Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 67 · 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.True or false: a river is made by engineers. (a) True (b) False
2. 2.🪝 Fixed or movable pulley: which one needs effort = load? (a) a movable pulley (b) a fixed pulley
3. 3.True or false: to let adults use hot glue is safe. (a) False (b) True
4. 4.🌉 In a suspension bridge, the main cables are in … (a) friction (b) tension (c) compression (d) no force
5. 5.True or false: “stand in a fan breeze” is a constraint (a limit). (a) False (b) True
6. 6.📐 On a plan, 1 cm stands for 5 m. A real bridge is 60 m long. How long is it on the plan, in centimetres?
7. 7.Which of these is in compression (pushed)? (a) a tent guy rope (b) a swing chain (c) a stone in an arch (d) a tug of war rope
8. 8.🧱 Which property matters most for the core of a wire? (a) electrical conductor (b) waterproof (c) flexible (d) transparent
9. 9.True or false: a mobile phone is found in nature. (a) False (b) True
10. 10.🏋️ A force of 280 N did 1960 J of work. How many metres did the object move?
11. 11.True or false: “finish in 40 minutes” is a criterion (a goal). (a) True (b) False
12. 12.⚖️ Going along a lever from one end to the other, the order is: effort, fulcrum, load. Which class of lever is it? (a) class 2 (b) class 1 (c) class 3
13. 13.🏋️ A force of 130 N did 910 J of work. How many metres did the object move?
14. 14.🔍 Which is the odd one out? (a) finish in 40 minutes (b) fit on a school desk (c) spend at most ₹100 (d) lift a cup of water
15. 15.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: ice 4 N, a glass sheet 8 N, a wooden plank 11 N, sandpaper 14 N. How many newtons more were needed on sandpaper than on ice?
16. 16.Which of these happens in the Create step? (a) measure its performance (b) find the limits (c) make a prototype (d) dream up possible fixes
17. 17.🏋️ An 8 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
18. 18.♻️ A family used to throw away 10 plastic bags a week. They now carry cloth bags. How many plastic bags do they save in 10 weeks?
19. 19.⚖️ Going along a lever from one end to the other, the order is: fulcrum, load, effort. Which class of lever is it? (a) class 3 (b) class 1 (c) class 2
20. 20.🧑‍🔧 Which kind of engineer builds a website? (a) biomedical (b) electrical (c) mechanical (d) computer
21. 21.⚖️ A lever bar balances. The load is 40 N at ? cm from the fulcrum. The effort is 10 N at 40 cm from the fulcrum on the other side. What is the missing distance in centimetres?
22. 22.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
23. 23.🛞 More or less friction: skating on ice? (a) less friction (b) more friction
24. 24.True or false: a stretched rubber band is in tension (pulled). (a) True (b) False
25. 25.True or false: a bridge is found in nature. (a) True (b) False
26. 26.🔍 Which is the odd one out? (a) a nut and bolt (b) a door stopper (c) the tip of a nail (d) a knife edge
27. 27.🤝 A team plans for 55 minutes, builds for 50 minutes and then tests for 25 minutes, one after another. How many minutes is that in all?
28. 28.📋 For a model bridge challenge, is “spend at most ₹100” a constraint or a criterion? (a) a constraint (b) a criterion
29. 29.📐 How many metres are in 1 kilometre? (a) 10 (b) 100 (c) 1000 (d) 10000
30. 30.⚖️ A seesaw balances. Ravi (640 N) sits ? m from the pivot on one side; Kabir (640 N) sits 4 m from the pivot on the other side. What is the missing distance in metres?
31. 31.Which job does a civil engineer do? (a) designs knee implants (b) designs a metro tunnel (c) builds hospital scanners (d) designs power lines
32. 32.🤝 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?
33. 33.🧱 Is glass an electrical conductor or an insulator? (a) a conductor (b) an insulator
34. 34.⚖️ In a class 2 lever, what is in the middle? (a) the fulcrum (b) the effort (c) the load (d) the axle
35. 35.⚖️ Going along a lever from one end to the other, the order is: fulcrum, effort, load. Which class of lever is it? (a) class 2 (b) class 1 (c) class 3
36. 36.🏋️ A 16 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
37. 37.🏋️ A 4 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
38. 38.⚖️ What is the pivot point of a lever called? (a) the effort (b) the axle (c) the fulcrum (d) the load
39. 39.🔍 Which is the odd one out? (a) a crowbar (b) a road up a hill (c) a playground slide (d) a truck loading ramp
40. 40.True or false: using a heavy roof makes a building safer in earthquakes. (a) True (b) False

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