Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 201 · 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.Which of these is in tension (pulled)? (a) a temple column (b) a stone in an arch (c) a tow rope on a car (d) a brick at a wall base
2. 2.💪 A cart is pulled to the right with 95 N and to the left with 90 N. Which way does the net force act? (a) to the right (b) no net force (c) to the left
3. 3.📐 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?
4. 4.Which of these makes a building safer in earthquakes? (a) leaving out steel bars (b) making brittle joints (c) using a heavy roof (d) keeping a simple shape
5. 5.Which of these makes a building safer in earthquakes? (a) having a wide base (b) building tall and narrow (c) raising heavy tanks high (d) stacking loose bricks
6. 6.True or false: a pair of pliers is a class 1 lever (fulcrum in the middle). (a) False (b) True
7. 7.⚖️ A lever bar balances. The load is 320 N at 40 cm from the fulcrum. The effort is 320 N at ? cm from the fulcrum on the other side. What is the missing distance in centimetres?
8. 8.True or false: a squeezed spring is in tension (pulled). (a) True (b) False
9. 9.⚖️ A lever balances when … (a) the bar is short (b) both weights are equal (c) turning effects match (d) the fulcrum moves
10. 10.Which of these is caused by gravity? (a) rubbing hands warms them (b) an apple falls down (c) lifting a school bag (d) a magnet picks up pins
11. 11.🏚️ Where should heavy water tanks go in a quake zone? (a) hanging outside (b) on the very top (c) on a thin pole (d) low down
12. 12.True or false: a tug of war rope is in compression (pushed). (a) False (b) True
13. 13.🏋️ In which unit is work measured? (a) metre (m) (b) watt hour (c) newton (N) (d) joule (J)
14. 14.🔺 Which strong shape does an electric pylon use? (a) triangle (b) dome (c) beam (d) arch
15. 15.🤝 A teammate’s idea seems odd. What should you do first? (a) walk away (b) listen and ask why (c) ignore it (d) laugh at it
16. 16.Which of these makes a building less safe in earthquakes? (a) raising heavy tanks high (b) having a wide base (c) using flexible joints (d) adding cross bracing
17. 17.🪢 Which material is good in tension but useless in compression? (a) a brick (b) a stone (c) a rope (d) a concrete block
18. 18.🧑‍🔧 Which kind of engineer plans a dam? (a) mechanical (b) aerospace (c) civil (d) electrical
19. 19.🦺 In the workshop, is it safe to play near a moving drill? (a) not safe (b) safe
20. 20.True or false: closing a drawer is a push. (a) True (b) False
21. 21.⚙️ How many simple machines are there in the usual list? (a) 12 (b) 6 (c) 10 (d) 3
22. 22.📋 Criterion: the model bridge must hold at least 200 g. In the test it held 100 g. Does it meet the criterion? (a) No (b) Yes
23. 23.⚖️ A seesaw balances. Ravi (? N) sits 3 m from the pivot on one side; Kabir (450 N) sits 1 m from the pivot on the other side. What is the missing weight in newtons?
24. 24.📋 Criterion: the model bridge must hold at least 300 g. In the test it held 350 g. Does it meet the criterion? (a) Yes (b) No
25. 25.Which of these is reduce (use less)? (a) melt glass into new jars (b) buy less packaging (c) plant in old tyres (d) pulp old paper
26. 26.♻️ Is ocean wave energy a renewable or a non-renewable energy source? (a) renewable (b) non-renewable
27. 27.🪝 Fixed or movable pulley: which one rises with the load? (a) a movable pulley (b) a fixed pulley
28. 28.Which of these is an inclined plane? (a) a door stopper (b) a crowbar (c) a road up a hill (d) a jar lid
29. 29.🛞 Is friction helpful or a problem here: writing with a pencil? (a) helpful (b) a problem
30. 30.What does the materials manager do? (a) cuts and joins parts (b) writes down results (c) tracks what is used up (d) keeps the team on track
31. 31.🪝 A well winch has a handle (wheel) of radius 20 cm turning an axle of radius 4 cm. What is its mechanical advantage (MA)?
32. 32.True or false: to hide a mistake is poor teamwork. (a) False (b) True
33. 33.⚖️ Which class of lever is a seesaw? (a) class 3 (b) class 2 (c) class 1
34. 34.⚖️ A seesaw balances. Zoya (200 N) sits 1 m from the pivot on one side; Arjun (? N) sits 2 m from the pivot on the other side. What is the missing weight in newtons?
35. 35.🧱 Which material is best for a raincoat? (a) cardboard (b) plastic-coated cloth (c) cotton wool (d) paper
36. 36.📋 For a model bridge challenge, is “use only paper and tape” a constraint or a criterion? (a) a criterion (b) a constraint
37. 37.🔢 To follow the engineering design process, which comes first: “Create” or “Plan”? (a) Plan (b) Create
38. 38.⚖️ A lever bar balances. The load is 800 N at ? cm from the fulcrum. The effort is 300 N at 80 cm from the fulcrum on the other side. What is the missing distance in centimetres?
39. 39.📋 Criteria are … (a) goals a design must meet (b) the team names (c) the limits on money (d) the tools you use
40. 40.True or false: a pillar under a roof is in tension (pulled). (a) True (b) False

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