Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 320 · 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 class of lever is a bottle opener? (a) class 2 (b) class 1 (c) class 3
2. 2.⚖️ In a class 2 lever, what is in the middle? (a) the effort (b) the load (c) the axle (d) the fulcrum
3. 3.⚖️ A lever balances when … (a) turning effects match (b) the fulcrum moves (c) both weights are equal (d) the bar is short
4. 4.🔍 Which is the odd one out? (a) a swing chain (b) a tow rope on a car (c) a hanging lamp chain (d) a brick at a wall base
5. 5.🔢 To follow the engineering design process, which comes first: “Imagine” or “Ask”? (a) Imagine (b) Ask
6. 6.True or false: a movable pulley hangs on the rope loop. (a) True (b) False
7. 7.🧑‍🔧 Which kind of engineer writes app software? (a) biomedical (b) aerospace (c) computer (d) chemical
8. 8.🪝 Fixed or movable pulley: which one needs effort = load? (a) a fixed pulley (b) a movable pulley
9. 9.Which of these is in tension (pulled)? (a) a suspension cable (b) a brick at a wall base (c) a bridge pier (d) a stone in an arch
10. 10.💪 Which force is at work: a compass needle turns? (a) gravity (b) friction (c) muscular force (d) magnetic force
11. 11.🏋️ Work is done when a force moves something … (a) only upwards (b) very slowly (c) without moving it (d) through a distance
12. 12.True or false: to help a stuck teammate is good teamwork. (a) False (b) True
13. 13.True or false: a water tank needs a waterproof material. (a) False (b) True
14. 14.🌉 A beam bridge is 135 m long. Piers split it into equal spans of 45 m. How many spans are there?
15. 15.Which of these needs a flexible material? (a) a yoga mat (b) a tea flask lining (c) the core of a wire (d) an oven glove
16. 16.📋 Your team’s budget is ₹50. You must buy one roll of tape for ₹20. Straws cost ₹1 each. What is the greatest number of straws you can buy?
17. 17.⚙️ A screw is really … (a) a ramp wrapped round (b) a bent lever (c) a kind of wheel (d) a tiny pulley
18. 18.🪢 A beam rests on two supports and is pressed down in the middle. Its bottom edge is … (a) not affected (b) twisted (c) squeezed (compression) (d) stretched (tension)
19. 19.⚖️ A lever bar balances. The load is 320 N at 20 cm from the fulcrum. The effort is 80 N at ? cm from the fulcrum on the other side. What is the missing distance in centimetres?
20. 20.📐 Why do engineers use scale drawings? (a) to hide sizes (b) big things fit on paper (c) to make them pretty (d) to save ink only
21. 21.True or false: to smooth a rough edge, use a hand drill. (a) True (b) False
22. 22.💪 Is plucking a mango a push or a pull? (a) a push (b) a pull
23. 23.🔧 Which tool would you use to cut a wooden plank? (a) a spirit level (b) a hammer (c) a saw (d) sandpaper
24. 24.🦺 What protects your eyes when sawing or drilling? (a) sunglasses (b) nothing (c) a cap (d) safety goggles
25. 25.🏋️ A force of 110 N pushes a cart 4 m along the floor. How much work is done, in joules?
26. 26.📋 A design meets every criterion but costs more than the budget. Is it acceptable? (a) no, it breaks a limit (b) only if it is red (c) yes, it works (d) yes, always
27. 27.🏚️ Why are flexible joints good in an earthquake? (a) they bend, not break (b) they stop shaking (c) they look nice (d) they are cheap
28. 28.🔍 Which is the odd one out? (a) hold up 500 g (b) lift a cup of water (c) use only paper and tape (d) stand in a fan breeze
29. 29.True or false: a mechanical engineer designs factory machines. (a) True (b) False
30. 30.🪝 More rope sections holding a load means … (a) the load floats (b) no change (c) more effort needed (d) less effort needed
31. 31.🤝 Is it good or poor teamwork to listen to every idea? (a) good teamwork (b) poor teamwork
32. 32.🧱 Is dry wood an electrical conductor or an insulator? (a) a conductor (b) an insulator
33. 33.🌉 Which bridge type: “a curve under the deck”? (a) beam bridge (b) suspension bridge (c) arch bridge
34. 34.📐 On a plan, 1 cm stands for 10 m. A real bridge is 60 m long. How long is it on the plan, in centimetres?
35. 35.🔺 A flat frame has 12 straight sides joined by loose pins at the corners. What is the least number of corner-to-corner braces needed to make it rigid?
36. 36.⚙️ A wedge is … (a) a wheel on a rod (b) a rope on a wheel (c) two ramps back to back (d) a bar on a pivot
37. 37.Which of these is a pulley? (a) a well-bucket rope wheel (b) a road up a hill (c) a screw jack (d) a bottle opener
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 170 g and design C held 220 g. Which design was the weakest? (a) design C (b) design B (c) design A
39. 39.🤝 In a design team, who puts the model together? (a) materials manager (b) team leader (c) tester (d) builder
40. 40.🏋️ A longer ramp to the same height needs … (a) less effort (b) no effort (c) the same effort (d) more effort

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