One ampere- turn is equivalent to _____ gilberts
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Mmf in a magnetic circuit corresponds to _____ in an electric circuit
What is the cgs unit of magnetomotive force?
What is the main advantage of temporary magnets?
If the value of 25 a conductor is 1/255 per oCa then the value of 20is
A law stating that the magnetic susceptibilities of most paramagnetic substances are inversely proportional…
A law establishing the fact that the algebraic su of the rises and drops of the mmf around a closed…
Hysteresis loss can be reduced by one of the following.
Electric potential is a _______ quantity.
States that the ratio of the thermal conductivity is proportional to the absolute temperature for all…
The dielectric constant of most materials lies between
What is the diameter of an atom?
In electro-mechanical conversion devices like generators and motors the reason why a small air gap is…
An electron- volt (eV) is a unit of
Electron is a Greek word for
The ability of a material to conduct magnetic flux through it.
The magnetic potential in a magnetic circuit can be measured in terms of
The phenomenon by which a subtracts pieces of iron
Permeance is analogous to
Electric field intensity is measured in
Why is it that the magnitude of magnetomotive force required for air gap is much greater than that required…
If the relative permittivity of a material is 10a then its permittivity is
The induced emf in a wire loop that is moved parallel to a uniform magnetic field is
Hysteresis is a phenomenon of _________ in a magnetic circuit.
The tiniest element of matter
An effect which is generally used in the gausameter to measure flux density.
Which of the following materials has the least hysteresis loop area?
A theorem which states that an electric current flowing in a circuit produces a magnetic field at external…
Which of the following is a paramagnetic material?
The magnetic flux of 2000 lines is how many Maxwells?
______ is an electromagnet with its core in the form of a close magnetic ring.
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