Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 533 · 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: a volcano is found in nature. (a) True (b) False
2. 2.⚙️ Which simple machine is a bottle opener? (a) wedge (b) lever (c) pulley (d) inclined plane
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 140 g and design C held 190 g. Which design was the weakest? (a) design B (b) design A (c) design C
4. 4.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
5. 5.📋 Your team’s budget is ₹82. You must buy one roll of tape for ₹20. Straws cost ₹5 each. What is the greatest number of straws you can buy?
6. 6.🌉 Which bridge type: “deck hangs from cables”? (a) beam bridge (b) suspension bridge (c) arch bridge
7. 7.🧪 A paper bridge was tested three times. It held 330 g, 250 g and 380 g. What is the mean (average) load it held, in grams?
8. 8.♻️ Is petrol a renewable or a non-renewable energy source? (a) non-renewable (b) renewable
9. 9.🪢 Tension or compression: a tow rope on a car? (a) compression (b) tension
10. 10.🏋️ A force of 170 N pushes a cart 7 m along the floor. How much work is done, in joules?
11. 11.🧱 Which material is best for a raincoat? (a) plastic-coated cloth (b) paper (c) cotton wool (d) cardboard
12. 12.📋 Your team’s budget is ₹25. You must buy one roll of tape for ₹10. Straws cost ₹1 each. What is the greatest number of straws you can buy?
13. 13.True or false: using a heavy roof makes a building less safe in earthquakes. (a) False (b) True
14. 14.📋 Your team’s budget is ₹71. You must buy one roll of tape for ₹10. Straws cost ₹4 each. What is the greatest number of straws you can buy?
15. 15.⚖️ Along a straight bar, measured from the left end, the effort is at 10 cm, the fulcrum at 50 cm and the load at 90 cm. Which class of lever is it? (a) class 3 (b) class 1 (c) class 2
16. 16.⚖️ A lever bar balances. The load is 120 N at ? cm from the fulcrum. The effort is 20 N at 60 cm from the fulcrum on the other side. What is the missing distance in centimetres?
17. 17.Which of these is a pulley? (a) a flagpole rope wheel (b) a nut and bolt (c) a seesaw (d) a chisel
18. 18.🔍 Which is the odd one out? (a) a dam (b) a volcano (c) a satellite (d) a ceiling fan
19. 19.📋 For a model bridge challenge, is “carry 10 coins” a constraint or a criterion? (a) a criterion (b) a constraint
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 110 g, design B held 210 g and design C held 160 g. Which design was the weakest? (a) design B (b) design A (c) design C
21. 21.Which of these is in tension (pulled)? (a) a brick at a wall base (b) a tall bridge tower (c) a temple column (d) a crane lifting cable
22. 22.🏋️ A 6 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
23. 23.🔺 A flat frame has 4 straight sides joined by loose pins at the corners. What is the least number of corner-to-corner braces needed to make it rigid?
24. 24.🔍 Which is the odd one out? (a) clamp wood before sawing (b) cut towards your hand (c) wear safety goggles (d) let adults use hot glue
25. 25.True or false: to measure its performance is the Test step. (a) False (b) True
26. 26.🌉 A beam bridge 480 m long rests on the two river banks and on piers in between, making equal spans of 40 m. How many piers are there?
27. 27.📋 Constraint: the tower must be no taller than 90 cm. The team’s tower is 94 cm tall. Is it within the constraint? (a) No (b) Yes
28. 28.True or false: a lemon squeezer is a class 1 lever (fulcrum in the middle). (a) False (b) True
29. 29.🔍 Which is the odd one out? (a) a cloud (b) a mountain (c) a seashell (d) a bridge
30. 30.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
31. 31.True or false: to test it only once is good testing. (a) False (b) True
32. 32.True or false: a car windscreen needs a waterproof material. (a) True (b) False
33. 33.💪 Two equal forces push on a box from opposite sides. They are … (a) balanced (b) unbalanced (c) gravity (d) doubled
34. 34.📋 For a model bridge challenge, is “float for 1 minute” a constraint or a criterion? (a) a constraint (b) a criterion
35. 35.🔍 Which is the odd one out? (a) cut towards your hand (b) use a cracked tool (c) run while holding tools (d) carry scissors closed
36. 36.⚙️ A wedge is … (a) a wheel on a rod (b) a bar on a pivot (c) two ramps back to back (d) a rope on a wheel
37. 37.🛠️ People need to go through a mountain. Which invention helps? (a) a solar panel (b) a water filter (c) a tunnel (d) a bridge
38. 38.🏋️ Mechanical advantage (MA) = … (a) load × effort (b) load ÷ effort (c) effort ÷ load (d) load + effort
39. 39.⚖️ Going along a lever from one end to the other, the order is: load, fulcrum, effort. Which class of lever is it? (a) class 2 (b) class 3 (c) class 1
40. 40.🧱 Which material is best for a window pane? (a) brick (b) wood (c) steel (d) glass

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