Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 616 · 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.⚖️ Along a straight bar, measured from the left end, the effort is at 90 cm, the fulcrum at 60 cm and the load at 30 cm. Which class of lever is it? (a) class 3 (b) class 1 (c) class 2
2. 2.📐 A beam is 670 cm long. How long is it in metres? =
3. 3.🪝 A well winch has a handle (wheel) of radius 7 cm turning an axle of radius 1 cm. What is its mechanical advantage (MA)?
4. 4.True or false: chalk on a gym bar gives less friction. (a) True (b) False
5. 5.🏋️ Work is done when a force moves something … (a) only upwards (b) without moving it (c) very slowly (d) through a distance
6. 6.📋 Constraint: the tower must be no taller than 100 cm. The team’s tower is 94 cm tall. Is it within the constraint? (a) No (b) Yes
7. 7.True or false: an electrical engineer designs a paint factory. (a) True (b) False
8. 8.⚖️ Along a straight bar, measured from the left end, the effort is at 60 cm, the fulcrum at 20 cm and the load at 0 cm. Which class of lever is it? (a) class 2 (b) class 3 (c) class 1
9. 9.🔍 Which is the odd one out? (a) a jar lid (b) a nutcracker (c) a claw hammer on a nail (d) a seesaw
10. 10.True or false: sunlight is a renewable energy source. (a) True (b) False
11. 11.True or false: to smooth a rough edge, use sandpaper. (a) False (b) True
12. 12.⚙️ How many simple machines are there in the usual list? (a) 3 (b) 10 (c) 6 (d) 12
13. 13.🔄 Which design-process step is it to pick the build order? (a) Create (b) Imagine (c) Ask (d) Plan
14. 14.Which of these is reduce (use less)? (a) melt glass into new jars (b) melt cans into new cans (c) buy less packaging (d) use a jar as a pen stand
15. 15.🏋️ A force of 410 N did 2050 J of work. How many metres did the object move?
16. 16.🛞 Is friction helpful or a problem here: walking without slipping? (a) a problem (b) helpful
17. 17.🏚️ Three solid model towers are made of the same material. Tower A is 180 cm tall on a 30 cm wide base, tower B is 150 cm tall on a 30 cm base and tower C is 80 cm tall on a 20 cm base. Which is the hardest to tip over? (a) tower B (b) tower A (c) tower C
18. 18.📋 Your team’s budget is ₹32. You must buy one roll of tape for ₹20. Straws cost ₹1 each. What is the greatest number of straws you can buy?
19. 19.♻️ Reduce, reuse or recycle: give old books away? (a) recycle (b) reuse (c) reduce
20. 20.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
21. 21.True or false: a civil engineer designs school networks. (a) True (b) False
22. 22.Which job is a saw for? (a) smooth a rough edge (b) measure an angle (c) cut a wooden plank (d) make a hole in wood
23. 23.🔢 To follow the engineering design process, what comes right after “Create”? (a) Improve (b) Test (c) Ask (d) Plan
24. 24.🪝 A well winch has a handle (wheel) of radius 16 cm turning an axle of radius 2 cm. What is its mechanical advantage (MA)?
25. 25.⚖️ On a seesaw, a heavier child should sit … (a) anywhere (b) closer to the pivot (c) on the pivot (d) farther from the pivot
26. 26.Which job does a computer engineer do? (a) designs hearing aids (b) designs knee implants (c) writes app software (d) plans a power grid
27. 27.🔍 Which is the odd one out? (a) touch a hot glue tip (b) clamp wood before sawing (c) leave tools on the floor (d) use a cracked tool
28. 28.🪝 A pulley system has 3 rope sections holding up the load. To lift the load by 5 m, how many metres of rope must you pull?
29. 29.🤝 A team plans for 55 minutes, builds for 15 minutes and then tests for 25 minutes, one after another. How many minutes is that in all?
30. 30.True or false: a fixed pulley halves the effort. (a) False (b) True
31. 31.🌉 In a stone arch bridge, the stones are in … (a) tension (b) no force (c) friction (d) compression
32. 32.🛠️ People need to see very tiny things. Which invention helps? (a) a telephone (b) a microscope (c) a dam (d) a water filter
33. 33.🪝 What does a single fixed pulley change? (a) the colour of rope (b) gravity (c) the direction of pull (d) the size of the load
34. 34.True or false: to redesign after testing is the Create step. (a) False (b) True
35. 35.🧱 Which material is best for the bars inside concrete? (a) plastic (b) glass (c) steel (d) rubber
36. 36.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) to get reliable results (d) it looks busy
37. 37.Which job does a chemical engineer do? (a) designs a paint factory (b) plans a dam (c) designs a flyover (d) designs bicycle gears
38. 38.⚖️ Going along a lever from one end to the other, the order is: effort, fulcrum, load. Which class of lever is it? (a) class 2 (b) class 1 (c) class 3
39. 39.True or false: a suspension cable is in tension (pulled). (a) False (b) True
40. 40.🏚️ Does leaving out steel bars make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes

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