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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 mutual inductance 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 ?nal values. Compare the expressions obtained for the total energy stored and obtain the desired result.
Q. Describe the time division switching? Ans: Space and Time Switching: Space Switches: Connections can be made between outgoing and incoming PCM highways by means of
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Q. Give a brief description of integrating circuits ? Integration is a summation of area. An integrating circuit produces an output voltage which is proportional to the area en
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Q. Consider the circuit shown in Figure. (a) Given v(t) = 10e -t V, find the current source is(t) needed. (b) Given i(t) = 10e -t A, find the voltage source v (t) needed.
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Q. Consider the balanced three-phase alternating currents, shown in Figure, to be flowing in phases a, b, and c, respectively, of the two pole stator structure shown in Figure with
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Addressing Model As we have learned already that each instruction has two parts one is op code and another is operand. Op code specified the type of operations to be
Q. Electronic Photo Flash? A simplified schematic diagram of the electric circuit of an electronic photo flash typically used on cameras is shown in Figure 7.7.1. By passing a
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