Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 745 · 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 movable pulley needs effort = load. (a) True (b) False
2. 2.🔺 One side of a straw bridge is a row of 15 triangles standing point-up and point-down in turn, each sharing a side with the next. How many straws does it use?
3. 3.📐 A beam is 330 cm long. How long is it in metres? =
4. 4.True or false: a seashell is found in nature. (a) False (b) True
5. 5.🪝 A wheel and axle is a big wheel fixed to … (a) a sharp wedge (b) a flat ramp (c) a smaller rod (axle) (d) a loose rope
6. 6.🔢 To follow the engineering design process, what comes right after “Ask”? (a) Improve (b) Imagine (c) Test (d) Plan
7. 7.🔺 A frame shaped like a hexagon is made of straws joined by loose pins, with 1 corner-to-corner brace. Is it rigid or wobbly? (a) rigid (b) wobbly
8. 8.What does the materials manager do? (a) keeps the team on track (b) writes down results (c) puts the model together (d) tracks what is used up
9. 9.⚖️ Along a straight bar, measured from the left end, the effort is at 40 cm, the fulcrum at 0 cm and the load at 70 cm. Which class of lever is it? (a) class 1 (b) class 2 (c) class 3
10. 10.🦺 What protects your eyes when sawing or drilling? (a) nothing (b) sunglasses (c) safety goggles (d) a cap
11. 11.True or false: a fixed pulley stays in one place. (a) True (b) False
12. 12.🦺 In the workshop, is it safe to play near a moving drill? (a) not safe (b) safe
13. 13.🤝 A teammate’s idea seems odd. What should you do first? (a) walk away (b) ignore it (c) listen and ask why (d) laugh at it
14. 14.⚖️ A seesaw balances. Ravi (400 N) sits ? m from the pivot on one side; Zoya (400 N) sits 4 m from the pivot on the other side. What is the missing distance in metres?
15. 15.True or false: to tie back long hair is not safe. (a) False (b) True
16. 16.🪢 A beam rests on two supports and is pressed down in the middle. Its bottom edge is … (a) twisted (b) squeezed (compression) (c) not affected (d) stretched (tension)
17. 17.True or false: a movable pulley rises with the load. (a) True (b) False
18. 18.True or false: a biomedical engineer builds hospital scanners. (a) False (b) True
19. 19.🧱 Which material is best for a raincoat? (a) paper (b) cotton wool (c) cardboard (d) plastic-coated cloth
20. 20.🔍 Which is the odd one out? (a) a well-bucket rope wheel (b) a chisel (c) an axe blade (d) a knife edge
21. 21.📋 For a model bridge challenge, is “carry 10 coins” a constraint or a criterion? (a) a constraint (b) a criterion
22. 22.💪 Is plucking a mango a push or a pull? (a) a push (b) a pull
23. 23.🔍 Which is the odd one out? (a) plastic (b) steel (c) dry wood (d) clay pottery
24. 24.⚖️ Turning effect = force × … (a) time taken (b) mass of fulcrum (c) distance from fulcrum (d) colour of bar
25. 25.Which of these is in tension (pulled)? (a) a pillar under a roof (b) a crane lifting cable (c) a tall bridge tower (d) a stone in an arch
26. 26.🔄 Which design-process step is it to follow the plan to build? (a) Ask (b) Create (c) Test (d) Improve
27. 27.🧱 Which property matters most for a switch contact? (a) waterproof (b) electrical conductor (c) flexible (d) heat insulator
28. 28.📐 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?
29. 29.🧪 A paper bridge was tested three times. It held 430 g, 330 g and 260 g. What is the mean (average) load it held, in grams?
30. 30.🛠️ A scientist asks “why does it happen?”. An engineer mostly asks … (a) why is the sky blue? (b) who won the match? (c) what is for lunch? (d) how can we build it?
31. 31.True or false: plucking a mango is a pull. (a) False (b) True
32. 32.🌉 A beam bridge is 100 m long. Piers split it into equal spans of 50 m. How many spans are there?
33. 33.🏚️ Three solid model towers are made of the same material. Tower A is 50 cm tall on a 10 cm wide base, tower B is 120 cm tall on a 40 cm base and tower C is 160 cm tall on a 40 cm base. Which is the hardest to tip over? (a) tower C (b) tower A (c) tower B
34. 34.True or false: “a log across a stream” is a suspension bridge. (a) False (b) True
35. 35.🤝 In a design team, who keeps the design notes? (a) materials manager (b) team leader (c) recorder (d) builder
36. 36.🏋️ A smooth ramp is 4 m long and rises 2 m. What effort pushes a 1600 N box up it, in newtons? (ideal ramp, no friction)
37. 37.🏋️ A force of 370 N did 1850 J of work. How many metres did the object move?
38. 38.📋 Your team’s budget is ₹33. You must buy one roll of tape for ₹5. Straws cost ₹1 each. What is the greatest number of straws you can buy?
39. 39.📋 Criteria are … (a) the tools you use (b) goals a design must meet (c) the team names (d) the limits on money
40. 40.🔍 Which is the odd one out? (a) a river (b) a volcano (c) a rainbow (d) a mobile phone

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