Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 962 · 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.⚖️ In a class 3 lever, what is in the middle? (a) the pulley (b) the fulcrum (c) the effort (d) the load
2. 2.⚙️ Which simple machine is a jar lid? (a) lever (b) screw (c) wedge (d) wheel and axle
3. 3.⚖️ Along a straight bar, measured from the left end, the effort is at 10 cm, the fulcrum at 40 cm and the load at 20 cm. Which class of lever is it? (a) class 1 (b) class 2 (c) class 3
4. 4.Which of these is a screw? (a) a chisel (b) a round doorknob (c) a nut and bolt (d) a crowbar
5. 5.True or false: to agree before changing is poor teamwork. (a) True (b) False
6. 6.🏋️ A force of 210 N did 840 J of work. How many metres did the object move?
7. 7.📐 A model car is drawn so that 1 cm stands for 30 cm. The car is 14 cm long in the drawing. How long is the real car, in centimetres?
8. 8.🪢 A stage stands on 3 identical legs and each leg is squeezed with 175 N. What is the total load on the stage, in newtons?
9. 9.True or false: a waterfall is made by engineers. (a) False (b) True
10. 10.♻️ Reduce, reuse or recycle: pulp old paper? (a) reuse (b) reduce (c) recycle
11. 11.True or false: a nutcracker is a class 2 lever (load in the middle). (a) True (b) False
12. 12.🔍 Which is the odd one out? (a) a squeezed spring (b) a tent guy rope (c) a temple column (d) a brick at a wall base
13. 13.🪝 A bucket weighing 230 N is lifted with a single fixed pulley at the top of a well. What effort is needed, in newtons? (ideal pulley, no friction)
14. 14.True or false: a cooking pot handle needs a heat insulator. (a) True (b) False
15. 15.⚙️ Which simple machine is a truck loading ramp? (a) wedge (b) inclined plane (c) pulley (d) wheel and axle
16. 16.🏋️ A machine lifts a load of 150 N when you push with 30 N. What is its mechanical advantage (MA)?
17. 17.🔧 Which tool would you use to check a shelf is level? (a) a spanner (b) a spirit level (c) a hammer (d) a tape measure
18. 18.🏋️ A force of 320 N pushes a cart 8 m along the floor. How much work is done, in joules?
19. 19.🛠️ People need to cross a wide river. Which invention helps? (a) a water filter (b) a bridge (c) a telephone (d) a train
20. 20.🔧 Which tool would you use to tighten a nut? (a) a saw (b) a hand drill (c) a protractor (d) a spanner
21. 21.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: sandpaper 10 N, ice 4 N, a glass sheet 6 N, a wooden plank 7 N. How many newtons more were needed on sandpaper than on ice?
22. 22.💪 Which force is at work: lifting a school bag? (a) friction (b) magnetic force (c) muscular force (d) gravity
23. 23.📐 Why do engineers use scale drawings? (a) to make them pretty (b) to save ink only (c) to hide sizes (d) big things fit on paper
24. 24.🪝 More rope sections holding a load means … (a) the load floats (b) less effort needed (c) no change (d) more effort needed
25. 25.🔍 Which is the odd one out? (a) cut towards your hand (b) touch a hot glue tip (c) run while holding tools (d) put tools back after use
26. 26.📐 On a plan, 1 cm stands for 2 m. A wall is 11 cm long on the plan. How long is the real wall, in metres?
27. 27.🪝 A wheel and axle is a big wheel fixed to … (a) a loose rope (b) a smaller rod (axle) (c) a flat ramp (d) a sharp wedge
28. 28.Which of these is caused by friction? (a) a rolling ball slows (b) a river flows downhill (c) pedalling a cycle (d) lifting a school bag
29. 29.True or false: “pushes out on its ends” is a beam bridge. (a) True (b) False
30. 30.⚖️ A seesaw balances. Kabir (560 N) sits ? m from the pivot on one side; Asha (280 N) sits 4 m from the pivot on the other side. What is the missing distance in metres?
31. 31.Which of these is a wheel and axle? (a) a crane hook block (b) a steering wheel (c) a door stopper (d) a crowbar
32. 32.Which job is a spirit level for? (a) measure an angle (b) smooth a rough edge (c) make a hole in wood (d) check a shelf is level
33. 33.⚙️ How many simple machines are there in the usual list? (a) 12 (b) 6 (c) 3 (d) 10
34. 34.🔍 Which is the odd one out? (a) a wheel on ball bearings (b) a grippy rubber sole (c) a tyre with deep treads (d) sand on a slippery path
35. 35.True or false: to do all the work alone is poor teamwork. (a) True (b) False
36. 36.⚖️ Along a straight bar, measured from the left end, the effort is at 70 cm, the fulcrum at 40 cm and the load at 0 cm. Which class of lever is it? (a) class 3 (b) class 2 (c) class 1
37. 37.True or false: to repeat each test is good testing. (a) True (b) False
38. 38.True or false: a ceiling fan is found in nature. (a) True (b) False
39. 39.🧑‍🔧 Which branch of engineering designs buildings, roads and bridges? (a) civil (b) chemical (c) biomedical (d) computer
40. 40.🛞 Is friction helpful or a problem here: brakes stopping a cycle? (a) helpful (b) a problem

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