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What is Permeability?
Permeability: This is defined as the ability of the material to conduct flux. This is defined as the ratio of magnetic flux 'B' in a medium to the magnetic flux intensity 'H' at similar location in the medium, that is µ = B/H, here B is plotted against H, a curve is acquired, called magnetization curve or B-H curve. The permeability of any material is not a constant. This permeability at low value of H is termed as initial permeability. The common core materials as low carbon steel, silicon steel contain low initial permeability.
advantages and disadvantaages of superposition
States Ohm's law Ohm's law describes that the current I flowing in a circuit is directly proportional to the applied voltage V and inversely proportional to the resistance R, g
Armature Reaction in DC Generator: Armature reaction is the effect of magnetic flux set up by armature current upon the distribution of flux under the main poles.
Illustrate Common Emitter configuration, current amplification factor and collector amplifier. Describe transistor as an amplifier.
Q. Determine the bits required for a D/A converter to detect 1-V change when V ref = 15 V.
The rotor of a wound-rotor induction motor is rewound with twice the number of its original turns,with a cross-sectional area of the conductor in each turn of one-half the original
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Merits: The circuit has the trend to stabilize operating point against changes in temperature and β-value. Demerits: In this type of circuit, to keep I C independent o
The mathematical relationships of control systems are usually represented by block diagrams, which show the role of various components of the system and the interaction of variable
A 3-phase, wye-connected, 11.8 kV, 100 MVA turbo- generator of 0.8 power factor lagging has a synchronous reactance of 2.0 p.u. on rating. The generator is driven by a steam turbin
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