Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 969 · 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.⚖️ A lever bar balances. The load is 300 N at ? cm from the fulcrum. The effort is 150 N at 60 cm from the fulcrum on the other side. What is the missing distance in centimetres?
2. 2.📐 How many centimetres are in 1 metre? (a) 100 (b) 1000 (c) 10 (d) 60
3. 3.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to avoid testing (c) to decorate a room (d) to sell them at once
4. 4.🛞 More or less friction: sand on a slippery path? (a) more friction (b) less friction
5. 5.True or false: to change only one thing is good testing. (a) True (b) False
6. 6.🧱 Is steel an electrical conductor or an insulator? (a) a conductor (b) an insulator
7. 7.🔺 Which strong shape does a curved stone doorway use? (a) triangle (b) dome (c) beam (d) arch
8. 8.⚖️ Which class of lever is a pair of pliers? (a) class 2 (b) class 1 (c) class 3
9. 9.True or false: an electrical engineer designs electric motors. (a) False (b) True
10. 10.🔍 Which is the odd one out? (a) a stretched rubber band (b) a tow rope on a car (c) a tent guy rope (d) a tall bridge tower
11. 11.🧑‍🔧 Which branch of engineering works on aeroplanes and rockets? (a) aerospace (b) chemical (c) civil (d) computer
12. 12.🏋️ A smooth ramp is 12 m long and rises 3 m. What effort pushes a 200 N box up it, in newtons? (ideal ramp, no friction)
13. 13.Which of these makes a building less safe in earthquakes? (a) keeping a simple shape (b) stacking loose bricks (c) adding steel to concrete (d) using a light roof
14. 14.Which job does a chemical engineer do? (a) designs aeroplane wings (b) designs a gearbox (c) designs a paint factory (d) designs school networks
15. 15.True or false: a pair of pliers is a class 3 lever (effort in the middle). (a) True (b) False
16. 16.📋 For a model bridge challenge, is “use only paper and tape” a constraint or a criterion? (a) a constraint (b) a criterion
17. 17.📋 Your team’s budget is ₹28. You must buy one roll of tape for ₹10. Straws cost ₹1 each. What is the greatest number of straws you can buy?
18. 18.⚖️ A seesaw balances. Kabir (640 N) sits 1 m from the pivot on one side; Meena (? N) sits 4 m from the pivot on the other side. What is the missing weight in newtons?
19. 19.Which job does a biomedical engineer do? (a) builds hospital scanners (b) designs school networks (c) designs factory machines (d) designs a paint factory
20. 20.🔺 A beam bends under a load. Its top side is … (a) not affected (b) stretched (tension) (c) squeezed (compression) (d) floating
21. 21.🔢 To follow the engineering design process, which comes first: “Test” or “Improve”? (a) Improve (b) Test
22. 22.📐 On a plan, 1 cm stands for 10 m. A wall is 2 cm long on the plan. How long is the real wall, in metres?
23. 23.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a carpet 5 N, ice 1 N, a glass sheet 2 N, a wooden plank 4 N. Which surface gave the least friction? (a) a glass sheet (b) a wooden plank (c) a carpet (d) ice
24. 24.🔍 Which is the odd one out? (a) a squeezed spring (b) a tall bridge tower (c) a hanging lamp chain (d) a bridge pier
25. 25.🛞 More or less friction: a tyre with deep treads? (a) less friction (b) more friction
26. 26.⚙️ Which simple machine is a round doorknob? (a) lever (b) wheel and axle (c) pulley (d) screw
27. 27.🔄 Is the engineering design process done only once? (a) only on Sundays (b) only for big jobs (c) yes, only once (d) no, it repeats
28. 28.⚖️ A seesaw balances. Ravi (800 N) sits 1 m from the pivot on one side; Arjun (? N) sits 4 m from the pivot on the other side. What is the missing weight in newtons?
29. 29.🔢 To follow the engineering design process, what comes right after “Ask”? (a) Improve (b) Test (c) Imagine (d) Plan
30. 30.⚖️ What is the pivot point of a lever called? (a) the effort (b) the fulcrum (c) the axle (d) the load
31. 31.🔢 To follow the engineering design process, which is the LAST step? (a) Imagine (b) Create (c) Improve (d) Test
32. 32.True or false: a tug of war rope is in compression (pushed). (a) False (b) True
33. 33.📐 A model car is drawn so that 1 cm stands for 20 cm. The car is 5 cm long in the drawing. How long is the real car, in centimetres?
34. 34.True or false: to draw a labelled diagram is the Create step. (a) True (b) False
35. 35.🪢 Tension or compression: a stretched rubber band? (a) compression (b) tension
36. 36.🔍 Which is the odd one out? (a) aluminium (b) copper (c) dry wood (d) graphite
37. 37.True or false: a pair of tweezers is a class 3 lever (effort in the middle). (a) True (b) False
38. 38.🪝 A pulley system lifts a 120 N load with an effort of 40 N. What is its mechanical advantage (MA)?
39. 39.True or false: a bottle opener is a class 1 lever (fulcrum in the middle). (a) False (b) True
40. 40.True or false: “the longest spans of all” is a suspension bridge. (a) False (b) True

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