Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 249 · 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.📐 On a plan, 1 cm stands for 20 m. A real bridge is 220 m long. How long is it on the plan, in centimetres?
2. 2.🧑‍🔧 Which kind of engineer wires a new building? (a) civil (b) electrical (c) biomedical (d) aerospace
3. 3.🪝 Fixed or movable pulley: which one halves the effort? (a) a movable pulley (b) a fixed pulley
4. 4.True or false: a crane arm uses an arch. (a) True (b) False
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 350 g and design C held 400 g. Which design was the strongest? (a) design A (b) design B (c) design C
6. 6.⚖️ Going along a lever from one end to the other, the order is: load, effort, fulcrum. Which class of lever is it? (a) class 1 (b) class 3 (c) class 2
7. 7.🔍 Which is the odd one out? (a) a smooth steel slide (b) powder on a carrom board (c) sand on a slippery path (d) a wet tiled floor
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 280 g and design C held 330 g. Which design was the weakest? (a) design A (b) design C (c) design B
9. 9.🔧 Which tool would you use to turn a screw? (a) a protractor (b) pliers (c) sandpaper (d) a screwdriver
10. 10.🏚️ Three solid model towers are made of the same material. Tower A is 120 cm tall on a 30 cm wide base, tower B is 60 cm tall on a 20 cm base and tower C is 150 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower A (b) tower B (c) tower C
11. 11.True or false: to smooth a rough edge, use a saw. (a) False (b) True
12. 12.💪 Is pressing a doorbell a push or a pull? (a) a push (b) a pull
13. 13.🏋️ A force of 180 N pushes a cart 2 m along the floor. How much work is done, in joules?
14. 14.🏋️ Can a simple machine reduce the work done? (a) yes, by half (b) no, work stays the same (c) only on Mondays (d) yes, always
15. 15.⚖️ A seesaw balances. Zoya (280 N) sits 2 m from the pivot on one side; Ravi (280 N) sits ? m from the pivot on the other side. What is the missing distance in metres?
16. 16.True or false: a skipping rope needs a flexible material. (a) False (b) True
17. 17.🛞 Is friction helpful or a problem here: walking without slipping? (a) a problem (b) helpful
18. 18.True or false: a seashell is made by engineers. (a) False (b) True
19. 19.Which of these needs a transparent material? (a) a roof sheet (b) a hair band (c) a water tank (d) a window pane
20. 20.True or false: an electrical engineer wires a new building. (a) True (b) False
21. 21.Which of these makes a building less safe in earthquakes? (a) leaving out steel bars (b) using flexible joints (c) adding steel to concrete (d) using a light roof
22. 22.🪝 Fixed or movable pulley: which one needs effort = load? (a) a movable pulley (b) a fixed pulley
23. 23.🪝 A wheel and axle is a big wheel fixed to … (a) a smaller rod (axle) (b) a loose rope (c) a flat ramp (d) a sharp wedge
24. 24.True or false: “stones squeezed together” is an arch bridge. (a) False (b) True
25. 25.🛠️ Is a seashell made by engineers or found in nature? (a) made by engineers (b) found in nature
26. 26.♻️ A project report has 40 pages. How many sheets of paper are needed if it is printed on both sides of each sheet?
27. 27.⚖️ A seesaw balances. Asha (? N) sits 3 m from the pivot on one side; Meena (510 N) sits 1 m from the pivot on the other side. What is the missing weight in newtons?
28. 28.True or false: building tall and narrow makes a building less safe in earthquakes. (a) True (b) False
29. 29.True or false: a movable pulley makes you pull 2× rope. (a) True (b) False
30. 30.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: sandpaper 11 N, ice 3 N, a glass sheet 7 N, a carpet 9 N. Which surface gave the least friction? (a) sandpaper (b) a carpet (c) a glass sheet (d) ice
31. 31.🏋️ Pushing a crate 9 m took 810 J of work. What force was used, in newtons?
32. 32.🏋️ A force of 220 N pushes a cart 10 m along the floor. How much work is done, in joules?
33. 33.Which of these needs a transparent material? (a) a skipping rope (b) a magnifier lens (c) a water tank (d) a boat hull
34. 34.🧑‍🔧 Which kind of engineer designs knee implants? (a) mechanical (b) chemical (c) biomedical (d) aerospace
35. 35.📋 Your team’s budget is ₹46. You must buy one roll of tape for ₹10. Straws cost ₹3 each. What is the greatest number of straws you can buy?
36. 36.🧑‍🔧 Which kind of engineer plans a dam? (a) mechanical (b) chemical (c) biomedical (d) civil
37. 37.🧱 Which property matters most for a yoga mat? (a) transparent (b) waterproof (c) flexible (d) electrical conductor
38. 38.🔧 Which tool would you use to smooth a rough edge? (a) a spirit level (b) a tape measure (c) sandpaper (d) pliers
39. 39.⚙️ Most simple machines make work easier by letting us … (a) stop all friction (b) switch off gravity (c) use a smaller force (d) make new energy
40. 40.🧱 Which property matters most for a raincoat? (a) waterproof (b) electrical conductor (c) flexible (d) heat insulator

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