Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 610 · 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.⚖️ Turning effect = force × … (a) time taken (b) mass of fulcrum (c) colour of bar (d) distance from fulcrum
2. 2.True or false: “spend at most ₹100” is a criterion (a goal). (a) False (b) True
3. 3.📐 A model car is drawn so that 1 cm stands for 30 cm. The car is 2 cm long in the drawing. How long is the real car, in centimetres?
4. 4.🔺 One side of a straw bridge is a row of 14 triangles standing point-up and point-down in turn, each sharing a side with the next. How many straws does it use?
5. 5.🛞 More or less friction: sand on a slippery path? (a) more friction (b) less friction
6. 6.🛠️ People need to reach a top floor fast. Which invention helps? (a) a tunnel (b) a telephone (c) a lift (d) a bridge
7. 7.🌉 In a suspension bridge, the main cables are in … (a) tension (b) no force (c) compression (d) friction
8. 8.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: sandpaper 12 N, a glass sheet 1 N, a wooden plank 5 N, a carpet 9 N. Which surface gave the most friction? (a) sandpaper (b) a wooden plank (c) a carpet (d) a glass sheet
9. 9.🧱 Which property matters most for a car windscreen? (a) flexible (b) waterproof (c) heat insulator (d) transparent
10. 10.⚖️ A lever bar balances. The load is 140 N at 50 cm from the fulcrum. The effort is ? N at 70 cm from the fulcrum on the other side. What is the missing force in newtons?
11. 11.📋 Your team’s budget is ₹77. You must buy one roll of tape for ₹10. Straws cost ₹5 each. What is the greatest number of straws you can buy?
12. 12.🏋️ A smooth ramp is 9 m long and rises 3 m. What effort pushes a 600 N box up it, in newtons? (ideal ramp, no friction)
13. 13.🔄 Which design-process step is it to fix the weak part? (a) Test (b) Ask (c) Improve (d) Plan
14. 14.🧱 Which property matters most for a skipping rope? (a) transparent (b) electrical conductor (c) waterproof (d) flexible
15. 15.🤝 Is it good or poor teamwork to do all the work alone? (a) good teamwork (b) poor teamwork
16. 16.🪝 A bucket weighing 440 N is lifted with a single fixed pulley at the top of a well. What effort is needed, in newtons? (ideal pulley, no friction)
17. 17.💪 Is closing a drawer a push or a pull? (a) a pull (b) a push
18. 18.📐 On a plan, 1 cm stands for 10 m. A real bridge is 40 m long. How long is it on the plan, in centimetres?
19. 19.⚖️ Along a straight bar, measured from the left end, the effort is at 80 cm, the fulcrum at 40 cm and the load at 10 cm. Which class of lever is it? (a) class 1 (b) class 2 (c) class 3
20. 20.🧱 Is iron an electrical conductor or an insulator? (a) a conductor (b) an insulator
21. 21.True or false: a computer engineer lays out a highway. (a) True (b) False
22. 22.Which of these needs a flexible material? (a) a yoga mat (b) a plug pin (c) a car windscreen (d) a boat hull
23. 23.📋 For a model bridge challenge, is “use at most 20 straws” a constraint or a criterion? (a) a criterion (b) a constraint
24. 24.⚙️ Which simple machine is a screw jack? (a) screw (b) wheel and axle (c) lever (d) pulley
25. 25.🔢 To follow the engineering design process, which is the FIRST step? (a) Create (b) Ask (c) Imagine (d) Plan
26. 26.True or false: a civil engineer keeps data safe online. (a) False (b) True
27. 27.Which job is a spirit level for? (a) make a hole in wood (b) turn a screw (c) check a shelf is level (d) smooth a rough edge
28. 28.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
29. 29.🛞 More or less friction: a box pushed on carpet? (a) more friction (b) less friction
30. 30.💪 A cart is pulled to the right with 45 N and to the left with 60 N. Which way does the net force act? (a) to the right (b) to the left (c) no net force
31. 31.True or false: a wheel on ball bearings gives less friction. (a) False (b) True
32. 32.True or false: a crowbar is a wedge. (a) False (b) True
33. 33.🤝 A team plans for 30 minutes, builds for 60 minutes and then tests for 25 minutes, one after another. How many minutes is that in all?
34. 34.📐 How many millimetres are in 1 centimetre? (a) 5 (b) 1000 (c) 10 (d) 100
35. 35.🧑‍🔧 Which branch of engineering works on aeroplanes and rockets? (a) computer (b) chemical (c) civil (d) aerospace
36. 36.🔺 A frame shaped like a triangle is made of straws joined by loose pins, with 0 corner-to-corner braces. Is it rigid or wobbly? (a) wobbly (b) rigid
37. 37.🛠️ What does an engineer mainly do? (a) only paints pictures (b) sells tickets (c) designs useful solutions (d) grows crops
38. 38.Which job does a civil engineer do? (a) designs factory machines (b) lays out a highway (c) keeps data safe online (d) plans a power grid
39. 39.🪢 Tension is a force that … (a) pushes or squeezes (b) turns things (c) pulls or stretches (d) heats things
40. 40.Which of these happens in the Plan step? (a) make a prototype (b) draw a labelled diagram (c) think of wild ideas (d) make it better, retest

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