The core of a magnetic equipment uses a magnetic material with
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What is the maximum number of electrons that can be accommodated in the last orbit of an atom?
The magnetic flux through a coil changes. This results to the induced emf acting in a direction as to
Who demonstrated the theory of electromagnetic induction in 1831?
Who discovered the most important electrical effects which is the magnetic effect?
What is the unit of reluctance?
Which of the following electric quantities is vector in character?
What is the typical saturation flux density for most magnetic materials?
The ability of a material to conduct magnetic flux through it.
The potential at a point due to a charge is 15 V. If the distance is times, the potential at the point…
The uncharged particles which have no effect on its atomic charge.
Define as that pole which when placed in air from a similar and equal pole repels it with a force of…
One coulomb of charge consists of ________ electrons.
______ is an electromagnet with its core in the form of a close magnetic ring.
The permeability of a material having a flux density of 5 Wb/m^2 is 10^-5 H/m. What is the value of…
If the value of 0 a conductor is 1/234 per oCa then the value of 18is
The space outside the magnet where its pole have a force of attraction or repulsion on a magnetic pole…
The B-H curve of ________ is not a straight line.
Permeance is analogous to
The force between two magnetic poles varies with the distance between them. The variation is ______…
If you hold the conductor with right hand so that the stretched thumb points in the direction of the…
Electric field intensity is a ________.
An alloy of 40 percent iron and 60 percent nickel.
If the number of valence electrons of an atom is less than 4a the substance is called
The magnetic field of a bar magnet most closely resembles the magnetic field of
A law relating between the magnetic and electric susceptibilities and the absolute temperatures which…
When the relative permeability of a material is slightly more than 1a it is called ______ material.
A magnetic circuit carries a flux iin the iron part and a fluxgin the air gap. What is the leakage coefficient?
The science of adapting electronics to aerospace flight.
The unit of flux is _____ in cgs system.
Back emf refers to the
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