Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 184 · 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.🪢 Tension is a force that … (a) turns things (b) pushes or squeezes (c) heats things (d) pulls or stretches
2. 2.True or false: leaving out steel bars makes a building less safe in earthquakes. (a) True (b) False
3. 3.True or false: coal is a renewable energy source. (a) False (b) True
4. 4.🪢 Tension or compression: a crane lifting cable? (a) tension (b) compression
5. 5.🌉 Which bridge type: “the simplest bridge”? (a) arch bridge (b) suspension bridge (c) beam bridge
6. 6.🔍 Which is the odd one out? (a) plastic (b) copper (c) graphite (d) iron
7. 7.⚖️ In a class 1 lever, what is in the middle? (a) the effort (b) the load (c) the fulcrum (d) nothing
8. 8.🧱 Which property matters most for a skipping rope? (a) flexible (b) waterproof (c) heat insulator (d) transparent
9. 9.⚖️ A lever bar balances. The load is 200 N at 30 cm from the fulcrum. The effort is ? N at 40 cm from the fulcrum on the other side. What is the missing force in newtons?
10. 10.🌉 In a stone arch bridge, the stones are in … (a) tension (b) no force (c) friction (d) compression
11. 11.⚖️ A lever bar balances. The load is ? N at 30 cm from the fulcrum. The effort is 60 N at 100 cm from the fulcrum on the other side. What is the missing force in newtons?
12. 12.🦺 What protects your eyes when sawing or drilling? (a) nothing (b) a cap (c) sunglasses (d) safety goggles
13. 13.♻️ A school bench is made from 500 recycled plastic bottles. How many benches can be made from 2000 bottles?
14. 14.True or false: “fit on a school desk” is a criterion (a goal). (a) True (b) False
15. 15.⚖️ A seesaw balances. Ravi (180 N) sits ? m from the pivot on one side; Arjun (360 N) sits 1 m from the pivot on the other side. What is the missing distance in metres?
16. 16.True or false: to hide a failed test is poor testing. (a) False (b) True
17. 17.True or false: a seesaw is a class 3 lever (effort in the middle). (a) True (b) False
18. 18.📐 On a plan, 1 cm stands for 5 m. A real bridge is 35 m long. How long is it on the plan, in centimetres?
19. 19.🪝 What does a single fixed pulley change? (a) gravity (b) the size of the load (c) the direction of pull (d) the colour of rope
20. 20.True or false: to test it only once is poor testing. (a) True (b) False
21. 21.⚖️ Turning effect = force × … (a) colour of bar (b) time taken (c) mass of fulcrum (d) distance from fulcrum
22. 22.🧱 Which property matters most for a yoga mat? (a) waterproof (b) flexible (c) electrical conductor (d) transparent
23. 23.🪢 A sign weighing 550 N hangs from 5 identical vertical ropes that share the load equally. What is the tension in each rope, in newtons?
24. 24.🧱 Is plastic an electrical conductor or an insulator? (a) an insulator (b) a conductor
25. 25.🔍 Which is the odd one out? (a) a bridge pier (b) a stone in an arch (c) a table leg (d) a crane lifting cable
26. 26.What does the recorder do? (a) writes down results (b) puts the model together (c) collects the supplies (d) checks the goals are met
27. 27.🪢 Tension or compression: a brick at a wall base? (a) tension (b) compression
28. 28.🌉 A beam bridge is 70 m long. Piers split it into equal spans of 10 m. How many spans are there?
29. 29.🏚️ Does using flexible joints make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
30. 30.⚖️ Which class of lever is a pair of scissors? (a) class 2 (b) class 1 (c) class 3
31. 31.💪 Which force is at work: a compass needle turns? (a) gravity (b) magnetic force (c) friction (d) muscular force
32. 32.⚙️ Which simple machine is a chisel? (a) wedge (b) screw (c) inclined plane (d) lever
33. 33.🪢 Compression is a force that … (a) pulls or stretches (b) makes light (c) cools things (d) pushes or squeezes
34. 34.📋 Your team’s budget is ₹63. You must buy one roll of tape for ₹5. Straws cost ₹2 each. What is the greatest number of straws you can buy?
35. 35.🪢 Tension or compression: a suspension cable? (a) compression (b) tension
36. 36.🔍 Which is the odd one out? (a) a wood screw (b) a jar lid (c) a screw jack (d) a flagpole rope wheel
37. 37.🧑‍🔧 Which kind of engineer designs power lines? (a) civil (b) computer (c) electrical (d) mechanical
38. 38.🏋️ A smooth ramp is 15 m long and rises 3 m. What effort pushes a 4250 N box up it, in newtons? (ideal ramp, no friction)
39. 39.🧑‍🔧 Which branch of engineering works on aeroplanes and rockets? (a) chemical (b) aerospace (c) computer (d) civil
40. 40.True or false: to turn a screw, use pliers. (a) False (b) True

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