Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 143 · 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.⚖️ On a seesaw, a heavier child should sit … (a) closer to the pivot (b) farther from the pivot (c) anywhere (d) on the pivot
2. 2.True or false: to smooth a rough edge, use a screwdriver. (a) True (b) False
3. 3.🔍 Which is the odd one out? (a) change only one thing (b) use a new load each time (c) use the same load (d) measure the same way
4. 4.What does the builder do? (a) puts the model together (b) tracks what is used up (c) runs the tests (d) keeps the team on track
5. 5.💪 Two equal forces push on a box from opposite sides. They are … (a) balanced (b) gravity (c) doubled (d) unbalanced
6. 6.Which of these is a suspension bridge? (a) a log across a stream (b) a flat deck on piers (c) a rope bridge in hills (d) good for short gaps
7. 7.🪢 A sign weighing 480 N hangs from 4 identical vertical ropes that share the load equally. What is the tension in each rope, in newtons?
8. 8.True or false: a beam balance is a class 1 lever (fulcrum in the middle). (a) False (b) True
9. 9.⚖️ 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 3 (c) class 1
10. 10.🌉 Which bridge type: “the longest spans of all”? (a) beam bridge (b) arch bridge (c) suspension bridge
11. 11.📐 A model car is drawn so that 1 cm stands for 30 cm. The car is 5 cm long in the drawing. How long is the real car, in centimetres?
12. 12.True or false: a nutcracker is a class 1 lever (fulcrum in the middle). (a) False (b) True
13. 13.💪 A bag has a mass of 54 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
14. 14.🏋️ A longer ramp to the same height needs … (a) less effort (b) no effort (c) the same effort (d) more effort
15. 15.🧑‍🔧 Which branch of engineering designs machines with moving parts? (a) chemical (b) biomedical (c) civil (d) mechanical
16. 16.⚖️ In a class 2 lever, what is in the middle? (a) the effort (b) the load (c) the fulcrum (d) the axle
17. 17.🔍 Which is the odd one out? (a) tie back long hair (b) run while holding tools (c) cut away from your body (d) carry scissors closed
18. 18.🧱 Which material is best for a cooking pot handle? (a) wood or plastic (b) iron (c) copper (d) aluminium
19. 19.🔍 Which is the odd one out? (a) raising heavy tanks high (b) leaving out steel bars (c) using a light roof (d) stacking loose bricks
20. 20.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
21. 21.⚙️ A screw is really … (a) a kind of wheel (b) a bent lever (c) a ramp wrapped round (d) a tiny pulley
22. 22.True or false: flowing river water is a renewable energy source. (a) True (b) False
23. 23.⚙️ Which simple machine is a jar lid? (a) wedge (b) wheel and axle (c) screw (d) lever
24. 24.True or false: “cables tied down at ends” is a beam bridge. (a) True (b) False
25. 25.🏋️ A force of 20 N pushes a cart 9 m along the floor. How much work is done, in joules?
26. 26.True or false: “spend at most ₹100” is a constraint (a limit). (a) False (b) True
27. 27.What does the team leader do? (a) keeps the design notes (b) checks the goals are met (c) puts the model together (d) keeps the team on track
28. 28.🔺 A frame shaped like a triangle is made of straws joined by loose pins, with 0 corner-to-corner braces. Is it rigid or wobbly? (a) rigid (b) wobbly
29. 29.🤝 A team plans for 60 minutes, builds for 45 minutes and then tests for 20 minutes, one after another. How many minutes is that in all?
30. 30.⚖️ Along a straight bar, measured from the left end, the effort is at 20 cm, the fulcrum at 60 cm and the load at 0 cm. Which class of lever is it? (a) class 2 (b) class 3 (c) class 1
31. 31.⚖️ A seesaw balances. Kabir (600 N) sits 3 m from the pivot on one side; Meena (600 N) sits ? m from the pivot on the other side. What is the missing distance in metres?
32. 32.♻️ Reduce, reuse or recycle: buy less packaging? (a) reuse (b) reduce (c) recycle
33. 33.True or false: to help a stuck teammate is poor teamwork. (a) False (b) True
34. 34.🪝 A load of 680 N hangs from a pulley system in which 4 rope sections hold up the load. What effort is needed, in newtons? (ideal pulleys)
35. 35.🤝 A team of 2 shares 4 equal jobs fairly. Each job takes 5 minutes. How many minutes does each person work?
36. 36.🔍 Which is the odd one out? (a) a well-bucket rope wheel (b) a crane hook block (c) a flagpole rope wheel (d) a jar lid
37. 37.🔍 Which is the odd one out? (a) a ceiling fan (b) a bicycle (c) a mobile phone (d) a volcano
38. 38.♻️ Is natural gas a renewable or a non-renewable energy source? (a) non-renewable (b) renewable
39. 39.♻️ A family used to throw away 7 plastic bags a week. They now carry cloth bags. How many plastic bags do they save in 9 weeks?
40. 40.⚖️ Along a straight bar, measured from the left end, the effort is at 70 cm, the fulcrum at 30 cm and the load at 40 cm. Which class of lever is it? (a) class 3 (b) class 1 (c) class 2

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