Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 12 · 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.📐 A model car is drawn so that 1 cm stands for 20 cm. The car is 5 cm long in the drawing. How long is the real car, in centimetres?
2. 2.⚖️ Along a straight bar, measured from the left end, the effort is at 20 cm, the fulcrum at 50 cm and the load at 80 cm. Which class of lever is it? (a) class 3 (b) class 2 (c) class 1
3. 3.🏚️ Three solid model towers are made of the same material. Tower A is 30 cm tall on a 10 cm wide base, tower B is 20 cm tall on a 10 cm base and tower C is 200 cm tall on a 40 cm base. Which is the hardest to tip over? (a) tower B (b) tower C (c) tower A
4. 4.🤝 In a design team, who tracks what is used up? (a) tester (b) team leader (c) builder (d) materials manager
5. 5.Which of these makes a building safer in earthquakes? (a) building tall and narrow (b) adding steel to concrete (c) using a heavy roof (d) stacking loose bricks
6. 6.True or false: a microscope helps people store water for summer. (a) True (b) False
7. 7.📐 On a plan, 1 cm stands for 5 m. A wall is 18 cm long on the plan. How long is the real wall, in metres?
8. 8.True or false: to cut away from your body is not safe. (a) True (b) False
9. 9.🔍 Which is the odd one out? (a) graphite (b) plastic (c) copper (d) steel
10. 10.🪢 A beam rests on two supports and is pressed down in the middle. Its bottom edge is … (a) stretched (tension) (b) squeezed (compression) (c) not affected (d) twisted
11. 11.True or false: a yoga mat needs a flexible material. (a) False (b) True
12. 12.True or false: a computer engineer keeps data safe online. (a) False (b) True
13. 13.Which need does a train meet? (a) make water safe to drink (b) talk to someone far away (c) carry many people far (d) make power from sunlight
14. 14.🪝 A well winch has a handle (wheel) of radius 6 cm turning an axle of radius 2 cm. What is its mechanical advantage (MA)?
15. 15.Which of these happens in the Ask step? (a) try it out (b) build the model (c) define the problem (d) follow the plan to build
16. 16.⚖️ A seesaw balances. Zoya (? N) sits 4 m from the pivot on one side; Arjun (760 N) sits 3 m from the pivot on the other side. What is the missing weight in newtons?
17. 17.🔄 Which design-process step is it to list the materials? (a) Plan (b) Create (c) Ask (d) Improve
18. 18.🛞 Is friction helpful or a problem here: walking without slipping? (a) helpful (b) a problem
19. 19.🔍 Which is the odd one out? (a) a wheel on ball bearings (b) chalk on a gym bar (c) skating on ice (d) powder on a carrom board
20. 20.🤝 A team of 3 shares 18 equal jobs fairly. Each job takes 10 minutes. How many minutes does each person work?
21. 21.🔺 One side of a straw bridge is a row of 6 triangles standing point-up and point-down in turn, each sharing a side with the next. How many straws does it use?
22. 22.📐 A beam is 370 cm long. How long is it in metres? =
23. 23.📐 On a plan, 1 cm stands for 5 m. A real bridge is 65 m long. How long is it on the plan, in centimetres?
24. 24.⚙️ Which simple machine is a claw hammer on a nail? (a) inclined plane (b) screw (c) pulley (d) lever
25. 25.🪢 Tension is a force that … (a) turns things (b) pushes or squeezes (c) pulls or stretches (d) heats things
26. 26.🧑‍🔧 Which branch of engineering uses engineering to help doctors? (a) aerospace (b) civil (c) biomedical (d) electrical
27. 27.True or false: a pair of scissors is a class 2 lever (load in the middle). (a) False (b) True
28. 28.Which of these happens in the Create step? (a) follow the plan to build (b) ask who will use it (c) pick the build order (d) fix the weak part
29. 29.🔍 Which is the odd one out? (a) fit on a school desk (b) finish in 40 minutes (c) be under 30 cm tall (d) hold up 500 g
30. 30.🪢 A concrete slab weighing 15200 N rests evenly on 8 identical pillars. What compression force does each pillar carry, in newtons?
31. 31.True or false: opening a drawer is a pull. (a) True (b) False
32. 32.🏋️ Pushing a crate 2 m took 460 J of work. What force was used, in newtons?
33. 33.🤝 A team of 3 shares 18 equal jobs fairly. Each job takes 6 minutes. How many minutes does each person work?
34. 34.🧑‍🔧 Which kind of engineer designs electric motors? (a) aerospace (b) electrical (c) computer (d) civil
35. 35.Which job does an electrical engineer do? (a) designs electric motors (b) runs a fertiliser plant (c) builds rockets (d) designs car engines
36. 36.Which need does a lift meet? (a) cross a wide river (b) talk to someone far away (c) make water safe to drink (d) reach a top floor fast
37. 37.🏋️ A 1 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
38. 38.🏋️ A machine lifts a load of 1200 N when you push with 200 N. What is its mechanical advantage (MA)?
39. 39.Which of these needs a transparent material? (a) a tea flask lining (b) a window pane (c) a hair band (d) a yoga mat
40. 40.🔍 Which is the odd one out? (a) touch a hot glue tip (b) put tools back after use (c) cut away from your body (d) wear safety goggles

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