Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 281 · 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.⚖️ Turning effect = force × … (a) colour of bar (b) mass of fulcrum (c) distance from fulcrum (d) time taken
2. 2.🪝 More rope sections holding a load means … (a) the load floats (b) more effort needed (c) no change (d) less effort needed
3. 3.🪝 A well winch has a handle (wheel) of radius 10 cm turning an axle of radius 5 cm. What is its mechanical advantage (MA)?
4. 4.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) load it with coins (b) sketch three ideas
5. 5.🧑‍🔧 Which branch of engineering designs machines with moving parts? (a) mechanical (b) civil (c) biomedical (d) chemical
6. 6.📐 A model car is drawn so that 1 cm stands for 30 cm. The car is 8 cm long in the drawing. How long is the real car, in centimetres?
7. 7.🔍 Which is the odd one out? (a) change lots at once (b) change only one thing (c) record every result (d) use the same load
8. 8.Which of these needs a waterproof material? (a) a roof sheet (b) a car windscreen (c) a cooking pot handle (d) the core of a wire
9. 9.True or false: a pair of kitchen tongs is a class 3 lever (effort in the middle). (a) True (b) False
10. 10.⚖️ Which class of lever is a pair of pliers? (a) class 3 (b) class 1 (c) class 2
11. 11.🪢 A beam rests on two supports and is pressed down in the middle. Its bottom edge is … (a) twisted (b) squeezed (compression) (c) not affected (d) stretched (tension)
12. 12.💪 Is pushing a trolley a push or a pull? (a) a push (b) a pull
13. 13.🛞 More or less friction: chalk on a gym bar? (a) more friction (b) less friction
14. 14.Which of these uses a dome? (a) a round palace roof (b) a shelf on two brackets (c) a curved stone doorway (d) a crane arm
15. 15.🌉 Which bridge type: “pushes out on its ends”? (a) arch bridge (b) beam bridge (c) suspension bridge
16. 16.True or false: pulling a cart is a push. (a) True (b) False
17. 17.🏋️ A smooth ramp is 6 m long and rises 1 m. What effort pushes a 1500 N box up it, in newtons? (ideal ramp, no friction)
18. 18.⚖️ In a class 2 lever, what is in the middle? (a) the axle (b) the fulcrum (c) the effort (d) the load
19. 19.📐 A model car is drawn so that 1 cm stands for 30 cm. The car is 5 cm long in the drawing. How long is the real car, in centimetres?
20. 20.🔍 Which is the odd one out? (a) a swing chain (b) a stone in an arch (c) a pillar under a roof (d) a temple column
21. 21.⚖️ In a class 1 lever, what is in the middle? (a) nothing (b) the fulcrum (c) the load (d) the effort
22. 22.True or false: a crane lifting cable is in compression (pushed). (a) False (b) True
23. 23.Which of these is caused by gravity? (a) a fridge magnet sticks (b) brakes stop a bicycle (c) rain falls to the ground (d) shoes grip the floor
24. 24.🔍 Which is the odd one out? (a) a water tap handle (b) an axe blade (c) a door stopper (d) a knife edge
25. 25.⚖️ A lever bar balances. The load is ? N at 20 cm from the fulcrum. The effort is 20 N at 70 cm from the fulcrum on the other side. What is the missing force in newtons?
26. 26.🤝 A teammate’s idea seems odd. What should you do first? (a) walk away (b) ignore it (c) laugh at it (d) listen and ask why
27. 27.🔺 Why can an arch carry heavy loads? (a) it works in compression (b) it bends easily (c) it is very light (d) it is hollow
28. 28.🪢 Tension or compression: a tug of war rope? (a) compression (b) tension
29. 29.True or false: to draw a labelled diagram is the Test step. (a) False (b) True
30. 30.True or false: a ceiling fan is made by engineers. (a) False (b) True
31. 31.🛞 Is friction helpful or a problem here: a door hinge squeaking? (a) helpful (b) a problem
32. 32.🤝 In a design team, who writes down results? (a) team leader (b) recorder (c) builder (d) tester
33. 33.🌉 Which bridge type can cross the widest gap in one span? (a) log bridge (b) arch bridge (c) beam bridge (d) suspension bridge
34. 34.True or false: adding steel to concrete makes a building safer in earthquakes. (a) True (b) False
35. 35.⚖️ A seesaw balances. Kabir (? N) sits 3 m from the pivot on one side; Arjun (600 N) sits 1 m from the pivot on the other side. What is the missing weight in newtons?
36. 36.🔢 To follow the engineering design process, what comes right after “Create”? (a) Improve (b) Plan (c) Imagine (d) Test
37. 37.📋 Constraint: the tower must be no taller than 30 cm. The team’s tower is 32 cm tall. Is it within the constraint? (a) No (b) Yes
38. 38.Which of these is caused by muscular force? (a) an apple falls down (b) brakes stop a bicycle (c) squeezing a lemon (d) rain falls to the ground
39. 39.🪝 What does a single fixed pulley change? (a) gravity (b) the size of the load (c) the direction of pull (d) the colour of rope
40. 40.What does the tester do? (a) cuts and joins parts (b) runs the tests (c) collects the supplies (d) keeps the design notes

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