Eddy current and its applications

What causes the generation of eddy currents?

• Magnetic field
• Electrical charge
• Friction
• Heat

Which material is generally used to minimize eddy current losses?

• Copper
• Iron
• Aluminum
• Silver

Eddy currents find significant applications in which of the following devices?

• Induction cooktop
• LED bulbs
• Mechanical watch
• Vacuum cleaner

In which direction do eddy currents flow?

• Clockwise
• Counterclockwise
• Radially outward
• Radially inward

Which parameter affects the magnitude of eddy currents in a conductor?

• Temperature
• Length
• Cross-sectional area
• Resistivity

Eddy current braking is commonly used in which type of transportation?

• Cars
• Bicycles
• Trains
• Boats

Which material is preferred for making the core of a transformer to reduce eddy current losses?

• Plastic
• Copper
• Glass
• Laminated silicon

Eddy currents are an example of which type of current?

• Alternating current
• Direct current
• Electromagnetic
• Nuclear

What is the primary cause of energy dissipation in eddy currents?

• Friction
• Heat
• Light
• Magnetic field

What happens to the amplitude of eddy currents when the frequency of the magnetic field increases?

• Increases
• Decreases
• Remains constant
• Becomes zero