hold cables (d) the simplest bridge
25. 25.🔄 Is the engineering design process done only once? (a) no, it repeats (b) only on Sundays (c) yes, only once (d) only for big jobs
26. 26.📋 A design meets every criterion but costs more than the budget. Is it acceptable? (a) yes, it works (b) yes, always (c) only if it is red (d) no, it breaks a limit
27. 27.🏚️ Where should heavy water tanks go in a quake zone? (a) low down (b) hanging outside (c) on a thin pole (d) on the very top
28. 28.💪 Which can a force NOT do? (a) stop it moving (b) change its colour (c) change its shape (d) start it moving
29. 29.True or false: to run while holding tools is not safe. (a) True (b) False
30. 30.📐 A beam is 330 cm long. How long is it in metres? =
31. 31.⚖️ Which class of lever is a wheelbarrow? (a) class 2 (b) class 3 (c) class 1
32. 32.⚖️ Along a straight bar, measured from the left end, the effort is at 20 cm, the fulcrum at 30 cm and the load at 10 cm. Which class of lever is it? (a) class 1 (b) class 2 (c) class 3
33. 33.🌉 Which bridge type can cross the widest gap in one span? (a) log bridge (b) arch bridge (c) suspension bridge (d) beam bridge
34. 34.🔺 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?
35. 35.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) read the challenge rules (b) strengthen the weak part (c) sketch three ideas (d) build it with straws
36. 36.⚖️ A seesaw balances. Zoya (? N) sits 1 m from the pivot on one side; Asha (160 N) sits 1 m from the pivot on the other side. What is the missing weight in newtons?
37. 37.🤝 A teammate’s idea seems odd. What should you do first? (a) laugh at it (b) listen and ask why (c) ignore it (d) walk away
38. 38.🧪 What is a prototype? (a) a broken part (b) the final product (c) an early test model (d) a sales poster
39. 39.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a carpet 8 N, sandpaper 11 N, ice 1 N, a wooden plank 4 N. Which surface gave the most friction? (a) sandpaper (b) ice (c) a wooden plank (d) a carpet
40. 40.📐 On a plan, 1 cm stands for 5 m. A wall is 15 cm long on the plan. How long is the real wall, in metres?

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