Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 352 · 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.🛞 Is friction helpful or a problem here: tyres wearing down? (a) helpful (b) a problem
2. 2.💪 Is pressing a doorbell a push or a pull? (a) a push (b) a pull
3. 3.🪝 Fixed or movable pulley: which one rises with the load? (a) a movable pulley (b) a fixed pulley
4. 4.🌉 Which bridge type: “deck hangs from cables”? (a) suspension bridge (b) arch bridge (c) beam bridge
5. 5.🔍 Which is the odd one out? (a) a bottle cap (b) a claw hammer on a nail (c) a nut and bolt (d) a wood screw
6. 6.♻️ A project report has 86 pages. How many sheets of paper are needed if it is printed on both sides of each sheet?
7. 7.🛠️ People need to store water for summer. Which invention helps? (a) a dam (b) a lift (c) a train (d) a water filter
8. 8.⚖️ Which class of lever is a fishing rod? (a) class 1 (b) class 3 (c) class 2
9. 9.🔍 Which is the odd one out? (a) building tall and narrow (b) fitting rubber base pads (c) adding steel to concrete (d) using flexible joints
10. 10.🏚️ Why is a wide base safer? (a) it is colourful (b) it is lighter (c) it is harder to tip over (d) it is taller
11. 11.⚖️ A seesaw balances. Zoya (? N) sits 4 m from the pivot on one side; Meena (520 N) sits 1 m from the pivot on the other side. What is the missing weight in newtons?
12. 12.Which of these is caused by gravity? (a) a magnet picks up pins (b) a river flows downhill (c) a rolling ball slows (d) squeezing a lemon
13. 13.Which of these makes a building safer in earthquakes? (a) using a heavy roof (b) adding cross bracing (c) making brittle joints (d) building tall and narrow
14. 14.🔺 A flat frame has 7 straight sides joined by loose pins at the corners. What is the least number of corner-to-corner braces needed to make it rigid?
15. 15.⚙️ Most simple machines make work easier by letting us … (a) stop all friction (b) switch off gravity (c) make new energy (d) use a smaller force
16. 16.Which of these is reduce (use less)? (a) switch off unused lights (b) plant in old tyres (c) use a jar as a pen stand (d) reuse gift paper
17. 17.🪝 Fixed or movable pulley: which one is on a flagpole top? (a) a fixed pulley (b) a movable pulley
18. 18.🏚️ What do engineers use to test models of buildings for earthquakes? (a) a shake table (b) a microscope (c) a fridge (d) a telescope
19. 19.🔍 Which is the odd one out? (a) a steering wheel (b) an axe blade (c) a chisel (d) a knife edge
20. 20.Which job is a screwdriver for? (a) measure a long length (b) make a hole in wood (c) turn a screw (d) measure an angle
21. 21.True or false: a solar panel helps people talk to someone far away. (a) False (b) True
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.🌉 A beam bridge is 600 m long. Piers split it into equal spans of 50 m. How many spans are there?
24. 24.🏚️ Does raising heavy tanks high make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
25. 25.🏋️ Can a simple machine reduce the work done? (a) no, work stays the same (b) yes, by half (c) only on Mondays (d) yes, always
26. 26.⚖️ A seesaw balances. Zoya (? N) sits 4 m from the pivot on one side; Asha (400 N) sits 4 m from the pivot on the other side. What is the missing weight in newtons?
27. 27.⚖️ A seesaw balances. Arjun (100 N) sits 4 m from the pivot on one side; Asha (? N) sits 1 m from the pivot on the other side. What is the missing weight in newtons?
28. 28.🧪 A paper bridge was tested three times. It held 370 g, 240 g and 410 g. What is the mean (average) load it held, in grams?
29. 29.True or false: an electrical engineer wires a new building. (a) True (b) False
30. 30.🛠️ Engineers use maths and which other subject the most? (a) science (b) music (c) dance (d) cooking
31. 31.🔢 To follow the engineering design process, which comes first: “Plan” or “Ask”? (a) Plan (b) Ask
32. 32.True or false: a chemical engineer makes medicines in bulk. (a) False (b) True
33. 33.True or false: a lift is made by engineers. (a) False (b) True
34. 34.⚖️ Along a straight bar, measured from the left end, the effort is at 40 cm, the fulcrum at 70 cm and the load at 0 cm. Which class of lever is it? (a) class 1 (b) class 2 (c) class 3
35. 35.🛞 Is friction helpful or a problem here: gripping a cricket bat? (a) a problem (b) helpful
36. 36.⚖️ Along a straight bar, measured from the left end, the effort is at 0 cm, the fulcrum at 40 cm and the load at 60 cm. Which class of lever is it? (a) class 3 (b) class 1 (c) class 2
37. 37.🧱 Which material is best for a raincoat? (a) cotton wool (b) cardboard (c) plastic-coated cloth (d) paper
38. 38.🦺 In the workshop, is it safe to carry scissors closed? (a) safe (b) not safe
39. 39.🌉 Which bridge type: “a flat deck on piers”? (a) arch bridge (b) suspension bridge (c) beam bridge
40. 40.🪝 A winch has a wheel of radius 16 cm and an axle of radius 4 cm. What effort on the wheel lifts a 360 N bucket on the axle, in newtons? (ideal)

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