Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 754 · 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.True or false: to hide a failed test is poor testing. (a) False (b) True
2. 2.🔍 Which is the odd one out? (a) use at most 20 straws (b) spend at most ₹100 (c) use only paper and tape (d) float for 1 minute
3. 3.📐 A beam is 390 cm long. How long is it in metres? =
4. 4.📐 How many centimetres are in 1 metre? (a) 1000 (b) 100 (c) 10 (d) 60
5. 5.True or false: to cut away from your body is safe. (a) False (b) True
6. 6.⚖️ A lever bar balances. The load is 60 N at 20 cm from the fulcrum. The effort is ? N at 20 cm from the fulcrum on the other side. What is the missing force in newtons?
7. 7.💪 Which force pulls everything towards the Earth? (a) wind (b) gravity (c) friction (d) magnetism
8. 8.🔺 A frame shaped like a square is made of straws joined by loose pins, with 0 corner-to-corner braces. Is it rigid or wobbly? (a) rigid (b) wobbly
9. 9.Which of these is caused by gravity? (a) a fridge magnet sticks (b) a rolling ball slows (c) rubbing hands warms them (d) an apple falls down
10. 10.🦺 What protects your eyes when sawing or drilling? (a) a cap (b) safety goggles (c) sunglasses (d) nothing
11. 11.Which job does a computer engineer do? (a) designs power lines (b) designs school networks (c) refines crude oil (d) designs a metro tunnel
12. 12.🔢 To follow the engineering design process, which comes first: “Plan” or “Test”? (a) Test (b) Plan
13. 13.🏋️ A smooth ramp is 4 m long and rises 2 m. What effort pushes a 1000 N box up it, in newtons? (ideal ramp, no friction)
14. 14.🪝 What does a single fixed pulley change? (a) the colour of rope (b) the direction of pull (c) the size of the load (d) gravity
15. 15.💪 Which can a force NOT do? (a) stop it moving (b) change its colour (c) change its shape (d) start it moving
16. 16.📋 Your team’s budget is ₹71. You must buy one roll of tape for ₹10. Straws cost ₹4 each. What is the greatest number of straws you can buy?
17. 17.🪢 Tension or compression: a temple column? (a) tension (b) compression
18. 18.🛠️ Is a cloud made by engineers or found in nature? (a) found in nature (b) made by engineers
19. 19.🔍 Which is the odd one out? (a) chalk on a gym bar (b) a tyre with deep treads (c) a smooth steel slide (d) sand on a slippery path
20. 20.📐 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?
21. 21.True or false: a lemon squeezer is a class 3 lever (effort in the middle). (a) True (b) False
22. 22.⚖️ In a class 3 lever, what is in the middle? (a) the effort (b) the pulley (c) the fulcrum (d) the load
23. 23.♻️ Reduce, reuse or recycle: plant in old tyres? (a) reduce (b) recycle (c) reuse
24. 24.🪢 A sign weighing 120 N hangs from 3 identical vertical ropes that share the load equally. What is the tension in each rope, in newtons?
25. 25.⚖️ A seesaw balances. Ravi (400 N) sits ? m from the pivot on one side; Meena (400 N) sits 2 m from the pivot on the other side. What is the missing distance in metres?
26. 26.Which of these happens in the Ask step? (a) check it against goals (b) make it better, retest (c) think of wild ideas (d) find the limits
27. 27.📐 Why do engineers use scale drawings? (a) to make them pretty (b) to save ink only (c) big things fit on paper (d) to hide sizes
28. 28.⚖️ Turning effect = force × … (a) distance from fulcrum (b) time taken (c) mass of fulcrum (d) colour of bar
29. 29.Which of these makes a building less safe in earthquakes? (a) making brittle joints (b) using a light roof (c) adding steel to concrete (d) having a wide base
30. 30.True or false: to leave tools on the floor is safe. (a) False (b) True
31. 31.💪 In a tug of war, one team pulls left with 75 N and the other pulls right with 25 N. What is the size of the net force, in newtons?
32. 32.True or false: “use at most 20 straws” is a criterion (a goal). (a) False (b) True
33. 33.True or false: a water tank needs an electrical conductor. (a) False (b) True
34. 34.🏋️ A machine lifts a load of 570 N when you push with 190 N. What is its mechanical advantage (MA)?
35. 35.🌉 A beam bridge 40 m long rests on the two river banks and on piers in between, making equal spans of 20 m. How many piers are there?
36. 36.🤝 How do engineers share a design with others? (a) clear labelled sketches (b) only talking fast (c) secret notes (d) no drawings at all
37. 37.🔄 Is the engineering design process done only once? (a) no, it repeats (b) yes, only once (c) only on Sundays (d) only for big jobs
38. 38.🏚️ Does stacking loose bricks make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
39. 39.True or false: a switch contact needs a heat insulator. (a) False (b) True
40. 40.🌉 Which bridge type: “a log across a stream”? (a) beam bridge (b) arch bridge (c) suspension bridge

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