Fundamentals of Electrical Engineering Quiz

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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?

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?

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?

Wb/m2 Signup and view all the answers

What is the purpose of an iron ring with 300 turns in the given problem?

To increase the flux density of the magnetic circuit Signup and view all the answers

What is the primary force responsible for setting up magnetic flux in a magnetic circuit?

Magneto-motive force (MMF) Signup and view all the answers

What is the opposition offered by the magnetic circuit to the magnetic flux?

Reluctance Signup and view all the answers

What is the unit of measurement for magnetic flux?

Weber Signup and view all the answers

According to Faraday's first law, what is the condition for inducing an emf in a conductor?

When a conductor cuts the magnetic flux or a changing magnetic field links with a conductor Signup and view all the answers

What is the driving force for current in an electric circuit?

Electromotive Force (EMF) Signup and view all the answers

What is the relationship between resistance and length of a conductor?

Resistance is directly proportional to length of conductor Signup and view all the answers

What is the type of resistor used in potential divider, welding control circuits, power supplies, and high-voltage applications?

Carbon composition resistor Signup and view all the answers

What is the direct proportional relation between the magnitude of induced emf and the rate of change of flux?

Directly proportional Signup and view all the answers

What is permeability defined for in a magnetic circuit?

Magnetic circuit Signup and view all the answers

What is the unit of measurement for reluctance?

Ampere-turns per weber Signup and view all the answers

What is the name of the law that describes the relation between the induced emf and the rate of change of magnetic flux?

Faraday's law of electromagnetic induction Signup and view all the answers

What is the physical quantity that flows through a conductor in an electric circuit?

Current Signup and view all the answers

Fundamentals of Electrical Engineering Quiz

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