Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 786 · 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 lever bar balances. The load is ? N at 40 cm from the fulcrum. The effort is 360 N at 90 cm from the fulcrum on the other side. What is the missing force in newtons?
2. 2.True or false: a lemon squeezer is a class 3 lever (effort in the middle). (a) False (b) True
3. 3.🔄 In which step do engineers draw a labelled diagram? (a) Improve (b) Test (c) Plan (d) Ask
4. 4.True or false: a tent guy rope is in compression (pushed). (a) False (b) True
5. 5.Which need does a solar panel meet? (a) go through a mountain (b) store water for summer (c) carry many people far (d) make power from sunlight
6. 6.🧑‍🔧 Which branch of engineering designs machines with moving parts? (a) civil (b) mechanical (c) chemical (d) biomedical
7. 7.Which of these happens in the Improve step? (a) make a prototype (b) make it better, retest (c) measure its performance (d) check it against goals
8. 8.🛠️ Is a bicycle made by engineers or found in nature? (a) made by engineers (b) found in nature
9. 9.📐 Why do engineers use scale drawings? (a) to save ink only (b) big things fit on paper (c) to hide sizes (d) to make them pretty
10. 10.📋 For a model bridge challenge, is “fit on a school desk” a constraint or a criterion? (a) a criterion (b) a constraint
11. 11.True or false: “float for 1 minute” is a constraint (a limit). (a) False (b) True
12. 12.🔄 What is the FIRST step of the engineering design process? (a) Improve (b) Create (c) Test (d) Ask
13. 13.Which of these happens in the Plan step? (a) build the model (b) draw a labelled diagram (c) find the limits (d) follow the plan to build
14. 14.🧱 Is plastic an electrical conductor or an insulator? (a) an insulator (b) a conductor
15. 15.⚖️ Which class of lever is a crowbar? (a) class 3 (b) class 1 (c) class 2
16. 16.⚖️ Along a straight bar, measured from the left end, the effort is at 20 cm, the fulcrum at 80 cm and the load at 50 cm. Which class of lever is it? (a) class 2 (b) class 3 (c) class 1
17. 17.What does the recorder do? (a) collects the supplies (b) writes down results (c) shares out the jobs (d) puts the model together
18. 18.📋 Your team’s budget is ₹34. You must buy one roll of tape for ₹10. Straws cost ₹3 each. What is the greatest number of straws you can buy?
19. 19.🌉 Which bridge type: “a rope bridge in hills”? (a) suspension bridge (b) arch bridge (c) beam bridge
20. 20.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) all of them (d) one
21. 21.🤝 Is it good or poor teamwork to blame others for faults? (a) poor teamwork (b) good teamwork
22. 22.🔍 Which is the odd one out? (a) using a light roof (b) making brittle joints (c) adding steel to concrete (d) fitting rubber base pads
23. 23.🔍 Which is the odd one out? (a) a mountain (b) a coral reef (c) a rainbow (d) a dam
24. 24.⚖️ Turning effect = force × … (a) mass of fulcrum (b) colour of bar (c) distance from fulcrum (d) time taken
25. 25.♻️ Is flowing river water a renewable or a non-renewable energy source? (a) renewable (b) non-renewable
26. 26.True or false: a spectacle lens needs a flexible material. (a) True (b) False
27. 27.⚖️ A seesaw balances. Arjun (? N) sits 2 m from the pivot on one side; Asha (220 N) sits 1 m from the pivot on the other side. What is the missing weight in newtons?
28. 28.True or false: a movable pulley halves the effort. (a) False (b) True
29. 29.True or false: adding cross bracing makes a building less safe in earthquakes. (a) False (b) True
30. 30.⚖️ On a seesaw, a heavier child should sit … (a) on the pivot (b) anywhere (c) closer to the pivot (d) farther from the pivot
31. 31.📐 A model car is drawn so that 1 cm stands for 20 cm. The car is 7 cm long in the drawing. How long is the real car, in centimetres?
32. 32.🧱 Which material is best for the bars inside concrete? (a) steel (b) rubber (c) glass (d) plastic
33. 33.🪝 A pulley system lifts a 1160 N load with an effort of 290 N. What is its mechanical advantage (MA)?
34. 34.📐 A beam is 350 cm long. How long is it in metres? =
35. 35.⚖️ Along a straight bar, measured from the left end, the effort is at 60 cm, the fulcrum at 20 cm and the load at 80 cm. Which class of lever is it? (a) class 1 (b) class 3 (c) class 2
36. 36.🏚️ Does adding cross bracing make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
37. 37.♻️ Reduce, reuse or recycle: buy less packaging? (a) reuse (b) reduce (c) recycle
38. 38.🔍 Which is the odd one out? (a) making brittle joints (b) having a wide base (c) stacking loose bricks (d) raising heavy tanks high
39. 39.📋 Constraint: the tower must be no taller than 30 cm. The team’s tower is 32 cm tall. Is it within the constraint? (a) Yes (b) No
40. 40.🤝 Why do engineers work in teams? (a) to argue more (b) to work alone (c) many skills and ideas (d) to finish nothing

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