Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 636 · 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.⚙️ Which simple machine is a well winch handle? (a) screw (b) lever (c) pulley (d) wheel and axle
2. 2.🔍 Which is the odd one out? (a) change lots at once (b) test it only once (c) use the same load (d) use a new load each time
3. 3.🧱 Is brass an electrical conductor or an insulator? (a) an insulator (b) a conductor
4. 4.📐 On a plan, 1 cm stands for 10 m. A real bridge is 70 m long. How long is it on the plan, in centimetres?
5. 5.⚖️ Going along a lever from one end to the other, the order is: fulcrum, load, effort. Which class of lever is it? (a) class 1 (b) class 2 (c) class 3
6. 6.True or false: a temple column is in compression (pushed). (a) False (b) True
7. 7.True or false: a swing chain is in compression (pushed). (a) True (b) False
8. 8.🦺 How should you carry scissors? (a) points down, closed (b) by the blades (c) points up, open (d) while running
9. 9.True or false: chalk on a gym bar gives less friction. (a) True (b) False
10. 10.♻️ A school bench is made from 450 recycled plastic bottles. How many benches can be made from 1350 bottles?
11. 11.🔍 Which is the odd one out? (a) touch a hot glue tip (b) use a cracked tool (c) carry scissors closed (d) leave tools on the floor
12. 12.📐 On a plan, 1 cm stands for 10 m. A wall is 14 cm long on the plan. How long is the real wall, in metres?
13. 13.⚖️ A lever balances when … (a) the bar is short (b) both weights are equal (c) the fulcrum moves (d) turning effects match
14. 14.🏋️ A 12 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
15. 15.🪝 Fixed or movable pulley: which one hangs on the rope loop? (a) a movable pulley (b) a fixed pulley
16. 16.🏋️ Pushing a crate 8 m took 320 J of work. What force was used, in newtons?
17. 17.True or false: to give kind feedback is poor teamwork. (a) True (b) False
18. 18.⚖️ Which class of lever is a beam balance? (a) class 1 (b) class 3 (c) class 2
19. 19.📋 Constraint: the tower must be no taller than 60 cm. The team’s tower is 56 cm tall. Is it within the constraint? (a) Yes (b) No
20. 20.🛞 Is friction helpful or a problem here: a door hinge squeaking? (a) helpful (b) a problem
21. 21.🪝 A pulley system lifts a 560 N load with an effort of 280 N. What is its mechanical advantage (MA)?
22. 22.What does the recorder do? (a) writes down results (b) checks the goals are met (c) puts the model together (d) runs the tests
23. 23.🔍 Which is the odd one out? (a) spend at most ₹100 (b) lift a cup of water (c) keep ice for 1 hour (d) float for 1 minute
24. 24.🌉 Which bridge type: “the simplest bridge”? (a) arch bridge (b) beam bridge (c) suspension bridge
25. 25.🪝 A load of 180 N hangs from a pulley system in which 2 rope sections hold up the load. What effort is needed, in newtons? (ideal pulleys)
26. 26.True or false: an electrical engineer designs artificial limbs. (a) False (b) True
27. 27.⚙️ How many simple machines are there in the usual list? (a) 12 (b) 10 (c) 6 (d) 3
28. 28.Which job does a biomedical engineer do? (a) plans a dam (b) refines crude oil (c) designs hearing aids (d) designs a metro tunnel
29. 29.What does the builder do? (a) keeps the design notes (b) keeps the team on track (c) checks the goals are met (d) puts the model together
30. 30.🦺 What protects your eyes when sawing or drilling? (a) nothing (b) a cap (c) sunglasses (d) safety goggles
31. 31.True or false: a solar panel helps people make power from sunlight. (a) False (b) True
32. 32.True or false: hitting a cricket ball is a push. (a) True (b) False
33. 33.True or false: leaving out steel bars makes a building safer in earthquakes. (a) True (b) False
34. 34.🛞 How can we reduce friction in a machine? (a) press parts harder (b) oil the moving parts (c) make parts rough (d) add sand
35. 35.🏋️ A 1 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
36. 36.⚖️ A lever bar balances. The load is 420 N at 40 cm from the fulcrum. The effort is 240 N at ? cm from the fulcrum on the other side. What is the missing distance in centimetres?
37. 37.⚖️ A lever bar balances. The load is 90 N at 20 cm from the fulcrum. The effort is ? N at 30 cm from the fulcrum on the other side. What is the missing force in newtons?
38. 38.♻️ Reduce, reuse or recycle: plant in old tyres? (a) recycle (b) reuse (c) reduce
39. 39.True or false: a telephone helps people keep food fresh longer. (a) True (b) False
40. 40.♻️ Which energy source will never run out? (a) coal (b) petrol (c) sunlight (d) diesel

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