Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 900 · 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 seesaw balances. Kabir (? N) sits 4 m from the pivot on one side; Ravi (520 N) sits 1 m from the pivot on the other side. What is the missing weight in newtons?
2. 2.♻️ Reduce, reuse or recycle: melt cans into new cans? (a) recycle (b) reduce (c) reuse
3. 3.🪝 Fixed or movable pulley: which one makes you pull 2× rope? (a) a fixed pulley (b) a movable pulley
4. 4.🏋️ A machine lifts a load of 510 N when you push with 170 N. What is its mechanical advantage (MA)?
5. 5.⚖️ Along a straight bar, measured from the left end, the effort is at 40 cm, the fulcrum at 50 cm and the load at 30 cm. Which class of lever is it? (a) class 2 (b) class 1 (c) class 3
6. 6.True or false: a nutcracker is a lever. (a) True (b) False
7. 7.🏋️ A force of 120 N pushes a cart 3 m along the floor. How much work is done, in joules?
8. 8.🔄 What is the FIRST step of the engineering design process? (a) Ask (b) Create (c) Improve (d) Test
9. 9.💪 In which unit do we measure force? (a) metre (m) (b) second (s) (c) newton (N) (d) litre (L)
10. 10.🔺 Why can an arch carry heavy loads? (a) it works in compression (b) it bends easily (c) it is very light (d) it is hollow
11. 11.⚖️ In a class 3 lever, what is in the middle? (a) the fulcrum (b) the pulley (c) the load (d) the effort
12. 12.🏋️ Pushing a crate 8 m took 480 J of work. What force was used, in newtons?
13. 13.🏋️ A force of 490 N pushes a cart 7 m along the floor. How much work is done, in joules?
14. 14.🦺 In the workshop, is it safe to cut away from your body? (a) not safe (b) safe
15. 15.Which of these is an arch bridge? (a) cables tied down at ends (b) pushes out on its ends (c) tall towers hold cables (d) a flat deck on piers
16. 16.🪢 Tension or compression: a hanging lamp chain? (a) compression (b) tension
17. 17.🧱 Is clay pottery an electrical conductor or an insulator? (a) an insulator (b) a conductor
18. 18.🔄 Which design-process step is it to pick the build order? (a) Test (b) Imagine (c) Plan (d) Ask
19. 19.📋 Your team’s budget is ₹113. You must buy one roll of tape for ₹20. Straws cost ₹5 each. What is the greatest number of straws you can buy?
20. 20.⚖️ Going along a lever from one end to the other, the order is: load, effort, fulcrum. Which class of lever is it? (a) class 3 (b) class 2 (c) class 1
21. 21.Which of these is caused by magnetic force? (a) pedalling a cycle (b) an apple falls down (c) a fridge magnet sticks (d) a river flows downhill
22. 22.🏚️ Three solid model towers are made of the same material. Tower A is 150 cm tall on a 30 cm wide base, tower B is 40 cm tall on a 20 cm base and tower C is 30 cm tall on a 10 cm base. Which is the hardest to tip over? (a) tower B (b) tower A (c) tower C
23. 23.♻️ A project report has 72 pages. How many sheets of paper are needed if it is printed on both sides of each sheet?
24. 24.📋 Your team’s budget is ₹33. You must buy one roll of tape for ₹10. Straws cost ₹2 each. What is the greatest number of straws you can buy?
25. 25.🧪 A paper bridge was tested three times. It held 200 g, 110 g and 140 g. What is the mean (average) load it held, in grams?
26. 26.🪢 A sign weighing 300 N hangs from 5 identical vertical ropes that share the load equally. What is the tension in each rope, in newtons?
27. 27.🔺 Which strong shape does a roof truss use? (a) beam (b) triangle (c) arch (d) dome
28. 28.🤝 A team plans for 35 minutes, builds for 30 minutes and then tests for 30 minutes, one after another. How many minutes is that in all?
29. 29.🌉 Which bridge type: “a log across a stream”? (a) arch bridge (b) beam bridge (c) suspension bridge
30. 30.📐 On a plan, 1 cm stands for 10 m. A wall is 15 cm long on the plan. How long is the real wall, in metres?
31. 31.🛠️ What does an engineer do before building anything? (a) builds at once (b) understands the problem (c) paints the model (d) buys every material
32. 32.Which of these is an arch bridge? (a) deck hangs from cables (b) cables tied down at ends (c) a curve under the deck (d) the simplest bridge
33. 33.🔺 Which strong shape does a truss bridge side use? (a) beam (b) dome (c) triangle (d) arch
34. 34.🧱 Which material is best for the core of an electric wire? (a) copper (b) rubber (c) glass (d) wood
35. 35.True or false: to turn a screw, use pliers. (a) True (b) False
36. 36.Which of these happens in the Create step? (a) ask who will use it (b) dream up possible fixes (c) build the model (d) check it against goals
37. 37.⚖️ In a class 1 lever, what is in the middle? (a) the fulcrum (b) the effort (c) the load (d) nothing
38. 38.🧑‍🔧 Which branch of engineering works on aeroplanes and rockets? (a) chemical (b) civil (c) aerospace (d) computer
39. 39.📋 For a model bridge challenge, is “use only paper and tape” a constraint or a criterion? (a) a constraint (b) a criterion
40. 40.Which of these is recycle (make new things)? (a) print on both sides (b) melt cans into new cans (c) refill a water bottle (d) buy less packaging

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