Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 574 · 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: to cut a wooden plank, use a saw. (a) True (b) False
2. 2.💪 Is plucking a mango a push or a pull? (a) a pull (b) a push
3. 3.🧱 Is iron an electrical conductor or an insulator? (a) an insulator (b) a conductor
4. 4.True or false: a civil engineer plans a dam. (a) True (b) False
5. 5.🔍 Which is the odd one out? (a) hold up 500 g (b) lift a cup of water (c) spend at most ₹100 (d) roll at least 2 metres
6. 6.🛞 Rubbing your hands fast makes them … (a) magnetic (b) cold (c) warm (d) wet
7. 7.Which of these uses an arch? (a) a planetarium roof (b) an electric pylon (c) an old stone bridge (d) a crane arm
8. 8.📐 On a plan, 1 cm stands for 10 m. A wall is 17 cm long on the plan. How long is the real wall, in metres?
9. 9.🏋️ Pushing a crate 9 m took 90 J of work. What force was used, in newtons?
10. 10.💪 Which force is at work: rubbing hands warms them? (a) friction (b) muscular force (c) magnetic force (d) gravity
11. 11.🔍 Which is the odd one out? (a) skating on ice (b) a tyre with deep treads (c) oil on a squeaky hinge (d) a wheel on ball bearings
12. 12.🏋️ Mechanical advantage (MA) = … (a) load × effort (b) load + effort (c) load ÷ effort (d) effort ÷ load
13. 13.Which of these needs an electrical conductor? (a) a roof sheet (b) a plug pin (c) a car windscreen (d) a yoga mat
14. 14.⚖️ A seesaw balances. Ravi (600 N) sits 3 m from the pivot on one side; Kabir (? N) sits 3 m from the pivot on the other side. What is the missing weight in newtons?
15. 15.⚙️ Which simple machine is a wood screw? (a) inclined plane (b) pulley (c) screw (d) wheel and axle
16. 16.Which of these is a wedge? (a) the tip of a nail (b) a well-bucket rope wheel (c) a bottle cap (d) a claw hammer on a nail
17. 17.🔄 Which design-process step is it to think of wild ideas? (a) Ask (b) Improve (c) Imagine (d) Create
18. 18.Which of these is made by engineers? (a) a banyan tree (b) a volcano (c) a bicycle (d) a cloud
19. 19.📋 For a model bridge challenge, is “be under 30 cm tall” a constraint or a criterion? (a) a criterion (b) a constraint
20. 20.True or false: a biomedical engineer designs knee implants. (a) False (b) True
21. 21.True or false: pushing a swing is a push. (a) False (b) True
22. 22.⚙️ How many simple machines are there in the usual list? (a) 3 (b) 6 (c) 12 (d) 10
23. 23.🛞 How can we reduce friction in a machine? (a) add sand (b) press parts harder (c) oil the moving parts (d) make parts rough
24. 24.📋 For a model bridge challenge, is “use only paper and tape” a constraint or a criterion? (a) a constraint (b) a criterion
25. 25.🌉 Which bridge type: “a flat deck on piers”? (a) beam bridge (b) arch bridge (c) suspension bridge
26. 26.🔍 Which is the odd one out? (a) touch a hot glue tip (b) tie back long hair (c) cut away from your body (d) carry scissors closed
27. 27.Which of these makes a building less safe in earthquakes? (a) adding cross bracing (b) stacking loose bricks (c) using flexible joints (d) fitting rubber base pads
28. 28.🤝 In a design team, who puts the model together? (a) recorder (b) materials manager (c) team leader (d) builder
29. 29.Which of these makes a building safer in earthquakes? (a) leaving out steel bars (b) raising heavy tanks high (c) using a heavy roof (d) having a wide base
30. 30.🏋️ A force of 420 N did 840 J of work. How many metres did the object move?
31. 31.📐 On a plan, 1 cm stands for 20 m. A wall is 16 cm long on the plan. How long is the real wall, in metres?
32. 32.Which of these is reduce (use less)? (a) melt cans into new cans (b) reuse gift paper (c) plant in old tyres (d) buy less packaging
33. 33.True or false: a slab over a canal uses a beam. (a) True (b) False
34. 34.⚖️ In a class 3 lever, what is in the middle? (a) the fulcrum (b) the load (c) the effort (d) the pulley
35. 35.🔢 To follow the engineering design process, which comes first: “Improve” or “Create”? (a) Create (b) Improve
36. 36.🛠️ People need to keep food fresh longer. Which invention helps? (a) a microscope (b) a train (c) a fridge (d) a bridge
37. 37.🔄 Is the engineering design process done only once? (a) only for big jobs (b) yes, only once (c) no, it repeats (d) only on Sundays
38. 38.🛞 Is friction helpful or a problem here: a door hinge squeaking? (a) helpful (b) a problem
39. 39.True or false: to record every result is good testing. (a) True (b) False
40. 40.🏚️ Three solid model towers are made of the same material. Tower A is 40 cm tall on a 20 cm wide base, tower B is 90 cm tall on a 30 cm base and tower C is 150 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower C (b) tower A (c) tower B

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