Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 683 · 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.🧪 A paper bridge was tested three times. It held 270 g, 160 g and 170 g. What is the mean (average) load it held, in grams?
2. 2.⚖️ Along a straight bar, measured from the left end, the effort is at 30 cm, the fulcrum at 40 cm and the load at 50 cm. Which class of lever is it? (a) class 1 (b) class 2 (c) class 3
3. 3.True or false: a fixed pulley needs effort = load. (a) True (b) False
4. 4.Which of these makes a building safer in earthquakes? (a) using a heavy roof (b) building tall and narrow (c) stacking loose bricks (d) having a wide base
5. 5.True or false: a bridge helps people talk to someone far away. (a) True (b) False
6. 6.True or false: to check a shelf is level, use a tape measure. (a) False (b) True
7. 7.🔍 Which is the odd one out? (a) skating on ice (b) sand on a slippery path (c) a smooth steel slide (d) oil on a squeaky hinge
8. 8.⚙️ How many simple machines are there in the usual list? (a) 10 (b) 6 (c) 12 (d) 3
9. 9.🔍 Which is the odd one out? (a) brass (b) copper (c) graphite (d) dry wood
10. 10.🔄 In which step do engineers draw a labelled diagram? (a) Improve (b) Ask (c) Test (d) Plan
11. 11.♻️ Is ocean wave energy a renewable or a non-renewable energy source? (a) non-renewable (b) renewable
12. 12.🔺 Why can an arch carry heavy loads? (a) it is very light (b) it is hollow (c) it bends easily (d) it works in compression
13. 13.📋 A design meets every criterion but costs more than the budget. Is it acceptable? (a) yes, always (b) yes, it works (c) no, it breaks a limit (d) only if it is red
14. 14.🛞 Friction acts … (a) against the motion (b) only on ice (c) with the motion (d) only upwards
15. 15.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 200 g and design C held 250 g. Which design was the strongest? (a) design A (b) design B (c) design C
16. 16.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a wooden plank 5 N, a carpet 6 N, sandpaper 9 N, ice 3 N. How many newtons more were needed on sandpaper than on ice?
17. 17.📐 A beam is 760 cm long. How long is it in metres? =
18. 18.🌉 Which bridge type: “the longest spans of all”? (a) beam bridge (b) arch bridge (c) suspension bridge
19. 19.Which of these is in tension (pulled)? (a) a tow rope on a car (b) a pillar under a roof (c) a stone in an arch (d) a squeezed spring
20. 20.Which of these happens in the Test step? (a) check it against goals (b) list the materials (c) find the limits (d) ask who will use it
21. 21.True or false: a civil engineer builds hospital scanners. (a) True (b) False
22. 22.♻️ Is coal a renewable or a non-renewable energy source? (a) non-renewable (b) renewable
23. 23.🧱 Which property matters most for a tea flask lining? (a) waterproof (b) heat insulator (c) electrical conductor (d) flexible
24. 24.🌉 A beam bridge 300 m long rests on the two river banks and on piers in between, making equal spans of 25 m. How many piers are there?
25. 25.⚙️ Which simple machine is a knife edge? (a) inclined plane (b) lever (c) wedge (d) wheel and axle
26. 26.⚙️ A wedge is … (a) a bar on a pivot (b) a rope on a wheel (c) two ramps back to back (d) a wheel on a rod
27. 27.⚙️ Most simple machines make work easier by letting us … (a) use a smaller force (b) stop all friction (c) switch off gravity (d) make new energy
28. 28.⚖️ Going along a lever from one end to the other, the order is: effort, load, fulcrum. Which class of lever is it? (a) class 1 (b) class 3 (c) class 2
29. 29.🔍 Which is the odd one out? (a) stacking loose bricks (b) making brittle joints (c) fitting rubber base pads (d) building tall and narrow
30. 30.Which of these is reduce (use less)? (a) reuse gift paper (b) turn plastic into tiles (c) switch off unused lights (d) use a jar as a pen stand
31. 31.📋 Constraint: the tower must be no taller than 70 cm. The team’s tower is 66 cm tall. Is it within the constraint? (a) Yes (b) No
32. 32.Which job does an electrical engineer do? (a) designs factory machines (b) refines crude oil (c) writes app software (d) designs power lines
33. 33.🔍 Which is the odd one out? (a) spend at most ₹100 (b) use only paper and tape (c) be under 30 cm tall (d) lift a cup of water
34. 34.True or false: a cooking pot handle needs a heat insulator. (a) False (b) True
35. 35.💪 Is pushing a swing a push or a pull? (a) a push (b) a pull
36. 36.🪝 What does a single fixed pulley change? (a) the direction of pull (b) gravity (c) the colour of rope (d) the size of the load
37. 37.True or false: to use a cracked tool is safe. (a) False (b) True
38. 38.Which of these needs an electrical conductor? (a) a spectacle lens (b) a raincoat (c) the core of a wire (d) a car seat belt
39. 39.⚖️ Which class of lever is a crowbar? (a) class 3 (b) class 2 (c) class 1
40. 40.🧱 Which property matters most for a window pane? (a) flexible (b) transparent (c) heat insulator (d) electrical conductor

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