Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 471 · 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 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?
2. 2.🔍 Which is the odd one out? (a) raising heavy tanks high (b) keeping a simple shape (c) fitting rubber base pads (d) adding steel to concrete
3. 3.🧑‍🔧 Which branch of engineering uses engineering to help doctors? (a) electrical (b) civil (c) aerospace (d) biomedical
4. 4.🪝 A pulley system has 4 rope sections holding up the load. To lift the load by 1 m, how many metres of rope must you pull?
5. 5.🛠️ People need to keep food fresh longer. Which invention helps? (a) a fridge (b) a telephone (c) a microscope (d) a tunnel
6. 6.True or false: closing a drawer is a pull. (a) True (b) False
7. 7.🏚️ Why are flexible joints good in an earthquake? (a) they are cheap (b) they stop shaking (c) they look nice (d) they bend, not break
8. 8.🔺 A frame shaped like a triangle is made of straws joined by loose pins, with 0 corner-to-corner braces. Is it rigid or wobbly? (a) wobbly (b) rigid
9. 9.🔍 Which is the odd one out? (a) a table leg (b) a tall bridge tower (c) a hanging lamp chain (d) a temple column
10. 10.🤝 How do engineers share a design with others? (a) no drawings at all (b) only talking fast (c) clear labelled sketches (d) secret notes
11. 11.True or false: adding cross bracing makes a building safer in earthquakes. (a) True (b) False
12. 12.🛞 Rubbing your hands fast makes them … (a) wet (b) magnetic (c) cold (d) warm
13. 13.🛠️ Is a water filter made by engineers or found in nature? (a) found in nature (b) made by engineers
14. 14.🪝 A wheel and axle is a big wheel fixed to … (a) a sharp wedge (b) a smaller rod (axle) (c) a flat ramp (d) a loose rope
15. 15.🔍 Which is the odd one out? (a) float for 1 minute (b) spend at most ₹100 (c) fit on a school desk (d) use at most 20 straws
16. 16.True or false: a chemical engineer makes medicines in bulk. (a) False (b) True
17. 17.🤝 Is it good or poor teamwork to ignore the team plan? (a) poor teamwork (b) good teamwork
18. 18.📋 Constraint: the tower must be no taller than 70 cm. The team’s tower is 70 cm tall. Is it within the constraint? (a) Yes (b) No
19. 19.🤝 In a design team, who puts the model together? (a) builder (b) tester (c) recorder (d) team leader
20. 20.Which job does a computer engineer do? (a) plans a space mission (b) refines crude oil (c) builds a website (d) plans a dam
21. 21.⚖️ A seesaw balances. Zoya (300 N) sits 1 m from the pivot on one side; Kabir (150 N) sits ? m from the pivot on the other side. What is the missing distance in metres?
22. 22.📋 For a model bridge challenge, is “finish in 40 minutes” a constraint or a criterion? (a) a constraint (b) a criterion
23. 23.True or false: to skip writing results is poor testing. (a) True (b) False
24. 24.♻️ Reduce, reuse or recycle: reuse gift paper? (a) recycle (b) reduce (c) reuse
25. 25.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) read the challenge rules (b) load it with coins (c) choose and draw one (d) strengthen the weak part
26. 26.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
27. 27.🪢 Which material is good in tension but useless in compression? (a) a brick (b) a stone (c) a concrete block (d) a rope
28. 28.🛠️ Is a railway track made by engineers or found in nature? (a) made by engineers (b) found in nature
29. 29.🪢 A beam rests on two supports and is pressed down in the middle. Its bottom edge is … (a) not affected (b) stretched (tension) (c) squeezed (compression) (d) twisted
30. 30.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) sketch three ideas (b) load it with coins
31. 31.🪝 A winch has a wheel of radius 30 cm and an axle of radius 5 cm. What effort on the wheel lifts a 900 N bucket on the axle, in newtons? (ideal)
32. 32.📋 For a model bridge challenge, is “spend at most ₹100” a constraint or a criterion? (a) a criterion (b) a constraint
33. 33.📋 Your team’s budget is ₹100. You must buy one roll of tape for ₹15. Straws cost ₹4 each. What is the greatest number of straws you can buy?
34. 34.Which of these is a pulley? (a) a steering wheel (b) a wood screw (c) a flagpole rope wheel (d) an axe blade
35. 35.What does the recorder do? (a) collects the supplies (b) runs the tests (c) keeps the design notes (d) tracks what is used up
36. 36.🧪 A paper bridge was tested three times. It held 370 g, 290 g and 330 g. What is the mean (average) load it held, in grams?
37. 37.🌉 A beam bridge is 175 m long. Piers split it into equal spans of 25 m. How many spans are there?
38. 38.🧱 Is iron an electrical conductor or an insulator? (a) an insulator (b) a conductor
39. 39.⚖️ Along a straight bar, measured from the left end, the effort is at 60 cm, the fulcrum at 30 cm and the load at 10 cm. Which class of lever is it? (a) class 3 (b) class 2 (c) class 1
40. 40.Which of these is a suspension bridge? (a) tall towers hold cables (b) a log across a stream (c) a curve under the deck (d) a flat deck on piers

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