Permeance is analogous to
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What is the maximum number of electrons that can be accommodated in the last orbit of an atom?
Which of the following is used by temporary magnets as the magnetic material?
One of the common application of an air- cored choke.
Why is it that the magnitude of magnetomotive force required for air gap is much greater than that required…
If the number of valence electrons of an atom is exactly 4a then the substance is called
The reluctance of a magnetic circuit varies with
What is the main advantage of temporary magnets?
A magnetic material losses its ferromagnetic properties at a point called
The magnetic field of a magnetized iron bar when strongly heated
The air space between poles of magnets
A positively charged body has
The magnetic field of a bar magnet most closely resembles the magnetic field of
What is the SI unit of specific resistance or resistivity?
A theorem which states that an electric current flowing in a circuit produces a magnetic field at external…
Which of the following electric quantities is vector in character?
A permanent magnet does not exert a force on
Materials whose permeabilities are slightly greater than that of free space
If on looking at any one end of a solenoid; the direction of current flow is found to be clockwise then…
An alloy of 40 percent iron and 60 percent nickel.
What is used as the dielectric material in high voltage transformers?
The property of a material which opposes the creation of magnetic flux in it
A principle that states that only two electrons with different spins are allowed to exist in a given…
The force between two magnetic poles is _____ the relative permeability of the medium.
What is the other name for dielectric strength?
A test charge means a charge of
The ratio between the intensity of magnetization produced in a substance to the magnetizing force producing…
States that the ratio of the thermal conductivity is proportional to the absolute temperature for all…
This paper does not exhibit electricity because it contains the same number of
Residual magnetism refers to the flux densitya which exists in the iron core when the magnetic field…
It is the reciprocal of reluctance and implies the case of readiness with which magnetic flux is developed.
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