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Q. What is a wave analyzer? Explain any one technique of wave analyzer giving its application also. OR Write short note on HETERODYNE Wave analyzer. OR Explai
Q. Two balanced, three-phase, wye-connected loads are in parallel across a balanced three-phase supply. Load 1 draws a current of 20 A at 0.8 power factor leading, and load 2 draws
Q. Show a block diagram of a 4-bit, parallel-input shift-right register and briefly explain its operation.
Q. An FM station's modulator has a sensitivity k FM = 5π × 10 4 rad/s·V. A receiver uses a discriminator that has a gain constant of 10 -5 /π V·s/rad. Neglecting noise, determin
Q. On a per-phase basis, let v = √2 V cos ωt and i = √2 I cos (ωt - θ). (a) Express the instantaneous power s(t) in terms of real power P and reactive power Q. (b) Now consid
Q. Frequency-controlled induction-motor drives ? The converters employed for variable-frequency drives can be classified as: • Voltage-source inverter (which is the only one
Q. Consider an RC parallel circuit excited by (a) i(t) = 20e -2t A, and (b) i(t) = 20 A. Find the forced component of the current through the capacitor for R = 2 and C = 2F.
Explain superconductivity and explain the effect of magnetic field on superconductors. Various metals become superconducting below a temperature that is the characteristic of t
Explain Ferrimagnetic magnetic materials. Ferrimagnetic Materials: In such materials unequal magnetic dipoles are lined up anti-parallel to each other. And permeabilities are
Q. The energy stored in a 2-µH inductor is given by wL(t) = 9e-2t µJ for t ≥ 0. Find the inductor current and voltage at t = 1 s.
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