Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 873 · 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.True or false: powder on a carrom board gives more friction. (a) True (b) False
2. 2.⚖️ In a class 2 lever, what is in the middle? (a) the fulcrum (b) the axle (c) the load (d) the effort
3. 3.True or false: the core of a wire needs a transparent material. (a) False (b) True
4. 4.🪢 Which material is good in tension but useless in compression? (a) a rope (b) a concrete block (c) a stone (d) a brick
5. 5.🧱 Which material is best for a cooking pot handle? (a) aluminium (b) iron (c) copper (d) wood or plastic
6. 6.📐 On a plan, 1 cm stands for 20 m. A real bridge is 360 m long. How long is it on the plan, in centimetres?
7. 7.True or false: to agree before changing is good teamwork. (a) False (b) True
8. 8.🔍 Which is the odd one out? (a) a smooth steel slide (b) chalk on a gym bar (c) a grippy rubber sole (d) a rough doormat
9. 9.⚖️ Going along a lever from one end to the other, the order is: load, fulcrum, effort. Which class of lever is it? (a) class 3 (b) class 1 (c) class 2
10. 10.🌉 What holds up a long beam bridge in the middle? (a) balloons (b) cables only (c) piers (d) nothing
11. 11.🔍 Which is the odd one out? (a) tie back long hair (b) run while holding tools (c) touch a hot glue tip (d) use a cracked tool
12. 12.True or false: an electrical engineer builds rockets. (a) False (b) True
13. 13.🪝 A wheel and axle is a big wheel fixed to … (a) a smaller rod (axle) (b) a sharp wedge (c) a flat ramp (d) a loose rope
14. 14.🔍 Which is the odd one out? (a) a bridge (b) a coral reef (c) a cloud (d) a seashell
15. 15.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a carpet 9 N, sandpaper 10 N, ice 4 N, a glass sheet 8 N. How many newtons more were needed on sandpaper than on ice?
16. 16.Which of these makes a building safer in earthquakes? (a) adding cross bracing (b) using a heavy roof (c) raising heavy tanks high (d) stacking loose bricks
17. 17.True or false: to ignore the team plan is good teamwork. (a) False (b) True
18. 18.🪝 Fixed or movable pulley: which one is on a flagpole top? (a) a movable pulley (b) a fixed pulley
19. 19.🪝 Fixed or movable pulley: which one needs effort = load? (a) a movable pulley (b) a fixed pulley
20. 20.🏋️ In which unit is work measured? (a) metre (m) (b) joule (J) (c) newton (N) (d) watt hour
21. 21.🏋️ A force of 410 N pushes a cart 2 m along the floor. How much work is done, in joules?
22. 22.🏋️ A machine lifts a load of 20 N when you push with 10 N. What is its mechanical advantage (MA)?
23. 23.🔺 A frame shaped like a square is made of straws joined by loose pins, with 1 corner-to-corner brace. Is it rigid or wobbly? (a) rigid (b) wobbly
24. 24.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a glass sheet 1 N, a wooden plank 5 N, a carpet 8 N, sandpaper 10 N. How many newtons more were needed on sandpaper than on a glass sheet?
25. 25.🏋️ A machine lifts a load of 850 N when you push with 170 N. What is its mechanical advantage (MA)?
26. 26.🪢 A sign weighing 540 N hangs from 3 identical vertical ropes that share the load equally. What is the tension in each rope, in newtons?
27. 27.True or false: a window pane needs a waterproof material. (a) True (b) False
28. 28.💪 Is closing a drawer a push or a pull? (a) a push (b) a pull
29. 29.True or false: “float for 1 minute” is a criterion (a goal). (a) False (b) True
30. 30.True or false: to use a new load each time is poor testing. (a) False (b) True
31. 31.True or false: “fit on a school desk” is a criterion (a goal). (a) False (b) True
32. 32.Which of these happens in the Ask step? (a) try it out (b) find the limits (c) check it against goals (d) measure its performance
33. 33.🧱 Which material is best for a raincoat? (a) plastic-coated cloth (b) cardboard (c) cotton wool (d) paper
34. 34.🔢 To follow the engineering design process, what comes right after “Create”? (a) Test (b) Ask (c) Plan (d) Imagine
35. 35.🤝 In a design team, who puts the model together? (a) builder (b) team leader (c) materials manager (d) tester
36. 36.🌉 Which bridge type: “deck hangs from cables”? (a) arch bridge (b) suspension bridge (c) beam bridge
37. 37.Which of these is a beam bridge? (a) a curve under the deck (b) pushes out on its ends (c) stones squeezed together (d) a log across a stream
38. 38.⚖️ Going along a lever from one end to the other, the order is: effort, fulcrum, load. Which class of lever is it? (a) class 3 (b) class 2 (c) class 1
39. 39.🏚️ Why are flexible joints good in an earthquake? (a) they look nice (b) they bend, not break (c) they stop shaking (d) they are cheap
40. 40.📋 Constraint: the tower must be no taller than 60 cm. The team’s tower is 62 cm tall. Is it within the constraint? (a) Yes (b) No

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