Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 623 · 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 20 cm, the fulcrum at 10 cm and the load at 0 cm. Which class of lever is it? (a) class 2 (b) class 1 (c) class 3
2. 2.🏋️ A machine lifts a load of 120 N when you push with 30 N. What is its mechanical advantage (MA)?
3. 3.True or false: a grippy rubber sole gives less friction. (a) False (b) True
4. 4.🧱 Which material is best for a window pane? (a) steel (b) glass (c) brick (d) wood
5. 5.🤝 A teammate’s idea seems odd. What should you do first? (a) ignore it (b) listen and ask why (c) laugh at it (d) walk away
6. 6.💪 In a tug of war, one team pulls right with 60 N and the other pulls left with 15 N. What is the size of the net force, in newtons?
7. 7.True or false: adding cross bracing makes a building safer in earthquakes. (a) True (b) False
8. 8.♻️ Reduce, reuse or recycle: print on both sides? (a) reuse (b) reduce (c) recycle
9. 9.True or false: a wheelbarrow is a class 2 lever (load in the middle). (a) True (b) False
10. 10.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a carpet 13 N, ice 3 N, a glass sheet 5 N, a wooden plank 9 N. How many newtons more were needed on a carpet than on ice?
11. 11.📋 Your team’s budget is ₹16. You must buy one roll of tape for ₹5. Straws cost ₹2 each. What is the greatest number of straws you can buy?
12. 12.💪 Which can a force NOT do? (a) change its colour (b) stop it moving (c) start it moving (d) change its shape
13. 13.🪢 Tension or compression: a squeezed spring? (a) compression (b) tension
14. 14.🧪 A paper bridge was tested three times. It held 330 g, 140 g and 250 g. What is the mean (average) load it held, in grams?
15. 15.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to use more paper (d) to get reliable results
16. 16.♻️ Reduce, reuse or recycle: buy less packaging? (a) recycle (b) reuse (c) reduce
17. 17.🏋️ A 16 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
18. 18.Which job is a tape measure for? (a) measure a long length (b) measure an angle (c) drive in a nail (d) check a shelf is level
19. 19.📐 A model car is drawn so that 1 cm stands for 20 cm. The car is 7 cm long in the drawing. How long is the real car, in centimetres?
20. 20.Which of these happens in the Plan step? (a) find the limits (b) dream up possible fixes (c) draw a labelled diagram (d) ask who will use it
21. 21.🔍 Which is the odd one out? (a) a wheelchair ramp (b) a road up a hill (c) a crane hook block (d) a truck loading ramp
22. 22.🌉 A beam bridge is 110 m long. Piers split it into equal spans of 10 m. How many spans are there?
23. 23.🔍 Which is the odd one out? (a) use the same load (b) measure the same way (c) change only one thing (d) change lots at once
24. 24.True or false: to laugh at ideas is good teamwork. (a) False (b) True
25. 25.⚙️ Which simple machine is a crane hook block? (a) pulley (b) lever (c) screw (d) wedge
26. 26.🔍 Which is the odd one out? (a) measure the same way (b) test it only once (c) change lots at once (d) hide a failed test
27. 27.🧑‍🔧 Which kind of engineer lays out a highway? (a) biomedical (b) civil (c) computer (d) chemical
28. 28.🤝 In a design team, who runs the tests? (a) recorder (b) tester (c) team leader (d) builder
29. 29.True or false: a coral reef is made by engineers. (a) False (b) True
30. 30.🔺 A flat frame has 11 straight sides joined by loose pins at the corners. What is the least number of corner-to-corner braces needed to make it rigid?
31. 31.True or false: hitting a cricket ball is a pull. (a) False (b) True
32. 32.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) change only one thing (d) hide a failed test
33. 33.🧑‍🔧 Which branch of engineering designs buildings, roads and bridges? (a) civil (b) computer (c) biomedical (d) chemical
34. 34.Which of these happens in the Test step? (a) measure its performance (b) brainstorm many ideas (c) ask who will use it (d) list the materials
35. 35.🛠️ Is a water filter made by engineers or found in nature? (a) found in nature (b) made by engineers
36. 36.🤝 Is it good or poor teamwork to help a stuck teammate? (a) good teamwork (b) poor teamwork
37. 37.🪝 A well winch has a handle (wheel) of radius 6 cm turning an axle of radius 2 cm. What is its mechanical advantage (MA)?
38. 38.🔄 Is the engineering design process done only once? (a) no, it repeats (b) only on Sundays (c) only for big jobs (d) yes, only once
39. 39.🧱 Which property matters most for a raincoat? (a) transparent (b) waterproof (c) heat insulator (d) flexible
40. 40.🪝 A pulley system lifts a 660 N load with an effort of 220 N. What is its mechanical advantage (MA)?

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