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Q. Consider a pair of coupled coils as shown in Figure of the text, with currents, voltages, and polarity dots as indicated. Show that the mutualinductance is L12 = L21 = M by following these steps:
(a) Starting at time t0 with i1(t0) = i2(t0) = 0, maintain i2 = 0 and increase i1 until, at time t1,i1(t1) = I1 and i2(t1) = 0. Determine the energy accumulated during this time.Now maintaining i1 = I1, increase i2 until at time t2,i2(t2) = I2. Find the corresponding energy accumulated and the total energy stored at time t2.
(b) Repeat the process in the reverse order, allowing the currents to reach their final values. Compare the expressions obtained for the total energy stored and obtain the desired result.
(a) Show Diode as a half wave rectifier. Determine efficiency and Ripple factor of the half wave rectifier. (b) Write short note on LED. Briefly explain : (i) Positive cli
Q. Assumption of capital asset pricing models? 1) Investor; s objective is to maximize the utility of terminal wealth: investor aims at maximizing the utility of hi9s wealth r
Q. The radiation pattern of a half-wave dipole antenna is given by (a) Sketch the radiation pattern in the principal plane of xz containing angle θ. (b) Determine the beam wi
The dielectric constant of air is practically taken as (A) more than unity. (B) Unity. (C) less than unity. (D) Zero.
Q. The self-inductances of two coupled coils are L 11 and L 22 , and the mutual inductance between them is M. Show that the effective inductance of the two coils in series is give
Q. Referring to Figure, let V BN = V RN = 120 V rms magnitude, and V BR = 240 V rms magnitude. Write down expressions for v BN (t), v RN (t), and v BR (t), and sketch them as a
AC Link Chopper This copper has two stage conversion. First DC is converted into AC by the use of inverter. The magnitude of AC voltage is varied by the transformer and
different types of probe
how can we increase insulation resistance of sheet
A preliminary design with ideal resistors, inductors and capacitors, will get 25 marks. If the design does not meet the specifications then one mark will be deducted following the
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