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A relay is essentially an electromechanical switch that opens and closes electrical contacts. A simplified relay is represented in Figure. It is required to keep the fenomagnetic plate at a distance of 0.25 cm from the electromagnet excited by a coil of N = 5000 turns, when the torque is 10 N · m at a radius r = 10 cm. Estimate the current required, assuming infinitely permeable magnetic material and negligible fringing as well as leakage.
(a) Express the storedmagnetic energyWm as a function of the flux linkage λ and the position x.
(b) Express the coenergy W m as a function of the current i and the position x.
Q. Compare MOSFET with JFET? a. In enhancement and depletion types of MOSFET,the transverse electric field induced across an insulating layer deposited on the semiconductor ma
Drift Current and Diffusion Current : There are two mechanisms in which electrons and holes move through a semiconductor. One of these is termed as drift and other is diffusi
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Give some applications of constantan. Constantan is an alloy of nickel and copper. It is used in thermocouples, motor starters and precision resistors.
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Now you have to digitally implement this circuit. Compute a difference equation which if you implement will behave exactly like this circuit.
Q. If an antenna has an available noise power of 1.6 × 10 -15 W in a 1-MHz bandwidth, find the antenna temperature.
1. A 230/1000V 50 Hz, single phase transformer has the following test data: Open circuit test (L.V.) Primary voltage = 230V Primary current = 1.30 A Input power
Q. Sketch a typical circuit for a 2-input, 4-output decoder.
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