Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 770 · 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 50 cm, the fulcrum at 10 cm and the load at 20 cm. Which class of lever is it? (a) class 1 (b) class 3 (c) class 2
2. 2.Which of these is found in nature? (a) a lift (b) a mobile phone (c) a railway track (d) a seashell
3. 3.⚖️ A lever bar balances. The load is ? N at 10 cm from the fulcrum. The effort is 20 N at 40 cm from the fulcrum on the other side. What is the missing force in newtons?
4. 4.🔍 Which is the odd one out? (a) a swing chain (b) a pillar under a roof (c) a tow rope on a car (d) a crane lifting cable
5. 5.🛠️ Is a rainbow made by engineers or found in nature? (a) made by engineers (b) found in nature
6. 6.♻️ A project report has 62 pages. How many sheets of paper are needed if it is printed on both sides of each sheet?
7. 7.📐 On a plan, 1 cm stands for 2 m. A real bridge is 32 m long. How long is it on the plan, in centimetres?
8. 8.🔄 What is the FIRST step of the engineering design process? (a) Test (b) Create (c) Ask (d) Improve
9. 9.🌉 Which bridge type: “a rope bridge in hills”? (a) beam bridge (b) suspension bridge (c) arch bridge
10. 10.🛠️ People need to cross a wide river. Which invention helps? (a) a tunnel (b) a bridge (c) a lift (d) a water filter
11. 11.True or false: a bottle opener is a class 1 lever (fulcrum in the middle). (a) True (b) False
12. 12.🏋️ A force of 390 N pushes a cart 9 m along the floor. How much work is done, in joules?
13. 13.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
14. 14.💪 Which force is at work: rubbing hands warms them? (a) magnetic force (b) friction (c) muscular force (d) gravity
15. 15.🪝 A wheel and axle is a big wheel fixed to … (a) a flat ramp (b) a sharp wedge (c) a loose rope (d) a smaller rod (axle)
16. 16.🔧 Which tool would you use to make a hole in wood? (a) a tape measure (b) a hammer (c) a saw (d) a hand drill
17. 17.🪢 A concrete slab weighing 23200 N rests evenly on 8 identical pillars. What compression force does each pillar carry, in newtons?
18. 18.⚖️ Along a straight bar, measured from the left end, the effort is at 10 cm, the fulcrum at 60 cm and the load at 30 cm. Which class of lever is it? (a) class 2 (b) class 3 (c) class 1
19. 19.🌉 In a suspension bridge, the main cables are in … (a) friction (b) no force (c) tension (d) compression
20. 20.🦺 Who should use hot glue guns and power tools in a kids’ project? (a) any child alone (b) an adult (c) a stranger (d) the youngest child
21. 21.⚖️ Along a straight bar, measured from the left end, the effort is at 20 cm, the fulcrum at 10 cm and the load at 50 cm. Which class of lever is it? (a) class 1 (b) class 3 (c) class 2
22. 22.True or false: a chemical engineer designs a paint factory. (a) True (b) False
23. 23.🤝 In a design team, who checks the goals are met? (a) recorder (b) materials manager (c) team leader (d) tester
24. 24.⚖️ A seesaw balances. Ravi (170 N) sits 3 m from the pivot on one side; Asha (510 N) sits ? m from the pivot on the other side. What is the missing distance in metres?
25. 25.🏚️ Three solid model towers are made of the same material. Tower A is 80 cm tall on a 40 cm wide base, tower B is 240 cm tall on a 40 cm base and tower C is 40 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower C (b) tower A (c) tower B
26. 26.🪝 A pulley system lifts a 380 N load with an effort of 190 N. What is its mechanical advantage (MA)?
27. 27.🌉 A beam bridge 180 m long rests on the two river banks and on piers in between, making equal spans of 45 m. How many piers are there?
28. 28.Which of these needs a heat insulator? (a) a water tank (b) a skipping rope (c) a magnifier lens (d) a cooking pot handle
29. 29.What does the builder do? (a) checks the goals are met (b) puts the model together (c) keeps the team on track (d) tracks what is used up
30. 30.🔍 Which is the odd one out? (a) rubber (b) glass (c) aluminium (d) dry wood
31. 31.🪢 Tension or compression: a bridge pier? (a) compression (b) tension
32. 32.📐 A model car is drawn so that 1 cm stands for 20 cm. The car is 3 cm long in the drawing. How long is the real car, in centimetres?
33. 33.🏋️ A smooth ramp is 3 m long and rises 1 m. What effort pushes a 1200 N box up it, in newtons? (ideal ramp, no friction)
34. 34.🔢 To follow the engineering design process, what comes right after “Plan”? (a) Ask (b) Create (c) Test (d) Imagine
35. 35.🏋️ A force of 210 N pushes a cart 5 m along the floor. How much work is done, in joules?
36. 36.🤝 A teammate’s idea seems odd. What should you do first? (a) walk away (b) laugh at it (c) listen and ask why (d) ignore it
37. 37.💪 A box weighs 570 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
38. 38.🏋️ Work is done when a force moves something … (a) without moving it (b) through a distance (c) very slowly (d) only upwards
39. 39.🔍 Which is the odd one out? (a) leave tools on the floor (b) run while holding tools (c) cut away from your body (d) touch a hot glue tip
40. 40.🪝 Fixed or movable pulley: which one halves the effort? (a) a fixed pulley (b) a movable pulley

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