Related Questions
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What is the value of the absolute permittivity of air?
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If a magnetic flux cuts across 200 turns at a rate of 2Wb/sa the induced voltage according to Faraday's law is about
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What type of bond is formed when there exists some form of collective interactions between the (negatively charged) electrons and (positively charged) nuclei in a solid?
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One weber of flux is equal to _______ magnetic lines of force.
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All matters (gasa liquid and solid) are composed of
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The core of a magnetic equipment uses a magnetic material with
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What is the usual value of leakage coefficient for electrical machines?
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Refers to the magnetic lines
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The branch of Engineering which deals with the magnetic effect of electric current is known as
C. Electrical engineering
D. Electronics engineering
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When the ferromagnetic substance is inserted in a current- carrying solenoida the magnetic field is
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The property of a material which opposes the creation of magnetic flux in it
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__________ is a substance of whose molecules consist of the same kind of atom.
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Who discovered that a current-carrying conductor would move when placed in a magnetic field?
C. Hans Christian Oersted
D. Gustav Robert Kirchhoff
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What bond is formed when one or more electrons in the outermost energy orbit of an atom are transferred to another?
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The magnetic potential in a magnetic circuit can be measured in terms of
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The magnetic flux through a wire loop in a magnetic field does not d
B. The magnitude of the field
D. The angle between the plane of the loop and the direction
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The temperature coefficient of resistance of eureka is
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If the number of valence electrons of an atom is less than 4a then the substance is probably
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Hydrogen is an example of a _____ material.
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The K shell or the first shell has how many permissible number of orbiting electrons?
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A magnetic pole produces 5000 field lines. How much is the flux in webers? A. 50 × 10^-6
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Electric field intensity at a point is numerically equal to ________ at that point.
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Ohm's law cannot be applied to which material?
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The uncharged particles which have no effect on its atomic charge.
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A t/m is a unit of
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Why is it that the magnitude of magnetomotive force required for air gap is much greater than that required for iron part of a magnetic circuit?
B. Because air has the highest relative permeability
C. Because air is a conductor of magnetic flux
D. Because air has the lowest relative permeability
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Permeance is analogous to
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The total number of magnetic lines of force in a magnetic field is called
C. Magnetic flux intensity
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A magnetic flux of 2.5 x10^4 Wb through an area of 5 x10^4 square meters results in
B. 0.5 Tesia of flux density
D. 5000 Tesia of flux density
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If the value of 0 a conductor is 1/234 per oCa then the value of 18is