Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 848 · 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 model car is drawn so that 1 cm stands for 20 cm. The car is 5 cm long in the drawing. How long is the real car, in centimetres?
2. 2.Which of these uses a beam? (a) a shelf on two brackets (b) a crane arm (c) a fort gateway (d) an igloo
3. 3.♻️ A project report has 72 pages. How many sheets of paper are needed if it is printed on both sides of each sheet?
4. 4.🪝 More rope sections holding a load means … (a) more effort needed (b) no change (c) less effort needed (d) the load floats
5. 5.🔍 Which is the odd one out? (a) use a new load each time (b) repeat each test (c) record every result (d) change only one thing
6. 6.⚙️ A wedge is … (a) a rope on a wheel (b) two ramps back to back (c) a bar on a pivot (d) a wheel on a rod
7. 7.🏋️ A smooth ramp is 6 m long and rises 3 m. What effort pushes a 300 N box up it, in newtons? (ideal ramp, no friction)
8. 8.Which of these makes a building safer in earthquakes? (a) building tall and narrow (b) having a wide base (c) using a heavy roof (d) raising heavy tanks high
9. 9.🔺 How do engineers stop a square frame from wobbling? (a) add a diagonal brace (b) make it bigger (c) take off a side (d) paint it
10. 10.⚖️ Which class of lever is your forearm? (a) class 2 (b) class 3 (c) class 1
11. 11.🤝 In a design team, who collects the supplies? (a) materials manager (b) tester (c) recorder (d) team leader
12. 12.🏚️ Three solid model towers are made of the same material. Tower A is 240 cm tall on a 40 cm wide base, tower B is 80 cm tall on a 10 cm base and tower C is 40 cm tall on a 10 cm base. Which is the hardest to tip over? (a) tower B (b) tower C (c) tower A
13. 13.True or false: a dam helps people talk to someone far away. (a) False (b) True
14. 14.🪝 A winch has a wheel of radius 5 cm and an axle of radius 1 cm. What effort on the wheel lifts a 150 N bucket on the axle, in newtons? (ideal)
15. 15.🧱 Is iron an electrical conductor or an insulator? (a) a conductor (b) an insulator
16. 16.True or false: skating on ice gives more friction. (a) True (b) False
17. 17.⚖️ A seesaw balances. Ravi (400 N) sits 4 m from the pivot on one side; Asha (? N) sits 2 m from the pivot on the other side. What is the missing weight in newtons?
18. 18.💪 A cart is pulled to the right with 25 N and to the left with 30 N. Which way does the net force act? (a) to the left (b) to the right (c) no net force
19. 19.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) choose and draw one (b) read the challenge rules
20. 20.🔍 Which is the odd one out? (a) carry 10 coins (b) stand in a fan breeze (c) use at most 20 straws (d) roll at least 2 metres
21. 21.🤝 Why do engineers work in teams? (a) to work alone (b) to finish nothing (c) many skills and ideas (d) to argue more
22. 22.🏚️ Three solid model towers are made of the same material. Tower A is 60 cm tall on a 30 cm wide base, tower B is 160 cm tall on a 40 cm base and tower C is 180 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower C (b) tower A (c) tower B
23. 23.🛠️ People need to reach a top floor fast. Which invention helps? (a) a telephone (b) a train (c) a lift (d) a fridge
24. 24.🌉 A beam bridge is 90 m long. Piers split it into equal spans of 10 m. How many spans are there?
25. 25.📋 Your team’s budget is ₹72. You must buy one roll of tape for ₹10. Straws cost ₹4 each. What is the greatest number of straws you can buy?
26. 26.🔄 Which design-process step is it to think of wild ideas? (a) Plan (b) Create (c) Imagine (d) Test
27. 27.🤝 In a design team, who puts the model together? (a) materials manager (b) recorder (c) team leader (d) builder
28. 28.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a wooden plank 8 N, a carpet 10 N, ice 3 N, a glass sheet 7 N. Which surface gave the least friction? (a) a wooden plank (b) ice (c) a carpet (d) a glass sheet
29. 29.True or false: to use a cracked tool is not safe. (a) True (b) False
30. 30.True or false: an electrical engineer designs car engines. (a) True (b) False
31. 31.🔺 One side of a straw bridge is a row of 5 triangles standing point-up and point-down in turn, each sharing a side with the next. How many straws does it use?
32. 32.🏋️ A force of 330 N did 1980 J of work. How many metres did the object move?
33. 33.🔄 Which design-process step is it to build the model? (a) Create (b) Ask (c) Imagine (d) Improve
34. 34.True or false: a fixed pulley makes you pull 2× rope. (a) False (b) True
35. 35.True or false: a magnifier lens needs an electrical conductor. (a) False (b) True
36. 36.⚖️ On a seesaw, a heavier child should sit … (a) farther from the pivot (b) anywhere (c) on the pivot (d) closer to the pivot
37. 37.True or false: a fridge helps people keep food fresh longer. (a) False (b) True
38. 38.⚖️ Turning effect = force × … (a) distance from fulcrum (b) mass of fulcrum (c) colour of bar (d) time taken
39. 39.True or false: “pushes out on its ends” is a beam bridge. (a) False (b) True
40. 40.🏚️ Three solid model towers are made of the same material. Tower A is 40 cm tall on a 10 cm wide base, tower B is 10 cm tall on a 10 cm base and tower C is 60 cm tall on a 20 cm base. Which is the hardest to tip over? (a) tower C (b) tower A (c) tower B

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