Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 561 · 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.📐 On a plan, 1 cm stands for 20 m. A wall is 12 cm long on the plan. How long is the real wall, in metres?
2. 2.True or false: natural gas is a non-renewable energy source. (a) True (b) False
3. 3.Which of these uses triangles? (a) a plank over a drain (b) a lintel over a door (c) a bicycle frame (d) a fort gateway
4. 4.🧑‍🔧 Which branch of engineering designs machines with moving parts? (a) mechanical (b) biomedical (c) chemical (d) civil
5. 5.🧱 Is steel an electrical conductor or an insulator? (a) an insulator (b) a conductor
6. 6.🛞 More or less friction: chalk on a gym bar? (a) less friction (b) more friction
7. 7.💪 A cart is pulled to the right with 20 N and to the left with 20 N. Which way does the net force act? (a) to the right (b) to the left (c) no net force
8. 8.🔺 One side of a straw bridge is a row of 9 triangles standing point-up and point-down in turn, each sharing a side with the next. How many straws does it use?
9. 9.Which of these is recycle (make new things)? (a) carry a cloth bag (b) pulp old paper (c) reuse gift paper (d) switch off unused lights
10. 10.🏚️ Three solid model towers are made of the same material. Tower A is 180 cm tall on a 30 cm wide base, tower B is 100 cm tall on a 20 cm base and tower C is 120 cm tall on a 30 cm base. Which is the hardest to tip over? (a) tower C (b) tower B (c) tower A
11. 11.🔺 Which strong shape does a roof truss use? (a) arch (b) dome (c) beam (d) triangle
12. 12.💪 In a tug of war, one team pulls right with 80 N and the other pulls left with 5 N. What is the size of the net force, in newtons?
13. 13.🦺 In the workshop, is it safe to use a cracked tool? (a) safe (b) not safe
14. 14.📐 On a plan, 1 cm stands for 2 m. A wall is 9 cm long on the plan. How long is the real wall, in metres?
15. 15.True or false: a civil engineer designs a flyover. (a) True (b) False
16. 16.🧑‍🔧 Which kind of engineer designs school networks? (a) computer (b) mechanical (c) civil (d) biomedical
17. 17.🌉 In a stone arch bridge, the stones are in … (a) tension (b) no force (c) compression (d) friction
18. 18.🧑‍🔧 Which kind of engineer lays out a highway? (a) chemical (b) civil (c) mechanical (d) electrical
19. 19.🔺 One side of a straw bridge is a row of 6 triangles standing point-up and point-down in turn, each sharing a side with the next. How many straws does it use?
20. 20.Which of these is reuse (use again)? (a) fix a dripping tap (b) give old books away (c) carry a cloth bag (d) turn plastic into tiles
21. 21.📋 Constraint: the tower must be no taller than 50 cm. The team’s tower is 46 cm tall. Is it within the constraint? (a) No (b) Yes
22. 22.🔢 To follow the engineering design process, what comes right after “Imagine”? (a) Test (b) Create (c) Improve (d) Plan
23. 23.📋 A design meets every criterion but costs more than the budget. Is it acceptable? (a) yes, it works (b) no, it breaks a limit (c) yes, always (d) only if it is red
24. 24.⚙️ Which simple machine is a water tap handle? (a) inclined plane (b) lever (c) wheel and axle (d) wedge
25. 25.True or false: a mechanical engineer designs a gearbox. (a) True (b) False
26. 26.📐 A beam is 430 cm long. How long is it in metres? =
27. 27.🧱 Which property matters most for an umbrella cover? (a) electrical conductor (b) transparent (c) heat insulator (d) waterproof
28. 28.⚖️ Which class of lever is a pair of scissors? (a) class 3 (b) class 2 (c) class 1
29. 29.True or false: a movable pulley makes you pull 2× rope. (a) False (b) True
30. 30.True or false: a movable pulley needs effort = load. (a) False (b) True
31. 31.⚖️ A seesaw balances. Arjun (680 N) sits 2 m from the pivot on one side; Asha (? N) sits 4 m from the pivot on the other side. What is the missing weight in newtons?
32. 32.💪 Two children push a box to the right, one with 70 N and the other with 75 N. What is the net (total) force on the box, in newtons?
33. 33.True or false: a suspension cable is in tension (pulled). (a) False (b) True
34. 34.🧑‍🔧 Which branch of engineering works on aeroplanes and rockets? (a) computer (b) chemical (c) aerospace (d) civil
35. 35.Which of these is a beam bridge? (a) deck hangs from cables (b) a curve under the deck (c) a rope bridge in hills (d) a log across a stream
36. 36.True or false: a lintel over a door uses an arch. (a) True (b) False
37. 37.📐 A beam is 420 cm long. How long is it in metres? =
38. 38.⚖️ Going along a lever from one end to the other, the order is: fulcrum, load, effort. Which class of lever is it? (a) class 2 (b) class 3 (c) class 1
39. 39.♻️ A project report has 94 pages. How many sheets of paper are needed if it is printed on both sides of each sheet?
40. 40.⚙️ Which simple machine is a playground slide? (a) screw (b) inclined plane (c) wheel and axle (d) lever

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