The core of a magnetic equipment uses a magnetic material with
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One oersted (Oe) is equivalent to _____ Gb/cm.
Which of the following electric quantities is vector in character?
What is the diameter of an atom?
Which of the following is a natural magnet?
The temperature coefficient of resistance of insulators is
One electron volt (1 eV) is equivalent to _____ joules
Why is it that the magnitude of magnetomotive force required for air gap is much greater than that required…
What bond is formed when one or more electrons in the outermost energy orbit of an atom are transferred…
Flux density is measured in
Another term for corona discharge.
What is the usual value of leakage coefficient for electrical machines?
If the length and area of cross-section of a wire are doubleda then its resistance
Which of the following materials has the highest dielectric strength?
If the value of 25 of a conductor is 1/230 per oCa then the value of 0is
Electromotive force in a circuit
The total number of magnetic lines of force in a magnetic field is called
An electron- volt (eV) is a unit of
The resistivity of a conductor ___________ with an increase in temperature.
The induced emf in a wire loop that is moved parallel to a uniform magnetic field is
The air space between poles of magnets
The magnetic materials should have a large hysteresis loss for one of the following applications.
Magnetic intensity is a
The idea of preventing one component from affecting another through their common electric and magnetic…
Electric field intensity is a ________.
A good conductor has how many valence electrons?
Paramagnetic substance has a relative permeability of
Which of the following is a diamagnetic material?
The property of a material which opposes the creation of magnetic flux in it
One of the solid structures in which the position of the atoms or ions are predetermined
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