Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 109 · 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.🔧 Which tool would you use to turn a screw? (a) a spanner (b) a screwdriver (c) pliers (d) a spirit level
2. 2.🔢 To follow the engineering design process, which comes first: “Ask” or “Plan”? (a) Plan (b) Ask
3. 3.🪝 A winch has a wheel of radius 40 cm and an axle of radius 5 cm. What effort on the wheel lifts an 800 N bucket on the axle, in newtons? (ideal)
4. 4.🔍 Which is the odd one out? (a) a banyan tree (b) a dam (c) a cloud (d) a waterfall
5. 5.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: sandpaper 6 N, ice 1 N, a glass sheet 2 N, a carpet 3 N. Which surface gave the least friction? (a) a carpet (b) ice (c) sandpaper (d) a glass sheet
6. 6.True or false: hitting a cricket ball is a pull. (a) True (b) False
7. 7.🔍 Which is the odd one out? (a) an axe blade (b) a wheelchair ramp (c) a road up a hill (d) a truck loading ramp
8. 8.🛞 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 10 N, a glass sheet 3 N. Which surface gave the most friction? (a) a wooden plank (b) a carpet (c) sandpaper (d) a glass sheet
9. 9.⚙️ Which simple machine is a playground slide? (a) lever (b) screw (c) inclined plane (d) wheel and axle
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 270 g and design C held 370 g. Which design was the weakest? (a) design A (b) design C (c) design B
11. 11.📋 Your team’s budget is ₹125. You must buy one roll of tape for ₹10. Straws cost ₹5 each. What is the greatest number of straws you can buy?
12. 12.True or false: to use a new load each time is poor testing. (a) True (b) False
13. 13.🪝 A winch has a wheel of radius 5 cm and an axle of radius 1 cm. What effort on the wheel lifts a 950 N bucket on the axle, in newtons? (ideal)
14. 14.⚖️ A lever bar balances. The load is 120 N at 40 cm from the fulcrum. The effort is 240 N at ? cm from the fulcrum on the other side. What is the missing distance in centimetres?
15. 15.Which need does a bridge meet? (a) go through a mountain (b) store water for summer (c) make water safe to drink (d) cross a wide river
16. 16.📋 For a model bridge challenge, is “fit on a school desk” a constraint or a criterion? (a) a criterion (b) a constraint
17. 17.Which of these is in tension (pulled)? (a) a stone in an arch (b) a table leg (c) a stretched rubber band (d) a temple column
18. 18.🔺 Which strong shape does a truss bridge side use? (a) beam (b) arch (c) dome (d) triangle
19. 19.🪢 A stage stands on 8 identical legs and each leg is squeezed with 925 N. What is the total load on the stage, in newtons?
20. 20.🏋️ Pushing a crate 3 m took 930 J of work. What force was used, in newtons?
21. 21.🧱 Is rubber an electrical conductor or an insulator? (a) an insulator (b) a conductor
22. 22.🪢 Tension or compression: a stretched rubber band? (a) compression (b) tension
23. 23.True or false: to check it against goals is the Imagine step. (a) False (b) True
24. 24.True or false: plucking a mango is a pull. (a) True (b) False
25. 25.True or false: your forearm is a class 3 lever (effort in the middle). (a) False (b) True
26. 26.⚖️ Along a straight bar, measured from the left end, the effort is at 30 cm, the fulcrum at 40 cm and the load at 70 cm. Which class of lever is it? (a) class 1 (b) class 2 (c) class 3
27. 27.⚖️ What is the pivot point of a lever called? (a) the load (b) the effort (c) the fulcrum (d) the axle
28. 28.🔍 Which is the odd one out? (a) raising heavy tanks high (b) using flexible joints (c) having a wide base (d) fitting rubber base pads
29. 29.🏋️ Mechanical advantage (MA) = … (a) load + effort (b) effort ÷ load (c) load × effort (d) load ÷ effort
30. 30.Which of these needs a heat insulator? (a) a car windscreen (b) an umbrella cover (c) an oven glove (d) a skipping rope
31. 31.True or false: petrol is a non-renewable energy source. (a) True (b) False
32. 32.True or false: adding cross bracing makes a building less safe in earthquakes. (a) True (b) False
33. 33.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
34. 34.🏋️ A 13 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
35. 35.📐 A beam is 250 cm long. How long is it in metres? =
36. 36.Which of these is a beam bridge? (a) a flat deck on piers (b) cables tied down at ends (c) deck hangs from cables (d) pushes out on its ends
37. 37.🏚️ Three solid model towers are made of the same material. Tower A is 40 cm tall on a 10 cm wide base, tower B is 30 cm tall on a 10 cm base and tower C is 50 cm tall on a 10 cm base. Which is the hardest to tip over? (a) tower C (b) tower B (c) tower A
38. 38.🔢 To follow the engineering design process, which comes first: “Test” or “Ask”? (a) Ask (b) Test
39. 39.🏚️ Three solid model towers are made of the same material. Tower A is 50 cm tall on a 10 cm wide base, tower B is 120 cm tall on a 30 cm base and tower C is 210 cm tall on a 30 cm base. Which is the hardest to tip over? (a) tower C (b) tower B (c) tower A
40. 40.📋 Your team’s budget is ₹32. You must buy one roll of tape for ₹5. Straws cost ₹1 each. What is the greatest number of straws you can buy?

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