Podcast
Questions and Answers
What is the magnetic circuit?
What is the magnetic circuit?
- A device to insulate magnetic fields
- A tool to measure magnetic fields
- A path for electric current
- A closed path for magnetic flux (correct)
What is the relationship between MMF and reluctance in a magnetic circuit?
What is the relationship between MMF and reluctance in a magnetic circuit?
- MMF = reluctance - flux
- MMF = flux ÷ reluctance (correct)
- MMF = flux × reluctance
- MMF = reluctance × flux
What is the main difference between electric and magnetic circuits in terms of energy?
What is the main difference between electric and magnetic circuits in terms of energy?
- Energy is only needed for the establishment of the electric field, but not needed to maintain it
- Energy is needed continuously for both electric and magnetic circuits
- Energy is only needed for the establishment of the magnetic field, but not needed to maintain it (correct)
- Energy is only needed for the maintenance of both electric and magnetic fields
What is the unit of flux density of iron in the given problem?
What is the unit of flux density of iron in the given problem?
What is the purpose of an iron ring with 300 turns in the given problem?
What is the purpose of an iron ring with 300 turns in the given problem?
What is the primary force responsible for setting up magnetic flux in a magnetic circuit?
What is the primary force responsible for setting up magnetic flux in a magnetic circuit?
What is the opposition offered by the magnetic circuit to the magnetic flux?
What is the opposition offered by the magnetic circuit to the magnetic flux?
What is the unit of measurement for magnetic flux?
What is the unit of measurement for magnetic flux?
According to Faraday's first law, what is the condition for inducing an emf in a conductor?
According to Faraday's first law, what is the condition for inducing an emf in a conductor?
What is the driving force for current in an electric circuit?
What is the driving force for current in an electric circuit?
What is the relationship between resistance and length of a conductor?
What is the relationship between resistance and length of a conductor?
What is the type of resistor used in potential divider, welding control circuits, power supplies, and high-voltage applications?
What is the type of resistor used in potential divider, welding control circuits, power supplies, and high-voltage applications?
What is the direct proportional relation between the magnitude of induced emf and the rate of change of flux?
What is the direct proportional relation between the magnitude of induced emf and the rate of change of flux?
What is permeability defined for in a magnetic circuit?
What is permeability defined for in a magnetic circuit?
What is the unit of measurement for reluctance?
What is the unit of measurement for reluctance?
What is the name of the law that describes the relation between the induced emf and the rate of change of magnetic flux?
What is the name of the law that describes the relation between the induced emf and the rate of change of magnetic flux?
What is the physical quantity that flows through a conductor in an electric circuit?
What is the physical quantity that flows through a conductor in an electric circuit?
Flashcards are hidden until you start studying
