Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 690 · 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.🧪 What is a prototype? (a) a broken part (b) the final product (c) an early test model (d) a sales poster
2. 2.🔺 Which strong shape does a curved stone doorway use? (a) beam (b) arch (c) triangle (d) dome
3. 3.⚙️ A screw is really … (a) a ramp wrapped round (b) a tiny pulley (c) a kind of wheel (d) a bent lever
4. 4.🪝 A well winch has a handle (wheel) of radius 25 cm turning an axle of radius 5 cm. What is its mechanical advantage (MA)?
5. 5.⚙️ Which simple machine is a steering wheel? (a) inclined plane (b) wheel and axle (c) screw (d) lever
6. 6.🪝 A bucket weighing 220 N is lifted with a single fixed pulley at the top of a well. What effort is needed, in newtons? (ideal pulley, no friction)
7. 7.🏚️ Why are flexible joints good in an earthquake? (a) they bend, not break (b) they stop shaking (c) they are cheap (d) they look nice
8. 8.🌉 Which bridge type: “cables tied down at ends”? (a) arch bridge (b) suspension bridge (c) beam bridge
9. 9.🧱 Is copper an electrical conductor or an insulator? (a) a conductor (b) an insulator
10. 10.🏚️ Does stacking loose bricks make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
11. 11.True or false: a fixed pulley only changes direction. (a) True (b) False
12. 12.🛠️ A scientist asks “why does it happen?”. An engineer mostly asks … (a) why is the sky blue? (b) what is for lunch? (c) who won the match? (d) how can we build it?
13. 13.📐 A model car is drawn so that 1 cm stands for 40 cm. The car is 14 cm long in the drawing. How long is the real car, in centimetres?
14. 14.🧑‍🔧 Which kind of engineer builds a website? (a) computer (b) chemical (c) civil (d) aerospace
15. 15.⚖️ A lever bar balances. The load is 600 N at 50 cm from the fulcrum. The effort is 300 N at ? cm from the fulcrum on the other side. What is the missing distance in centimetres?
16. 16.⚖️ On a seesaw, a heavier child should sit … (a) on the pivot (b) farther from the pivot (c) closer to the pivot (d) anywhere
17. 17.True or false: a chemical engineer writes app software. (a) False (b) True
18. 18.🦺 What protects your eyes when sawing or drilling? (a) safety goggles (b) nothing (c) sunglasses (d) a cap
19. 19.🦺 Who should use hot glue guns and power tools in a kids’ project? (a) an adult (b) any child alone (c) the youngest child (d) a stranger
20. 20.True or false: a fishing rod is a class 3 lever (effort in the middle). (a) True (b) False
21. 21.What does the tester do? (a) writes down results (b) checks the goals are met (c) shares out the jobs (d) puts the model together
22. 22.⚖️ A seesaw balances. Arjun (360 N) sits ? m from the pivot on one side; Meena (120 N) sits 3 m from the pivot on the other side. What is the missing distance in metres?
23. 23.True or false: to blame others for faults is good teamwork. (a) True (b) False
24. 24.True or false: raising heavy tanks high makes a building less safe in earthquakes. (a) False (b) True
25. 25.Which of these is found in nature? (a) a bridge (b) a waterfall (c) a bicycle (d) a mobile phone
26. 26.🧑‍🔧 Which kind of engineer designs aeroplane wings? (a) electrical (b) aerospace (c) civil (d) biomedical
27. 27.💪 Which force is at work: a thrown ball comes down? (a) muscular force (b) gravity (c) magnetic force (d) friction
28. 28.⚖️ A seesaw balances. Arjun (360 N) sits 1 m from the pivot on one side; Meena (? N) sits 2 m from the pivot on the other side. What is the missing weight in newtons?
29. 29.🔍 Which is the odd one out? (a) clamp wood before sawing (b) run while holding tools (c) tie back long hair (d) put tools back after use
30. 30.🌉 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?
31. 31.📋 Your team’s budget is ₹55. You must buy one roll of tape for ₹15. Straws cost ₹2 each. What is the greatest number of straws you can buy?
32. 32.💪 Which force pulls everything towards the Earth? (a) gravity (b) wind (c) friction (d) magnetism
33. 33.♻️ Reduce, reuse or recycle: use a jar as a pen stand? (a) reduce (b) recycle (c) reuse
34. 34.🔺 A frame shaped like a pentagon is made of straws joined by loose pins, with 1 corner-to-corner brace. Is it rigid or wobbly? (a) wobbly (b) rigid
35. 35.🧪 A paper bridge was tested three times. It held 310 g, 140 g and 270 g. What is the mean (average) load it held, in grams?
36. 36.🔢 To follow the engineering design process, which comes first: “Plan” or “Imagine”? (a) Imagine (b) Plan
37. 37.🏋️ A force of 490 N did 1960 J of work. How many metres did the object move?
38. 38.🌉 Which bridge type: “deck hangs from cables”? (a) beam bridge (b) suspension bridge (c) arch bridge
39. 39.⚖️ A seesaw balances. Ravi (? N) sits 1 m from the pivot on one side; Kabir (180 N) sits 1 m from the pivot on the other side. What is the missing weight in newtons?
40. 40.⚖️ In a class 3 lever, what is in the middle? (a) the fulcrum (b) the effort (c) the load (d) the pulley

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