Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 131 · 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.🦺 In the workshop, is it safe to run while holding tools? (a) not safe (b) safe
2. 2.🦺 In the workshop, is it safe to cut away from your body? (a) not safe (b) safe
3. 3.🔄 After testing, a design does not work well. What comes next? (a) Imagine (b) give up (c) Improve (d) Ask
4. 4.📋 Criterion: the model bridge must hold at least 900 g. In the test it held 800 g. Does it meet the criterion? (a) Yes (b) No
5. 5.True or false: flowing river water is a renewable energy source. (a) True (b) False
6. 6.True or false: to run while holding tools is safe. (a) True (b) False
7. 7.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to test ideas cheaply (c) to avoid testing (d) to sell them at once
8. 8.⚖️ A lever balances when … (a) the bar is short (b) the fulcrum moves (c) turning effects match (d) both weights are equal
9. 9.Which of these needs a waterproof material? (a) a water tank (b) the core of a wire (c) a switch contact (d) a hair band
10. 10.True or false: a chemical engineer makes medicines in bulk. (a) True (b) False
11. 11.📋 For a model bridge challenge, is “use only paper and tape” a constraint or a criterion? (a) a criterion (b) a constraint
12. 12.💪 Two children push a box to the right, one with 60 N and the other with 30 N. What is the net (total) force on the box, in newtons?
13. 13.🛠️ Is a bridge made by engineers or found in nature? (a) found in nature (b) made by engineers
14. 14.🌉 What holds up a long beam bridge in the middle? (a) piers (b) balloons (c) nothing (d) cables only
15. 15.True or false: a computer engineer designs knee implants. (a) False (b) True
16. 16.⚖️ Which class of lever is your forearm? (a) class 1 (b) class 3 (c) class 2
17. 17.Which of these needs an electrical conductor? (a) the core of a wire (b) an oven glove (c) an umbrella cover (d) a skipping rope
18. 18.🧪 A paper bridge was tested three times. It held 270 g, 130 g and 200 g. What is the mean (average) load it held, in grams?
19. 19.🔍 Which is the odd one out? (a) a tow rope on a car (b) a swing chain (c) a crane lifting cable (d) a pillar under a roof
20. 20.True or false: to ignore the team plan is poor teamwork. (a) False (b) True
21. 21.⚖️ A seesaw balances. Zoya (480 N) sits 4 m from the pivot on one side; Ravi (? N) sits 4 m from the pivot on the other side. What is the missing weight in newtons?
22. 22.🧪 A paper bridge was tested three times. It held 300 g, 110 g and 220 g. What is the mean (average) load it held, in grams?
23. 23.🔺 A flat frame has 5 straight sides joined by loose pins at the corners. What is the least number of corner-to-corner braces needed to make it rigid?
24. 24.🔍 Which is the odd one out? (a) using a heavy roof (b) stacking loose bricks (c) having a wide base (d) building tall and narrow
25. 25.True or false: a crane arm uses a dome. (a) True (b) False
26. 26.⚖️ A seesaw balances. Meena (? N) sits 2 m from the pivot on one side; Kabir (200 N) sits 4 m from the pivot on the other side. What is the missing weight in newtons?
27. 27.🧑‍🔧 Which kind of engineer builds rockets? (a) mechanical (b) civil (c) aerospace (d) biomedical
28. 28.🔍 Which is the odd one out? (a) a waterfall (b) a coral reef (c) a mountain (d) a lift
29. 29.♻️ A project report has 12 pages. How many sheets of paper are needed if it is printed on both sides of each sheet?
30. 30.💪 A bag has a mass of 55 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
31. 31.📐 A model car is drawn so that 1 cm stands for 10 cm. The car is 14 cm long in the drawing. How long is the real car, in centimetres?
32. 32.🪝 A well winch has a handle (wheel) of radius 15 cm turning an axle of radius 3 cm. What is its mechanical advantage (MA)?
33. 33.🧑‍🔧 Which branch of engineering designs buildings, roads and bridges? (a) computer (b) biomedical (c) chemical (d) civil
34. 34.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) read the challenge rules (c) load it with coins (d) sketch three ideas
35. 35.True or false: drawing up a well bucket is a push. (a) False (b) True
36. 36.🤝 Why do engineers work in teams? (a) to work alone (b) to argue more (c) to finish nothing (d) many skills and ideas
37. 37.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a wooden plank 7 N, a carpet 9 N, ice 1 N, a glass sheet 4 N. Which surface gave the most friction? (a) a glass sheet (b) a wooden plank (c) a carpet (d) ice
38. 38.💪 Which force is at work: pedalling a cycle? (a) magnetic force (b) gravity (c) muscular force (d) friction
39. 39.🏋️ Pushing a crate 3 m took 660 J of work. What force was used, in newtons?
40. 40.🏋️ Pushing a crate 2 m took 860 J of work. What force was used, in newtons?

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