Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 303 · 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 well winch has a handle (wheel) of radius 7 cm turning an axle of radius 1 cm. What is its mechanical advantage (MA)?
2. 2.🏋️ Mechanical advantage (MA) = … (a) load + effort (b) effort ÷ load (c) load ÷ effort (d) load × effort
3. 3.True or false: a movable pulley rises with the load. (a) True (b) False
4. 4.🛞 More or less friction: sand on a slippery path? (a) more friction (b) less friction
5. 5.📐 On a plan, 1 cm stands for 10 m. A wall is 11 cm long on the plan. How long is the real wall, in metres?
6. 6.🛠️ Is a banyan tree made by engineers or found in nature? (a) made by engineers (b) found in nature
7. 7.💪 Which force is at work: rubbing hands warms them? (a) friction (b) magnetic force (c) muscular force (d) gravity
8. 8.⚖️ A lever bar balances. The load is ? N at 30 cm from the fulcrum. The effort is 90 N at 20 cm from the fulcrum on the other side. What is the missing force in newtons?
9. 9.True or false: adding cross bracing makes a building less safe in earthquakes. (a) False (b) True
10. 10.Which of these is a screw? (a) a wood screw (b) a knife edge (c) the tip of a nail (d) a door stopper
11. 11.🔍 Which is the odd one out? (a) aluminium (b) rubber (c) brass (d) iron
12. 12.🔍 Which is the odd one out? (a) rubber (b) brass (c) plastic (d) glass
13. 13.📐 Why do engineers use scale drawings? (a) big things fit on paper (b) to hide sizes (c) to save ink only (d) to make them pretty
14. 14.True or false: a seesaw is a class 1 lever (fulcrum in the middle). (a) False (b) True
15. 15.True or false: a fishing rod is a class 2 lever (load in the middle). (a) False (b) True
16. 16.🔄 Which design-process step is it to follow the plan to build? (a) Create (b) Plan (c) Imagine (d) Ask
17. 17.📐 A model car is drawn so that 1 cm stands for 10 cm. The car is 9 cm long in the drawing. How long is the real car, in centimetres?
18. 18.🪢 Compression is a force that … (a) pulls or stretches (b) cools things (c) pushes or squeezes (d) makes light
19. 19.♻️ Is petrol a renewable or a non-renewable energy source? (a) non-renewable (b) renewable
20. 20.📋 Criteria are … (a) the tools you use (b) the team names (c) goals a design must meet (d) the limits on money
21. 21.🔺 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?
22. 22.Which need does a tunnel meet? (a) make power from sunlight (b) go through a mountain (c) carry many people far (d) keep food fresh longer
23. 23.True or false: a volcano is found in nature. (a) False (b) True
24. 24.🪝 Fixed or movable pulley: which one needs effort = load? (a) a fixed pulley (b) a movable pulley
25. 25.♻️ Reduce, reuse or recycle: melt cans into new cans? (a) reuse (b) recycle (c) reduce
26. 26.Which of these is made by engineers? (a) a railway track (b) a banyan tree (c) a coral reef (d) a cloud
27. 27.⚖️ A lever bar balances. The load is 140 N at ? cm from the fulcrum. The effort is 40 N at 70 cm from the fulcrum on the other side. What is the missing distance in centimetres?
28. 28.🤝 In a design team, who shares out the jobs? (a) builder (b) team leader (c) tester (d) materials manager
29. 29.⚖️ Which class of lever is a pair of kitchen tongs? (a) class 1 (b) class 2 (c) class 3
30. 30.Which of these is caused by muscular force? (a) squeezing a lemon (b) shoes grip the floor (c) a fridge magnet sticks (d) a river flows downhill
31. 31.🛞 Is friction helpful or a problem here: writing with a pencil? (a) helpful (b) a problem
32. 32.🦺 How should you carry scissors? (a) points up, open (b) by the blades (c) points down, closed (d) while running
33. 33.📋 Your team’s budget is ₹113. You must buy one roll of tape for ₹15. Straws cost ₹5 each. What is the greatest number of straws you can buy?
34. 34.True or false: a knife edge is a lever. (a) True (b) False
35. 35.🔢 To follow the engineering design process, which comes first: “Plan” or “Create”? (a) Plan (b) Create
36. 36.🛠️ People need to talk to someone far away. Which invention helps? (a) a telephone (b) a train (c) a tunnel (d) a fridge
37. 37.Which of these is a lever? (a) a bottle opener (b) a jar lid (c) a window blind cord (d) a door stopper
38. 38.🏋️ Work is done when a force moves something … (a) very slowly (b) through a distance (c) only upwards (d) without moving it
39. 39.🪝 A load of 870 N hangs from a pulley system in which 3 rope sections hold up the load. What effort is needed, in newtons? (ideal pulleys)
40. 40.🔍 Which is the odd one out? (a) a crane hook block (b) a playground slide (c) a wheelchair ramp (d) a road up a hill

Free engineering lessons, practice and worksheets at talentjr.in/engineering-for-kids