Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 521 · 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.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) choose and draw one (b) sketch three ideas
2. 2.🔺 How do engineers stop a square frame from wobbling? (a) take off a side (b) paint it (c) make it bigger (d) add a diagonal brace
3. 3.📋 For a model bridge challenge, is “spend at most ₹100” a constraint or a criterion? (a) a constraint (b) a criterion
4. 4.Which of these makes a building safer in earthquakes? (a) making brittle joints (b) using flexible joints (c) using a heavy roof (d) stacking loose bricks
5. 5.🔍 Which is the odd one out? (a) a box pushed on carpet (b) a grippy rubber sole (c) a smooth steel slide (d) a rough doormat
6. 6.🔧 Which tool would you use to grip and bend wire? (a) a tape measure (b) a hammer (c) pliers (d) a saw
7. 7.🔍 Which is the odd one out? (a) cut towards your hand (b) run while holding tools (c) leave tools on the floor (d) wear safety goggles
8. 8.True or false: a mechanical engineer designs factory machines. (a) True (b) False
9. 9.🔍 Which is the odd one out? (a) a hanging lamp chain (b) a temple column (c) a tall bridge tower (d) a bridge pier
10. 10.♻️ Reduce, reuse or recycle: pulp old paper? (a) reduce (b) reuse (c) recycle
11. 11.🛞 More or less friction: a rough doormat? (a) more friction (b) less friction
12. 12.🔺 A flat frame has 9 straight sides joined by loose pins at the corners. What is the least number of corner-to-corner braces needed to make it rigid?
13. 13.📐 How many centimetres are in 1 metre? (a) 100 (b) 1000 (c) 60 (d) 10
14. 14.Which of these is a beam bridge? (a) a curve under the deck (b) a flat deck on piers (c) stones squeezed together (d) tall towers hold cables
15. 15.🔍 Which is the odd one out? (a) let adults use hot glue (b) carry scissors closed (c) put tools back after use (d) leave tools on the floor
16. 16.🛞 Which surface gives the MOST friction to a sliding block? (a) glass (b) ice (c) polished marble (d) sandpaper
17. 17.Which of these happens in the Imagine step? (a) follow the plan to build (b) try it out (c) dream up possible fixes (d) build the model
18. 18.Which of these happens in the Test step? (a) check it against goals (b) follow the plan to build (c) brainstorm many ideas (d) dream up possible fixes
19. 19.🏋️ A force of 460 N did 460 J of work. How many metres did the object move?
20. 20.🔍 Which is the odd one out? (a) a water tap handle (b) a round doorknob (c) a road up a hill (d) a well winch handle
21. 21.⚖️ A lever balances when … (a) both weights are equal (b) the bar is short (c) the fulcrum moves (d) turning effects match
22. 22.True or false: using flexible joints makes a building safer in earthquakes. (a) True (b) False
23. 23.🛞 Rubbing your hands fast makes them … (a) wet (b) cold (c) magnetic (d) warm
24. 24.♻️ Reduce, reuse or recycle: switch off unused lights? (a) recycle (b) reduce (c) reuse
25. 25.🦺 What protects your eyes when sawing or drilling? (a) nothing (b) sunglasses (c) a cap (d) safety goggles
26. 26.🌉 Which bridge type: “cables tied down at ends”? (a) suspension bridge (b) beam bridge (c) arch bridge
27. 27.🪝 A well winch has a handle (wheel) of radius 30 cm turning an axle of radius 5 cm. What is its mechanical advantage (MA)?
28. 28.🔍 Which is the odd one out? (a) a claw hammer on a nail (b) a bottle opener (c) a nutcracker (d) a chisel
29. 29.💪 Which force is at work: rubbing hands warms them? (a) gravity (b) friction (c) muscular force (d) magnetic force
30. 30.True or false: a tug of war is a pull. (a) False (b) True
31. 31.🔢 To follow the engineering design process, which is the FIRST step? (a) Create (b) Imagine (c) Ask (d) Improve
32. 32.⚖️ On a seesaw, a heavier child should sit … (a) closer to the pivot (b) anywhere (c) on the pivot (d) farther from the pivot
33. 33.True or false: a telephone helps people carry many people far. (a) False (b) True
34. 34.🏚️ Where should heavy water tanks go in a quake zone? (a) on the very top (b) on a thin pole (c) hanging outside (d) low down
35. 35.🪝 A load of 630 N hangs from a pulley system in which 3 rope sections hold up the load. What effort is needed, in newtons? (ideal pulleys)
36. 36.🔄 After testing, a design does not work well. What comes next? (a) Improve (b) Imagine (c) Ask (d) give up
37. 37.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a carpet 11 N, sandpaper 15 N, ice 3 N, a wooden plank 7 N. Which surface gave the most friction? (a) sandpaper (b) a wooden plank (c) a carpet (d) ice
38. 38.⚙️ Most simple machines make work easier by letting us … (a) make new energy (b) stop all friction (c) switch off gravity (d) use a smaller force
39. 39.🛞 More or less friction: skating on ice? (a) more friction (b) less friction
40. 40.🔺 Which strong shape does a curved stone doorway use? (a) triangle (b) dome (c) beam (d) arch

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