Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 530 · 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 tent guy rope is in compression (pushed). (a) False (b) True
2. 2.💪 Which force is at work: a compass needle turns? (a) friction (b) muscular force (c) gravity (d) magnetic force
3. 3.True or false: a smooth steel slide gives less friction. (a) True (b) False
4. 4.Which of these is found in nature? (a) a mobile phone (b) a water filter (c) a bicycle (d) a mountain
5. 5.Which need does a dam meet? (a) keep food fresh longer (b) store water for summer (c) go through a mountain (d) make water safe to drink
6. 6.⚖️ A seesaw balances. Kabir (440 N) sits ? m from the pivot on one side; Ravi (440 N) sits 4 m from the pivot on the other side. What is the missing distance in metres?
7. 7.🤝 Is it good or poor teamwork to agree before changing? (a) good teamwork (b) poor teamwork
8. 8.True or false: “fit on a school desk” is a criterion (a goal). (a) True (b) False
9. 9.🏋️ A force of 500 N did 1500 J of work. How many metres did the object move?
10. 10.⚖️ Along a straight bar, measured from the left end, the effort is at 100 cm, the fulcrum at 60 cm and the load at 20 cm. Which class of lever is it? (a) class 3 (b) class 2 (c) class 1
11. 11.True or false: a movable pulley is on a flagpole top. (a) True (b) False
12. 12.🤝 In a design team, who keeps the design notes? (a) materials manager (b) tester (c) recorder (d) team leader
13. 13.🦺 In the workshop, is it safe to run while holding tools? (a) not safe (b) safe
14. 14.⚖️ Going along a lever from one end to the other, the order is: effort, load, fulcrum. Which class of lever is it? (a) class 3 (b) class 1 (c) class 2
15. 15.📋 Your team’s budget is ₹66. You must buy one roll of tape for ₹20. Straws cost ₹5 each. What is the greatest number of straws you can buy?
16. 16.🧑‍🔧 Which kind of engineer designs a flyover? (a) electrical (b) mechanical (c) civil (d) computer
17. 17.♻️ Is diesel a renewable or a non-renewable energy source? (a) non-renewable (b) renewable
18. 18.🔍 Which is the odd one out? (a) a volcano (b) a mobile phone (c) a water filter (d) a lift
19. 19.⚖️ A lever balances when … (a) the fulcrum moves (b) turning effects match (c) both weights are equal (d) the bar is short
20. 20.⚖️ Which class of lever is a pair of kitchen tongs? (a) class 2 (b) class 3 (c) class 1
21. 21.♻️ Is petrol a renewable or a non-renewable energy source? (a) non-renewable (b) renewable
22. 22.🔍 Which is the odd one out? (a) a crane lifting cable (b) a swing chain (c) a suspension cable (d) a tall bridge tower
23. 23.🔢 To follow the engineering design process, which comes first: “Ask” or “Imagine”? (a) Ask (b) Imagine
24. 24.💪 Two children push a box to the right, one with 40 N and the other with 10 N. What is the net (total) force on the box, in newtons?
25. 25.🛠️ What does an engineer do before building anything? (a) paints the model (b) understands the problem (c) buys every material (d) builds at once
26. 26.🧱 Which material is best for the bars inside concrete? (a) glass (b) steel (c) rubber (d) plastic
27. 27.♻️ A family used to throw away 8 plastic bags a week. They now carry cloth bags. How many plastic bags do they save in 2 weeks?
28. 28.⚖️ Along a straight bar, measured from the left end, the effort is at 30 cm, the fulcrum at 70 cm and the load at 90 cm. Which class of lever is it? (a) class 2 (b) class 1 (c) class 3
29. 29.🪝 More rope sections holding a load means … (a) more effort needed (b) no change (c) less effort needed (d) the load floats
30. 30.🔍 Which is the odd one out? (a) a mountain (b) a coral reef (c) a mobile phone (d) a banyan tree
31. 31.🪝 A pulley system lifts a 360 N load with an effort of 120 N. What is its mechanical advantage (MA)?
32. 32.🧑‍🔧 Which kind of engineer plans a dam? (a) civil (b) chemical (c) mechanical (d) biomedical
33. 33.⚖️ A lever bar balances. The load is 240 N at 10 cm from the fulcrum. The effort is 60 N at ? cm from the fulcrum on the other side. What is the missing distance in centimetres?
34. 34.⚖️ Which class of lever is a pair of tweezers? (a) class 2 (b) class 3 (c) class 1
35. 35.📐 On a plan, 1 cm stands for 2 m. A real bridge is 16 m long. How long is it on the plan, in centimetres?
36. 36.Which of these is made by engineers? (a) a volcano (b) a seashell (c) a bicycle (d) a mountain
37. 37.⚖️ A seesaw balances. Meena (? N) sits 2 m from the pivot on one side; Kabir (360 N) sits 3 m from the pivot on the other side. What is the missing weight in newtons?
38. 38.📐 On a plan, 1 cm stands for 5 m. A real bridge is 90 m long. How long is it on the plan, in centimetres?
39. 39.🧪 A paper bridge was tested three times. It held 320 g, 200 g and 170 g. What is the mean (average) load it held, in grams?
40. 40.Which of these is reuse (use again)? (a) melt glass into new jars (b) reuse gift paper (c) print on both sides (d) turn plastic into tiles

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