Defined as the number of lines per unit area through any substance in a plane at right angles to the lines of force
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A magnetic circuit carries a flux iin the iron part and a fluxgin the air gap. What is the leakage coefficient?
Whenever a conductor cuts magnetic fluxa an emf is induced in it. This is known as
Electronic current in a wire is the flow of ____________ electrons.
Magnetic intensity is a
A magnetic field is
The ratio of the total flux (flux in iron path) to the useful flux (flux in air gap)
Which of the following statements is TRUE?
The force between two magnetic poles varies with the distance between them. The variation is ______…
Who discovered superconductivity in 1911?
Which of the following is a paramagnetic material?
When the ferromagnetic substance is inserted in a current- carrying solenoida the magnetic field is
The process by which an emf and hence current is generated or induced in a conductor when there is a…
What bond is formed when electrons in the outermost energy orbits of the atoms are shared between two…
The branch of Engineering which deals with the magnetic effect of electric current is known as
A theorem which states that an electric current flowing in a circuit produces a magnetic field at external…
Temporary magnets are commonly employed in
All matters (gasa liquid and solid) are composed of
A magnetizing force of 1000 AT/m will produce a flux density of __________ i
Electron is a Greek word for
The property of a material which opposes the creation of magnetic flux in it
One oersted (Oe) is equivalent to _____ Gb/cm.
If two similar charges 1 coulomb each are placed 1 m apart in aira then the force of repulsion is
What is the unit of magnetomotive force?
A length of wire has a resistance of 10 ohms. What is the resistance of a wire of the same material…
If the value of 0 a conductor is 1/234 per oCa then the value of 18is
Steel is hard to magnetize because of its
Who demonstrated that there are magnetic effects around every current-carrying conductor and that current-carrying…
What is the reluctance of a magnetic path having a length of 2x 10^-3m and crosssectional area of 2.5…
Electric field intensity is a ________.
The simplest type of atom to exist is the ______ atom.
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