Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 828 · 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 strong shape does a crane arm use? (a) arch (b) dome (c) triangle (d) beam
2. 2.🛠️ What does an engineer do before building anything? (a) understands the problem (b) builds at once (c) paints the model (d) buys every material
3. 3.🔺 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?
4. 4.Which of these is reuse (use again)? (a) melt cans into new cans (b) fix a dripping tap (c) switch off unused lights (d) refill a water bottle
5. 5.📐 Why do engineers use scale drawings? (a) to hide sizes (b) to save ink only (c) to make them pretty (d) big things fit on paper
6. 6.🏋️ A longer ramp to the same height needs … (a) more effort (b) the same effort (c) less effort (d) no effort
7. 7.⚖️ Which class of lever is a crowbar? (a) class 2 (b) class 3 (c) class 1
8. 8.🪝 Fixed or movable pulley: which one hangs on the rope loop? (a) a fixed pulley (b) a movable pulley
9. 9.⚖️ A seesaw balances. Arjun (120 N) sits 4 m from the pivot on one side; Zoya (480 N) sits ? m from the pivot on the other side. What is the missing distance in metres?
10. 10.📐 On a plan, 1 cm stands for 2 m. A real bridge is 22 m long. How long is it on the plan, in centimetres?
11. 11.🧱 Which property matters most for a roof sheet? (a) waterproof (b) flexible (c) transparent (d) electrical conductor
12. 12.Which need does a bridge meet? (a) store water for summer (b) reach a top floor fast (c) cross a wide river (d) make water safe to drink
13. 13.🔍 Which is the odd one out? (a) tie back long hair (b) let adults use hot glue (c) carry scissors closed (d) play near a moving drill
14. 14.🤝 A teammate’s idea seems odd. What should you do first? (a) walk away (b) ignore it (c) laugh at it (d) listen and ask why
15. 15.🛞 Why are tyres made with deep treads? (a) to look nice (b) to save rubber (c) to go slower (d) to grip the road
16. 16.🏋️ A smooth ramp is 4 m long and rises 1 m. What effort pushes a 2200 N box up it, in newtons? (ideal ramp, no friction)
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 380 g, design B held 280 g and design C held 330 g. Which design was the weakest? (a) design B (b) design C (c) design A
18. 18.True or false: to check a shelf is level, use a spirit level. (a) False (b) True
19. 19.⚖️ In a class 2 lever, what is in the middle? (a) the fulcrum (b) the axle (c) the load (d) the effort
20. 20.🔺 A frame shaped like a hexagon is made of straws joined by loose pins, with 2 corner-to-corner braces. Is it rigid or wobbly? (a) rigid (b) wobbly
21. 21.🛞 More or less friction: a grippy rubber sole? (a) more friction (b) less friction
22. 22.🪝 What does a single fixed pulley change? (a) the direction of pull (b) the size of the load (c) the colour of rope (d) gravity
23. 23.🧱 Which material is best for the core of an electric wire? (a) copper (b) wood (c) glass (d) rubber
24. 24.🏋️ In which unit is work measured? (a) metre (m) (b) watt hour (c) newton (N) (d) joule (J)
25. 25.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: sandpaper 13 N, a glass sheet 4 N, a wooden plank 5 N, a carpet 9 N. How many newtons more were needed on sandpaper than on a glass sheet?
26. 26.📐 A model car is drawn so that 1 cm stands for 40 cm. The car is 15 cm long in the drawing. How long is the real car, in centimetres?
27. 27.True or false: a temple column is in compression (pushed). (a) False (b) True
28. 28.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
29. 29.True or false: skating on ice gives less friction. (a) False (b) True
30. 30.🦺 In the workshop, is it safe to wear safety goggles? (a) safe (b) not safe
31. 31.⚖️ A seesaw balances. Zoya (360 N) sits 2 m from the pivot on one side; Arjun (240 N) sits ? m from the pivot on the other side. What is the missing distance in metres?
32. 32.⚖️ Going along a lever from one end to the other, the order is: fulcrum, load, effort. Which class of lever is it? (a) class 3 (b) class 2 (c) class 1
33. 33.📐 On a plan, 1 cm stands for 10 m. A real bridge is 30 m long. How long is it on the plan, in centimetres?
34. 34.🔍 Which is the odd one out? (a) leaving out steel bars (b) adding cross bracing (c) having a wide base (d) keeping a simple shape
35. 35.🛞 More or less friction: skating on ice? (a) more friction (b) less friction
36. 36.⚖️ A seesaw balances. Meena (320 N) sits 2 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?
37. 37.🏋️ A force of 110 N did 550 J of work. How many metres did the object move?
38. 38.True or false: a bicycle frame uses triangles. (a) False (b) True
39. 39.🔄 Which design-process step is it to ask who will use it? (a) Test (b) Ask (c) Improve (d) Imagine
40. 40.🔍 Which is the odd one out? (a) a bridge pier (b) a brick at a wall base (c) a squeezed spring (d) a tow rope on a car

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