SFT3013 E2 - MAGNETIC SWEEPER

1. 1. What is the primary principle behind the Magnetic Sweeper's operation?

• 1. a) Electric conductivity

• 1. b) Magnetic attraction

• 1. c) Thermal expansion

• 1. d) Gravitational pull

2. 2. Which materials are attracted to the Magnetic Sweeper?

• a) Plastic and rubber

• b) Iron, nickel, and cobalt

• c) Aluminum and copper

• d) Wood and glass

1. 3. What type of magnet was ultimately chosen for the sweeper to improve performance?

• 1. a) Ceramic magnets

• 1. b) Neodymium magnets

• 1. c) Electromagnets

• 1. d) Temporary magnets

1. 4. In which settings is the Magnetic Sweeper particularly useful? (Select all that apply)

• 1. a) Construction sites

• 1. b) Recycling centers

• 1. c) Offices

• 1. d) Agricultural fields

1. 5. How does the sweeper reduce energy dependency compared to other tools?

• 1. a) It uses solar power

• 1. b) It requires no electricity

• 1. c) It has rechargeable batteries

• 1. d) It uses kinetic energy

1. 6. What factor does NOT affect the magnetic attraction force in the sweeper?

• 1. a) Distance from the magnet (r)

• 1. b) Magnetic field strength (B)

• 1. c) Color of the debris

• 1. d) Material’s permeability (µ)

1. 7. What was a key challenge faced during the project, and how was it solved?

• 1. a) Heavy weight → Added wheels

• 1. b) Weak magnets → Switched to neodymium

• 1. c) High cost → Used plastic magnets

• 1. d) Rust issues → Painted the sweeper

1. 8. Which feature makes the sweeper eco-friendly?

• 1. a) Biodegradable materials

• 1. b) No electricity needed

• 1. c) Solar-powered motor

• 1. d) Automated sensors

1. 9. What improvement was suggested to enhance the sweeper’s durability?

• 1. a) Add a protective cover against dust/rust

• 1. b) Use cheaper materials

• 1. c) Remove the handle

• 1. d) Make it battery-operated

1. 10. How does the project connect to physics concepts?

• 1. a) Demonstrates gravitational waves

• 1. b) Applies magnetic fields and ferromagnetism

• 1. c) Explores quantum tunneling

• 1. d) Uses Archimedes’ principle