Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 937 · 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.True or false: a pair of pliers is a class 1 lever (fulcrum in the middle). (a) True (b) False
2. 2.🏚️ Why are flexible joints good in an earthquake? (a) they bend, not break (b) they are cheap (c) they stop shaking (d) they look nice
3. 3.🪝 A winch has a wheel of radius 15 cm and an axle of radius 5 cm. What effort on the wheel lifts a 150 N bucket on the axle, in newtons? (ideal)
4. 4.True or false: a civil engineer designs a metro tunnel. (a) False (b) True
5. 5.🧑‍🔧 Which kind of engineer makes medicines in bulk? (a) chemical (b) civil (c) aerospace (d) computer
6. 6.What does the team leader do? (a) runs the tests (b) keeps the team on track (c) cuts and joins parts (d) keeps the design notes
7. 7.True or false: to brainstorm many ideas is the Imagine step. (a) True (b) False
8. 8.🧑‍🔧 Which kind of engineer plans a dam? (a) chemical (b) computer (c) civil (d) biomedical
9. 9.⚖️ What is the pivot point of a lever called? (a) the load (b) the fulcrum (c) the effort (d) the axle
10. 10.What does the recorder do? (a) keeps the design notes (b) puts the model together (c) cuts and joins parts (d) collects the supplies
11. 11.🦺 Who should use hot glue guns and power tools in a kids’ project? (a) the youngest child (b) any child alone (c) a stranger (d) an adult
12. 12.⚖️ Along a straight bar, measured from the left end, the effort is at 20 cm, the fulcrum at 0 cm and the load at 10 cm. Which class of lever is it? (a) class 1 (b) class 3 (c) class 2
13. 13.📋 Your team’s budget is ₹47. You must buy one roll of tape for ₹20. Straws cost ₹4 each. What is the greatest number of straws you can buy?
14. 14.True or false: a movable pulley only changes direction. (a) True (b) False
15. 15.True or false: petrol is a renewable energy source. (a) True (b) False
16. 16.🌉 A beam bridge 120 m long rests on the two river banks and on piers in between, making equal spans of 40 m. How many piers are there?
17. 17.True or false: a computer engineer builds a website. (a) False (b) True
18. 18.📐 On a plan, 1 cm stands for 20 m. A real bridge is 80 m long. How long is it on the plan, in centimetres?
19. 19.🤝 In a design team, who runs the tests? (a) recorder (b) tester (c) materials manager (d) team leader
20. 20.⚙️ Which simple machine is a water tap handle? (a) inclined plane (b) screw (c) lever (d) wheel and axle
21. 21.🔺 One side of a straw bridge is a row of 12 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 stage stands on 7 identical legs and each leg is squeezed with 150 N. What is the total load on the stage, in newtons?
23. 23.🏋️ Pushing a crate 4 m took 440 J of work. What force was used, in newtons?
24. 24.🧪 In a fair test, how many things do you change at a time? (a) one (b) none (c) all of them (d) two
25. 25.🪝 More rope sections holding a load means … (a) no change (b) more effort needed (c) the load floats (d) less effort needed
26. 26.🔍 Which is the odd one out? (a) use a cracked tool (b) run while holding tools (c) leave tools on the floor (d) tie back long hair
27. 27.🪝 A load of 540 N hangs from a pulley system in which 2 rope sections hold up the load. What effort is needed, in newtons? (ideal pulleys)
28. 28.🔺 Why can an arch carry heavy loads? (a) it is very light (b) it is hollow (c) it works in compression (d) it bends easily
29. 29.🛠️ What does an engineer mainly do? (a) grows crops (b) designs useful solutions (c) sells tickets (d) only paints pictures
30. 30.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: sandpaper 6 N, ice 3 N, a glass sheet 4 N, a wooden plank 5 N. Which surface gave the least friction? (a) ice (b) a glass sheet (c) sandpaper (d) a wooden plank
31. 31.True or false: a movable pulley needs effort = load. (a) True (b) False
32. 32.🧱 Which property matters most for a switch contact? (a) waterproof (b) flexible (c) electrical conductor (d) heat insulator
33. 33.🔺 Which strong shape does a round palace roof use? (a) triangle (b) beam (c) arch (d) dome
34. 34.🏚️ Does fitting rubber base pads make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
35. 35.📋 Your team’s budget is ₹80. You must buy one roll of tape for ₹5. Straws cost ₹4 each. What is the greatest number of straws you can buy?
36. 36.🏋️ A machine lifts a load of 90 N when you push with 30 N. What is its mechanical advantage (MA)?
37. 37.📐 On a plan, 1 cm stands for 2 m. A real bridge is 20 m long. How long is it on the plan, in centimetres?
38. 38.🔍 Which is the odd one out? (a) guess, do not measure (b) record every result (c) test it only once (d) hide a failed test
39. 39.🤝 Is it good or poor teamwork to share the work fairly? (a) poor teamwork (b) good teamwork
40. 40.🔺 A flat frame has 7 straight sides joined by loose pins at the corners. What is the least number of corner-to-corner braces needed to make it rigid?

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