Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 162 · 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.⚖️ Along a straight bar, measured from the left end, the effort is at 0 cm, the fulcrum at 30 cm and the load at 40 cm. Which class of lever is it? (a) class 1 (b) class 3 (c) class 2
2. 2.🔢 To follow the engineering design process, which is the FIRST step? (a) Ask (b) Imagine (c) Improve (d) Plan
3. 3.🧑‍🔧 Which branch of engineering works on aeroplanes and rockets? (a) civil (b) chemical (c) aerospace (d) computer
4. 4.🔺 Which strong shape does an igloo use? (a) arch (b) triangle (c) beam (d) dome
5. 5.📐 On a plan, 1 cm stands for 20 m. A real bridge is 300 m long. How long is it on the plan, in centimetres?
6. 6.📐 On a plan, 1 cm stands for 10 m. A wall is 18 cm long on the plan. How long is the real wall, in metres?
7. 7.⚖️ A seesaw balances. Zoya (? N) sits 3 m from the pivot on one side; Kabir (510 N) sits 4 m from the pivot on the other side. What is the missing weight in newtons?
8. 8.📐 On a plan, 1 cm stands for 5 m. A wall is 12 cm long on the plan. How long is the real wall, in metres?
9. 9.🪝 Fixed or movable pulley: which one rises with the load? (a) a fixed pulley (b) a movable pulley
10. 10.True or false: to build the model is the Imagine step. (a) True (b) False
11. 11.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a carpet 9 N, sandpaper 11 N, a glass sheet 3 N, a wooden plank 5 N. Which surface gave the most friction? (a) a wooden plank (b) a carpet (c) sandpaper (d) a glass sheet
12. 12.🧱 Which property matters most for a boat hull? (a) heat insulator (b) transparent (c) waterproof (d) electrical conductor
13. 13.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
14. 14.⚖️ Which class of lever is a bottle opener? (a) class 1 (b) class 3 (c) class 2
15. 15.💪 Two equal forces push on a box from opposite sides. They are … (a) unbalanced (b) gravity (c) balanced (d) doubled
16. 16.⚖️ A lever bar balances. The load is 630 N at 50 cm from the fulcrum. The effort is ? N at 90 cm from the fulcrum on the other side. What is the missing force in newtons?
17. 17.⚖️ A lever balances when … (a) the fulcrum moves (b) both weights are equal (c) the bar is short (d) turning effects match
18. 18.💪 Which force is at work: rain falls to the ground? (a) muscular force (b) friction (c) magnetic force (d) gravity
19. 19.🔺 One side of a straw bridge is a row of 5 triangles standing point-up and point-down in turn, each sharing a side with the next. How many straws does it use?
20. 20.🔢 To follow the engineering design process, which comes first: “Imagine” or “Test”? (a) Imagine (b) Test
21. 21.🤝 Is it good or poor teamwork to blame others for faults? (a) good teamwork (b) poor teamwork
22. 22.⚖️ A lever bar balances. The load is ? N at 30 cm from the fulcrum. The effort is 30 N at 20 cm from the fulcrum on the other side. What is the missing force in newtons?
23. 23.Which of these uses a beam? (a) a crane arm (b) a shelf on two brackets (c) a roof truss (d) a fort gateway
24. 24.📐 How many centimetres are in 1 metre? (a) 10 (b) 1000 (c) 100 (d) 60
25. 25.🌉 What holds up a long beam bridge in the middle? (a) piers (b) balloons (c) nothing (d) cables only
26. 26.⚖️ In a class 2 lever, what is in the middle? (a) the load (b) the fulcrum (c) the axle (d) the effort
27. 27.🪝 What does a single fixed pulley change? (a) gravity (b) the size of the load (c) the colour of rope (d) the direction of pull
28. 28.True or false: “use only paper and tape” is a criterion (a goal). (a) False (b) True
29. 29.💪 A force is a … (a) unit of time (b) type of sound (c) push or a pull (d) kind of colour
30. 30.🏋️ A smooth ramp is 4 m long and rises 1 m. What effort pushes a 1200 N box up it, in newtons? (ideal ramp, no friction)
31. 31.🔢 To follow the engineering design process, which comes first: “Improve” or “Ask”? (a) Improve (b) Ask
32. 32.🧱 Which material is best for the core of an electric wire? (a) wood (b) glass (c) rubber (d) copper
33. 33.🏚️ Three solid model towers are made of the same material. Tower A is 30 cm tall on a 30 cm wide base, tower B is 40 cm tall on a 20 cm base and tower C is 160 cm tall on a 40 cm base. Which is the hardest to tip over? (a) tower B (b) tower A (c) tower C
34. 34.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) build it with straws (c) strengthen the weak part (d) read the challenge rules
35. 35.True or false: a waterfall is made by engineers. (a) False (b) True
36. 36.🔍 Which is the odd one out? (a) a tow rope on a car (b) a suspension cable (c) a stone in an arch (d) a swing chain
37. 37.Which need does a lift meet? (a) keep food fresh longer (b) reach a top floor fast (c) make water safe to drink (d) store water for summer
38. 38.🏋️ A 6 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
39. 39.⚖️ A seesaw balances. Arjun (280 N) sits ? m from the pivot on one side; Kabir (420 N) sits 2 m from the pivot on the other side. What is the missing distance in metres?
40. 40.📐 A model car is drawn so that 1 cm stands for 20 cm. The car is 15 cm long in the drawing. How long is the real car, in centimetres?

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