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Q. Explain Current-to-Current Amplifier ?
The circuit given in Figure is to amplify a current fed to the input of the op amp. Applying KCL at Y,
i1 + iS = io
Since i1 = - vY /R1, Equation becomes
iS - vYR1 = io
Because X is a virtual ground, vY =-iSRf . Hence Equation becomes
The current gain is then given by
Explain Hysteresis loop. Hysteresis loop: In a ferromagnetic material, the flux density B raises while external applied magnetic field H to it is raised. When the saturation
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A three-phase, 34.5-kV, 60-Hz, 40-km transmission line has a per-phase series impedance of 0.2+j0.5/km. The load at the receiving end absorbs 10 MVA at 33 kV. Calculate the follow
The observations from these experiments led to 'The Laws of Electromagnetic Induction' 1) 'If the magnetic flux threading through an electrical circuit changes, then an e.m.f.
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Frequency variation in simple transmitters can be reduced by adding a _______ stage.
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