Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 389 · 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 of these makes a building less safe in earthquakes? (a) keeping a simple shape (b) using flexible joints (c) using a heavy roof (d) using a light roof
2. 2.🔍 Which is the odd one out? (a) fitting rubber base pads (b) using flexible joints (c) having a wide base (d) making brittle joints
3. 3.📋 For a model bridge challenge, is “use only paper and tape” a constraint or a criterion? (a) a constraint (b) a criterion
4. 4.Which job is a saw for? (a) check a shelf is level (b) cut a wooden plank (c) measure a long length (d) drive in a nail
5. 5.Which of these is made by engineers? (a) a rainbow (b) a water filter (c) a coral reef (d) a river
6. 6.🔺 A beam bends under a load. Its top side is … (a) floating (b) not affected (c) squeezed (compression) (d) stretched (tension)
7. 7.True or false: a skipping rope needs a transparent material. (a) False (b) True
8. 8.True or false: powder on a carrom board gives less friction. (a) True (b) False
9. 9.⚖️ A lever bar balances. The load is 80 N at 50 cm from the fulcrum. The effort is 50 N at ? cm from the fulcrum on the other side. What is the missing distance in centimetres?
10. 10.Which of these is in compression (pushed)? (a) a tent guy rope (b) a temple column (c) a tow rope on a car (d) a swing chain
11. 11.🪢 Tension is a force that … (a) pulls or stretches (b) pushes or squeezes (c) heats things (d) turns things
12. 12.⚖️ A lever balances when … (a) the bar is short (b) the fulcrum moves (c) turning effects match (d) both weights are equal
13. 13.⚖️ Going along a lever from one end to the other, the order is: effort, load, fulcrum. Which class of lever is it? (a) class 3 (b) class 2 (c) class 1
14. 14.⚖️ A seesaw balances. Asha (280 N) sits 4 m from the pivot on one side; Arjun (? N) sits 2 m from the pivot on the other side. What is the missing weight in newtons?
15. 15.True or false: to make a hole in wood, use a screwdriver. (a) True (b) False
16. 16.Which of these makes a building less safe in earthquakes? (a) adding steel to concrete (b) using flexible joints (c) having a wide base (d) leaving out steel bars
17. 17.🛠️ A scientist asks “why does it happen?”. An engineer mostly asks … (a) why is the sky blue? (b) what is for lunch? (c) who won the match? (d) how can we build it?
18. 18.Which of these happens in the Plan step? (a) think of wild ideas (b) try it out (c) pick the build order (d) measure its performance
19. 19.📐 A model car is drawn so that 1 cm stands for 40 cm. The car is 4 cm long in the drawing. How long is the real car, in centimetres?
20. 20.True or false: a mechanical engineer designs car engines. (a) False (b) True
21. 21.True or false: a spectacle lens needs a transparent material. (a) False (b) True
22. 22.True or false: to measure its performance is the Ask step. (a) True (b) False
23. 23.🪢 A sign weighing 420 N hangs from 6 identical vertical ropes that share the load equally. What is the tension in each rope, in newtons?
24. 24.⚙️ Most simple machines make work easier by letting us … (a) switch off gravity (b) make new energy (c) stop all friction (d) use a smaller force
25. 25.💪 Which force pulls everything towards the Earth? (a) gravity (b) magnetism (c) wind (d) friction
26. 26.Which of these is a beam bridge? (a) a rope bridge in hills (b) cables tied down at ends (c) a flat deck on piers (d) the longest spans of all
27. 27.🔍 Which is the odd one out? (a) lift a cup of water (b) use at most 20 straws (c) carry 10 coins (d) roll at least 2 metres
28. 28.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) one (c) two (d) none
29. 29.True or false: a volcano is found in nature. (a) False (b) True
30. 30.True or false: a microscope helps people carry many people far. (a) True (b) False
31. 31.📐 A model car is drawn so that 1 cm stands for 10 cm. The car is 15 cm long in the drawing. How long is the real car, in centimetres?
32. 32.💪 Which force is at work: a magnet picks up pins? (a) gravity (b) friction (c) muscular force (d) magnetic force
33. 33.🤝 A teammate’s idea seems odd. What should you do first? (a) ignore it (b) listen and ask why (c) walk away (d) laugh at it
34. 34.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) measure the same way (d) skip writing results
35. 35.⚖️ A seesaw balances. Arjun (? N) sits 1 m from the pivot on one side; Ravi (170 N) sits 2 m from the pivot on the other side. What is the missing weight in newtons?
36. 36.⚖️ Going along a lever from one end to the other, the order is: effort, fulcrum, load. Which class of lever is it? (a) class 3 (b) class 1 (c) class 2
37. 37.🔧 Which tool would you use to smooth a rough edge? (a) a hammer (b) a tape measure (c) a spanner (d) sandpaper
38. 38.🏋️ An 11 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
39. 39.🏋️ A longer ramp to the same height needs … (a) less effort (b) more effort (c) no effort (d) the same effort
40. 40.🪝 A pulley system lifts a 120 N load with an effort of 60 N. What is its mechanical advantage (MA)?

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