Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 749 · 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.🪝 A pulley system lifts a 540 N load with an effort of 180 N. What is its mechanical advantage (MA)?
2. 2.⚖️ Going along a lever from one end to the other, the order is: load, fulcrum, effort. Which class of lever is it? (a) class 2 (b) class 3 (c) class 1
3. 3.📐 A model car is drawn so that 1 cm stands for 40 cm. The car is 15 cm long in the drawing. How long is the real car, in centimetres?
4. 4.🏋️ A 12 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
5. 5.True or false: a movable pulley only changes direction. (a) False (b) True
6. 6.🔍 Which is the odd one out? (a) a door stopper (b) a jar lid (c) a wood screw (d) a bottle cap
7. 7.♻️ Which energy source will never run out? (a) coal (b) diesel (c) sunlight (d) petrol
8. 8.🤝 In a design team, who shares out the jobs? (a) tester (b) materials manager (c) team leader (d) builder
9. 9.Which of these makes a building safer in earthquakes? (a) using a heavy roof (b) stacking loose bricks (c) leaving out steel bars (d) using a light roof
10. 10.True or false: a water filter helps people go through a mountain. (a) True (b) False
11. 11.🔄 Which design-process step is it to try it out? (a) Plan (b) Test (c) Create (d) Imagine
12. 12.⚖️ Turning effect = force × … (a) time taken (b) mass of fulcrum (c) colour of bar (d) distance from fulcrum
13. 13.🔍 Which is the odd one out? (a) a tug of war rope (b) a stretched rubber band (c) a table leg (d) a tow rope on a car
14. 14.⚖️ A lever bar balances. The load is 240 N at 50 cm from the fulcrum. The effort is 200 N at ? cm from the fulcrum on the other side. What is the missing distance in centimetres?
15. 15.🔄 After testing, a design does not work well. What comes next? (a) Improve (b) Imagine (c) give up (d) Ask
16. 16.🏚️ Does raising heavy tanks high make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
17. 17.True or false: a tunnel helps people go through a mountain. (a) True (b) False
18. 18.🧑‍🔧 Which kind of engineer designs a metro tunnel? (a) computer (b) civil (c) chemical (d) electrical
19. 19.🦺 In the workshop, is it safe to tie back long hair? (a) not safe (b) safe
20. 20.Which of these is a lever? (a) a truck loading ramp (b) a water tap handle (c) a crowbar (d) a window blind cord
21. 21.True or false: a fixed pulley hangs on the rope loop. (a) False (b) True
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 350 g and design C held 400 g. Which design was the weakest? (a) design A (b) design B (c) design C
23. 23.⚖️ What is the pivot point of a lever called? (a) the fulcrum (b) the load (c) the effort (d) the axle
24. 24.📐 On a plan, 1 cm stands for 2 m. A wall is 2 cm long on the plan. How long is the real wall, in metres?
25. 25.Which of these uses triangles? (a) a truss bridge side (b) a lintel over a door (c) a fort gateway (d) a round palace roof
26. 26.🔍 Which is the odd one out? (a) graphite (b) cotton cloth (c) clay pottery (d) plastic
27. 27.🔍 Which is the odd one out? (a) use the same load (b) change lots at once (c) use a new load each time (d) test it only once
28. 28.Which of these makes a building safer in earthquakes? (a) stacking loose bricks (b) raising heavy tanks high (c) leaving out steel bars (d) adding steel to concrete
29. 29.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: sandpaper 8 N, ice 2 N, a wooden plank 3 N, a carpet 6 N. Which surface gave the least friction? (a) a carpet (b) sandpaper (c) a wooden plank (d) ice
30. 30.⚙️ Most simple machines make work easier by letting us … (a) stop all friction (b) use a smaller force (c) switch off gravity (d) make new energy
31. 31.True or false: skating on ice gives less friction. (a) True (b) False
32. 32.🪝 Fixed or movable pulley: which one only changes direction? (a) a fixed pulley (b) a movable pulley
33. 33.⚖️ In a class 2 lever, what is in the middle? (a) the axle (b) the load (c) the fulcrum (d) the effort
34. 34.Which need does a bridge meet? (a) cross a wide river (b) see very tiny things (c) carry many people far (d) store water for summer
35. 35.🤝 A team of 5 shares 30 equal jobs fairly. Each job takes 5 minutes. How many minutes does each person work?
36. 36.⚖️ A seesaw balances. Arjun (540 N) sits ? m from the pivot on one side; Zoya (720 N) sits 3 m from the pivot on the other side. What is the missing distance in metres?
37. 37.True or false: a door stopper is a lever. (a) True (b) False
38. 38.🤝 A team of 5 shares 10 equal jobs fairly. Each job takes 9 minutes. How many minutes does each person work?
39. 39.🪢 Which material is good in tension but useless in compression? (a) a concrete block (b) a stone (c) a brick (d) a rope
40. 40.Which of these is made by engineers? (a) a river (b) a bicycle (c) a mountain (d) a rainbow

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