Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 653 · 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.📋 Your team’s budget is ₹29. You must buy one roll of tape for ₹15. Straws cost ₹1 each. What is the greatest number of straws you can buy?
2. 2.🔧 Which tool would you use to measure a long length? (a) a spirit level (b) pliers (c) a hand drill (d) a tape measure
3. 3.🔍 Which is the odd one out? (a) use the same load (b) skip writing results (c) change only one thing (d) repeat each test
4. 4.🪝 A load of 640 N hangs from a pulley system in which 4 rope sections hold up the load. What effort is needed, in newtons? (ideal pulleys)
5. 5.🔺 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
6. 6.🧑‍🔧 Which kind of engineer plans a power grid? (a) electrical (b) mechanical (c) chemical (d) aerospace
7. 7.🏚️ Does stacking loose bricks make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
8. 8.📐 A model car is drawn so that 1 cm stands for 30 cm. The car is 9 cm long in the drawing. How long is the real car, in centimetres?
9. 9.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: sandpaper 11 N, ice 4 N, a glass sheet 8 N, a wooden plank 9 N. How many newtons more were needed on sandpaper than on ice?
10. 10.🤝 In a design team, who runs the tests? (a) builder (b) recorder (c) tester (d) team leader
11. 11.📐 How many centimetres are in 1 metre? (a) 10 (b) 100 (c) 1000 (d) 60
12. 12.🔍 Which is the odd one out? (a) let adults use hot glue (b) wear safety goggles (c) leave tools on the floor (d) cut away from your body
13. 13.🏋️ A machine lifts a load of 950 N when you push with 190 N. What is its mechanical advantage (MA)?
14. 14.🧱 Which material is best for a cooking pot handle? (a) aluminium (b) wood or plastic (c) copper (d) iron
15. 15.🧑‍🔧 Which kind of engineer runs a fertiliser plant? (a) chemical (b) civil (c) biomedical (d) aerospace
16. 16.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a wooden plank 7 N, a carpet 8 N, sandpaper 11 N, a glass sheet 4 N. Which surface gave the most friction? (a) sandpaper (b) a glass sheet (c) a carpet (d) a wooden plank
17. 17.🏋️ A smooth ramp is 12 m long and rises 2 m. What effort pushes a 6000 N box up it, in newtons? (ideal ramp, no friction)
18. 18.🏚️ Three solid model towers are made of the same material. Tower A is 20 cm tall on a 20 cm wide base, tower B is 120 cm tall on a 30 cm base and tower C is 90 cm tall on a 30 cm base. Which is the hardest to tip over? (a) tower C (b) tower B (c) tower A
19. 19.True or false: flowing river water is a non-renewable energy source. (a) False (b) True
20. 20.Which of these happens in the Improve step? (a) list the materials (b) try it out (c) build the model (d) fix the weak part
21. 21.🪝 A pulley system has 1 rope section holding up the load. To lift the load by 5 m, how many metres of rope must you pull?
22. 22.Which of these is a wedge? (a) a seesaw (b) a bottle opener (c) a claw hammer on a nail (d) an axe blade
23. 23.⚖️ In a class 3 lever, what is in the middle? (a) the fulcrum (b) the load (c) the pulley (d) the effort
24. 24.True or false: pulling up your socks is a pull. (a) True (b) False
25. 25.Which of these is a wheel and axle? (a) a wood screw (b) a nutcracker (c) a round doorknob (d) a door stopper
26. 26.🔍 Which is the odd one out? (a) stand in a fan breeze (b) keep ice for 1 hour (c) finish in 40 minutes (d) roll at least 2 metres
27. 27.♻️ Is petrol a renewable or a non-renewable energy source? (a) non-renewable (b) renewable
28. 28.True or false: a roof truss uses triangles. (a) True (b) False
29. 29.🧪 A paper bridge was tested three times. It held 250 g, 150 g and 110 g. What is the mean (average) load it held, in grams?
30. 30.📐 On a plan, 1 cm stands for 2 m. A wall is 15 cm long on the plan. How long is the real wall, in metres?
31. 31.📋 For a model bridge challenge, is “keep ice for 1 hour” a constraint or a criterion? (a) a constraint (b) a criterion
32. 32.🪝 A well winch has a handle (wheel) of radius 8 cm turning an axle of radius 1 cm. What is its mechanical advantage (MA)?
33. 33.True or false: a cooking pot handle needs a waterproof material. (a) True (b) False
34. 34.📋 Criterion: the model bridge must hold at least 200 g. In the test it held 50 g. Does it meet the criterion? (a) Yes (b) No
35. 35.🧱 Is steel an electrical conductor or an insulator? (a) an insulator (b) a conductor
36. 36.🪢 Tension or compression: a tall bridge tower? (a) compression (b) tension
37. 37.🔍 Which is the odd one out? (a) keep ice for 1 hour (b) roll at least 2 metres (c) lift a cup of water (d) spend at most ₹100
38. 38.⚖️ A lever bar balances. The load is ? N at 20 cm from the fulcrum. The effort is 160 N at 80 cm from the fulcrum on the other side. What is the missing force in newtons?
39. 39.📋 Criterion: the model bridge must hold at least 200 g. In the test it held 100 g. Does it meet the criterion? (a) Yes (b) No
40. 40.True or false: an electrical engineer plans a space mission. (a) False (b) True

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