Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 49 · 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.♻️ Is ocean wave energy a renewable or a non-renewable energy source? (a) non-renewable (b) renewable
2. 2.🔧 Which tool would you use to turn a screw? (a) a protractor (b) a screwdriver (c) pliers (d) a hand drill
3. 3.🪝 A pulley system lifts a 400 N load with an effort of 200 N. What is its mechanical advantage (MA)?
4. 4.True or false: a mechanical engineer designs school networks. (a) True (b) False
5. 5.True or false: a magnifier lens needs an electrical conductor. (a) True (b) False
6. 6.Which of these is in compression (pushed)? (a) a suspension cable (b) a hanging lamp chain (c) a tent guy rope (d) a temple column
7. 7.⚖️ 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
8. 8.Which job does a mechanical engineer do? (a) plans a power grid (b) plans a space mission (c) designs a paint factory (d) designs factory machines
9. 9.Which of these needs a transparent material? (a) a skipping rope (b) a car windscreen (c) a raincoat (d) a switch contact
10. 10.🔍 Which is the odd one out? (a) plastic (b) dry wood (c) steel (d) cotton cloth
11. 11.Which of these uses a beam? (a) a fort gateway (b) a planetarium roof (c) an electric pylon (d) a slab over a canal
12. 12.True or false: to record every result is good testing. (a) True (b) False
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 130 g and design C held 180 g. Which design was the weakest? (a) design B (b) design A (c) design C
14. 14.🤝 Is it good or poor teamwork to give kind feedback? (a) poor teamwork (b) good teamwork
15. 15.📐 On a plan, 1 cm stands for 5 m. A real bridge is 30 m long. How long is it on the plan, in centimetres?
16. 16.♻️ A sustainable design … (a) lasts one day (b) wastes water (c) uses the most plastic (d) protects the future
17. 17.True or false: kicking a football is a pull. (a) False (b) True
18. 18.📐 A model car is drawn so that 1 cm stands for 40 cm. The car is 12 cm long in the drawing. How long is the real car, in centimetres?
19. 19.🪝 A load of 150 N hangs from a pulley system in which 3 rope sections hold up the load. What effort is needed, in newtons? (ideal pulleys)
20. 20.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: sandpaper 8 N, a glass sheet 1 N, a wooden plank 2 N, a carpet 4 N. Which surface gave the least friction? (a) sandpaper (b) a wooden plank (c) a carpet (d) a glass sheet
21. 21.🦺 In the workshop, is it safe to put tools back after use? (a) not safe (b) safe
22. 22.🏚️ Why are flexible joints good in an earthquake? (a) they look nice (b) they stop shaking (c) they bend, not break (d) they are cheap
23. 23.🛞 More or less friction: a wheel on ball bearings? (a) more friction (b) less friction
24. 24.⚖️ Which class of lever is a pair of pliers? (a) class 2 (b) class 3 (c) class 1
25. 25.🌉 Which bridge type: “cables tied down at ends”? (a) arch bridge (b) beam bridge (c) suspension bridge
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 310 g and design C held 260 g. Which design was the weakest? (a) design C (b) design B (c) design A
27. 27.True or false: a pair of pliers is a class 2 lever (load in the middle). (a) True (b) False
28. 28.True or false: to laugh at ideas is poor teamwork. (a) True (b) False
29. 29.🔢 To follow the engineering design process, what comes right after “Plan”? (a) Imagine (b) Improve (c) Ask (d) Create
30. 30.True or false: to grip and bend wire, use a saw. (a) False (b) True
31. 31.🔧 Which tool would you use to measure an angle? (a) a tape measure (b) pliers (c) a screwdriver (d) a protractor
32. 32.🧪 A paper bridge was tested three times. It held 250 g, 150 g and 320 g. What is the mean (average) load it held, in grams?
33. 33.🪝 A wheel and axle is a big wheel fixed to … (a) a loose rope (b) a flat ramp (c) a sharp wedge (d) a smaller rod (axle)
34. 34.📋 For a model bridge challenge, is “finish in 40 minutes” a constraint or a criterion? (a) a constraint (b) a criterion
35. 35.🌉 Which bridge type: “tall towers hold cables”? (a) beam bridge (b) suspension bridge (c) arch bridge
36. 36.True or false: a broom when sweeping is a class 3 lever (effort in the middle). (a) True (b) False
37. 37.🔍 Which is the odd one out? (a) guess, do not measure (b) hide a failed test (c) skip writing results (d) measure the same way
38. 38.🏋️ A force of 220 N pushes a cart 6 m along the floor. How much work is done, in joules?
39. 39.⚖️ Along a straight bar, measured from the left end, the effort is at 90 cm, the fulcrum at 60 cm and the load at 30 cm. Which class of lever is it? (a) class 3 (b) class 1 (c) class 2
40. 40.🤝 How do engineers share a design with others? (a) clear labelled sketches (b) secret notes (c) no drawings at all (d) only talking fast

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