Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 271 · 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 material is best for the core of an electric wire? (a) rubber (b) copper (c) wood (d) glass
2. 2.🪝 A bucket weighing 410 N is lifted with a single fixed pulley at the top of a well. What effort is needed, in newtons? (ideal pulley, no friction)
3. 3.True or false: sunlight is a renewable energy source. (a) False (b) True
4. 4.True or false: to brainstorm many ideas is the Imagine step. (a) False (b) True
5. 5.🏋️ A smooth ramp is 18 m long and rises 3 m. What effort pushes a 3600 N box up it, in newtons? (ideal ramp, no friction)
6. 6.True or false: a truck loading ramp is an inclined plane. (a) False (b) True
7. 7.🧪 A paper bridge was tested three times. It held 320 g, 120 g and 220 g. What is the mean (average) load it held, in grams?
8. 8.📐 How many metres are in 1 kilometre? (a) 100 (b) 10 (c) 1000 (d) 10000
9. 9.🪝 A well winch has a handle (wheel) of radius 16 cm turning an axle of radius 4 cm. What is its mechanical advantage (MA)?
10. 10.💪 Which can a force NOT do? (a) stop it moving (b) start it moving (c) change its shape (d) change its colour
11. 11.🛞 Is friction helpful or a problem here: brakes stopping a cycle? (a) helpful (b) a problem
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 100 g and design C held 150 g. Which design was the weakest? (a) design A (b) design B (c) design C
13. 13.🔍 Which is the odd one out? (a) a steering wheel (b) a water tap handle (c) a well winch handle (d) a well-bucket rope wheel
14. 14.True or false: “use only paper and tape” is a criterion (a goal). (a) True (b) False
15. 15.🤝 A team plans for 10 minutes, builds for 15 minutes and then tests for 10 minutes, one after another. How many minutes is that in all?
16. 16.What does the builder do? (a) keeps the team on track (b) cuts and joins parts (c) tracks what is used up (d) collects the supplies
17. 17.🏋️ A force of 440 N pushes a cart 8 m along the floor. How much work is done, in joules?
18. 18.📋 Constraint: the tower must be no taller than 40 cm. The team’s tower is 36 cm tall. Is it within the constraint? (a) Yes (b) No
19. 19.⚙️ A screw is really … (a) a kind of wheel (b) a bent lever (c) a tiny pulley (d) a ramp wrapped round
20. 20.Which of these is in compression (pushed)? (a) a tow rope on a car (b) a crane lifting cable (c) a swing chain (d) a tall bridge tower
21. 21.🤝 Is it good or poor teamwork to hide a mistake? (a) poor teamwork (b) good teamwork
22. 22.⚖️ What is the pivot point of a lever called? (a) the axle (b) the fulcrum (c) the load (d) the effort
23. 23.True or false: a computer engineer designs power lines. (a) True (b) False
24. 24.True or false: a brick at a wall base is in compression (pushed). (a) False (b) True
25. 25.Which of these is a wedge? (a) a water tap handle (b) a wheelchair ramp (c) a chisel (d) a seesaw
26. 26.🏋️ A force of 400 N pushes a cart 8 m along the floor. How much work is done, in joules?
27. 27.Which of these is a beam bridge? (a) pushes out on its ends (b) good for short gaps (c) stones squeezed together (d) the longest spans of all
28. 28.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: ice 1 N, a glass sheet 5 N, a carpet 6 N, sandpaper 9 N. Which surface gave the least friction? (a) a glass sheet (b) sandpaper (c) a carpet (d) ice
29. 29.♻️ Reduce, reuse or recycle: pulp old paper? (a) reduce (b) recycle (c) reuse
30. 30.Which of these is a suspension bridge? (a) a log across a stream (b) pushes out on its ends (c) the simplest bridge (d) a rope bridge in hills
31. 31.Which job does a mechanical engineer do? (a) plans a space mission (b) designs artificial limbs (c) builds a website (d) designs car engines
32. 32.True or false: to ignore the team plan is good teamwork. (a) True (b) False
33. 33.⚖️ A lever bar balances. The load is ? N at 20 cm from the fulcrum. The effort is 60 N at 70 cm from the fulcrum on the other side. What is the missing force in newtons?
34. 34.📐 A model car is drawn so that 1 cm stands for 10 cm. The car is 4 cm long in the drawing. How long is the real car, in centimetres?
35. 35.🤝 Is it good or poor teamwork to give kind feedback? (a) poor teamwork (b) good teamwork
36. 36.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
37. 37.True or false: “use at most 20 straws” is a constraint (a limit). (a) False (b) True
38. 38.True or false: pulling up your socks is a push. (a) True (b) False
39. 39.⚖️ Which class of lever is a fishing rod? (a) class 2 (b) class 1 (c) class 3
40. 40.⚖️ A lever bar balances. The load is 320 N at 20 cm from the fulcrum. The effort is ? N at 80 cm from the fulcrum on the other side. What is the missing force in newtons?

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