Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 546 · 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 mechanical engineer designs factory machines. (a) True (b) False
2. 2.🔺 Which shape keeps its shape best when its corners are pinned? (a) rectangle (b) square (c) triangle (d) hexagon
3. 3.🔢 To follow the engineering design process, which comes first: “Improve” or “Create”? (a) Create (b) Improve
4. 4.🏋️ A 6 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
5. 5.🔧 Which tool would you use to measure an angle? (a) pliers (b) a protractor (c) a tape measure (d) a hand drill
6. 6.🧱 Which property matters most for a switch contact? (a) electrical conductor (b) heat insulator (c) flexible (d) waterproof
7. 7.🔍 Which is the odd one out? (a) a stretched rubber band (b) a temple column (c) a crane lifting cable (d) a tent guy rope
8. 8.⚖️ A lever bar balances. The load is ? N at 40 cm from the fulcrum. The effort is 200 N at 30 cm from the fulcrum on the other side. What is the missing force in newtons?
9. 9.⚖️ Along a straight bar, measured from the left end, the effort is at 40 cm, the fulcrum at 10 cm and the load at 70 cm. Which class of lever is it? (a) class 1 (b) class 3 (c) class 2
10. 10.True or false: a biomedical engineer designs satellites. (a) True (b) False
11. 11.🏋️ Pushing a crate 6 m took 1560 J of work. What force was used, in newtons?
12. 12.🛠️ People need to cross a wide river. Which invention helps? (a) a tunnel (b) a water filter (c) a bridge (d) a solar panel
13. 13.🏋️ Pushing a crate 1 m took 90 J of work. What force was used, in newtons?
14. 14.🏋️ A smooth ramp is 12 m long and rises 2 m. What effort pushes a 4500 N box up it, in newtons? (ideal ramp, no friction)
15. 15.💪 Is opening a drawer a push or a pull? (a) a push (b) a pull
16. 16.🔺 Which strong shape does a slab over a canal use? (a) triangle (b) beam (c) arch (d) dome
17. 17.True or false: a skipping rope needs a waterproof material. (a) False (b) True
18. 18.🪝 A pulley system has 1 rope section holding up the load. To lift the load by 2 m, how many metres of rope must you pull?
19. 19.🛞 More or less friction: powder on a carrom board? (a) more friction (b) less friction
20. 20.🛠️ Is a dam made by engineers or found in nature? (a) made by engineers (b) found in nature
21. 21.What does the tester do? (a) keeps the team on track (b) tracks what is used up (c) shares out the jobs (d) checks the goals are met
22. 22.🔺 A flat frame has 4 straight sides joined by loose pins at the corners. What is the least number of corner-to-corner braces needed to make it rigid?
23. 23.Which of these needs an electrical conductor? (a) an oven glove (b) a switch contact (c) a water tank (d) a yoga mat
24. 24.⚖️ Turning effect = force × … (a) time taken (b) mass of fulcrum (c) colour of bar (d) distance from fulcrum
25. 25.📐 On a plan, 1 cm stands for 20 m. A wall is 20 cm long on the plan. How long is the real wall, in metres?
26. 26.True or false: to ask who will use it is the Improve step. (a) False (b) True
27. 27.Which of these uses a beam? (a) a round palace roof (b) a shelf on two brackets (c) an electric pylon (d) a planetarium roof
28. 28.⚖️ A lever bar balances. The load is 280 N at 40 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?
29. 29.🏋️ Can a simple machine reduce the work done? (a) no, work stays the same (b) only on Mondays (c) yes, by half (d) yes, always
30. 30.💪 Which force is at work: squeezing a lemon? (a) friction (b) muscular force (c) gravity (d) magnetic force
31. 31.⚖️ Going along a lever from one end to the other, the order is: fulcrum, effort, load. Which class of lever is it? (a) class 3 (b) class 1 (c) class 2
32. 32.📐 A model car is drawn so that 1 cm stands for 20 cm. The car is 14 cm long in the drawing. How long is the real car, in centimetres?
33. 33.True or false: “pushes out on its ends” is an arch bridge. (a) False (b) True
34. 34.📐 A beam is 300 cm long. How long is it in metres? =
35. 35.Which of these is a lever? (a) a screw jack (b) a well-bucket rope wheel (c) a water tap handle (d) a crowbar
36. 36.🏋️ A force of 90 N did 900 J of work. How many metres did the object move?
37. 37.🪢 Tension is a force that … (a) pulls or stretches (b) turns things (c) pushes or squeezes (d) heats things
38. 38.🏚️ What do engineers use to test models of buildings for earthquakes? (a) a microscope (b) a fridge (c) a telescope (d) a shake table
39. 39.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 1700 N box up it, in newtons? (ideal ramp, no friction)
40. 40.⚖️ A lever bar balances. The load is ? N at 30 cm from the fulcrum. The effort is 90 N at 60 cm from the fulcrum on the other side. What is the missing force in newtons?

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