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Q. Figure can also be considered as a simple model of a magnetically operated relay that is commonly used for the automatic control and protection of electric equipment. Consider the core and armature (shown as "Bar" in Figure of the relay to be constructed out of infinitely permeable magnetic material. The core has a circular cross section and is 1.25 cm in diameter, while the armature has a rectangular cross section. The armature is so supported that the two air gaps are always equal and of uniform length over their areas. A spring (not shown in the figure), whose force opposes the magnetic pull, restrains the motion of the armature. If the operating coil has 1800 turns carrying a current of 1 A, and the gaps are set at 0.125 cmeach, find the pull that must be exerted by the spring. You may neglect leakage and fringing.
Energy Gap Differentiating feature between the metals, insulators, and semiconductors. Ascertains the absorption or emission spectra, the leakage current, and the intrin
In practice, it is usually better to wind the field coils on the rotor and supply the field current to them via slip rings. As the rotor turns, the changing magnetic field expe
Q. "Developing countries could delay opening the capital account until the domestic financial system is strong enough to withstand the sometimes flow of world capital and violen
The advantage of the analog storage oscilloscope is that it has higher bandwidth and writing speed than a digital oscilloscope, being capable of operating speeds of about 15 GHz. T
Consider the open rotation of a diatomic molecule consisting of two atoms of mass and respectively divided by a distance presume that the molecule is rigid with center of mass fixe
Q. Determine the equivalent capacitance at terminals A-B for the circuit configurations shown in Figure.
a. Discuss the benefits and limitations of utilizing wind energy for electricity generation. b. Draw the block diagram representation of a thermal power generation unit. Illustr
Customer Indexing Scheme: Customer indexing has to be carried out in a way, that makes it probable to associate the customer's geographical and electrical address along with h
what is the use of capacitors in amplifiers
barrier voltage at pn junction
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