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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. A shift register can be used as a binary (a) divide- by-2, and (b) multiply-by-2 counter. Explain. Q. Show a block diagram of a 4-bit shift-right register using JKFFs.
Illustrate the satellites in outer space Satellites in outer space transmit signals to Earth. Computers in vehicles (for example car, airplane or ship) receive and interpret th
A 10-hp, 230-V, 500-r/min shunt motor, having a full-load armature current of 37 A, is started with a four-point starter. The resistance of the armature circuit, including the inte
Write explanatory notes on Paging. The memory paging mechanism located inside the 80386 and above permits any physical memory location to be allocated to any linear address. Th
what is couple circuit ?
Explain Series capacitors These are connected in series with the line conductors and are used to reduce the inductive reactance of long transmission lines and hence the voltage
Distribution Transformers 1. Augmentation/Addition of Distribution Transformers Distribution transformers have to be augmented by installing additional transformers or in
Q. (a) For a JKFFwith JK = 11, the output changes on every clock pulse. The change will be coincident with the clock pulse trailing edge and the flip-flop is said to toggle, when T
Electric field strength: When two metal plates are charged and divided in a certain distance, a potential difference will exists among the plates. A force was also generated
Hall Effect is associated with (A) Conductors. (B) Semiconductors. (C) Thermistors. (D)Solders. Ans: Hall Effect is associated with semiconductors.
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