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1. Sketch the circuit symbol for a transformer, and explain its principle of operation. Why is the core made from laminations? Is the core material a ‘ hard ' or a ‘ soft ' magnetic material? Give the reason for this.
2. A transformer with a turns ratio of 20:1 has 240 V applied to its primary. Calculate the secondary voltage.
Consider the frequency-selective channel with CSI only at the receiver with L i.i.d. Rayleigh faded paths. Compute the capacity of the fast fading channel. Give approximate expressions at the high and low SNR regimes.
What is the resistance of an annealed copper wire that has a length of 500m and a diameter of 0.5 mm. How a diameter two times smaller affects the resistance.
Triangular Wave Design There is a need to generate a 12-V ± 10%, 1-kHz triangular wave.- Design the circuit and verify your design using Multisim.
a) Design a minimum two-level NOR-gate network to realize the above function. b) Design a minimum three-level NOR-gate network to realize the above function.
The first one is about Photorefractive Materials, and the second is is about Waveguide Modulator.
Consider the current it takes to power a + 5 V 74xx245 (ICC) as shown in Table 1.5. What is the qualitative difference between the CMOS devices and the non-CMOS devices? What is the explanation for the difference?
If 100 meters of silver wire 2 mm in diameter required 8.1 watts when carrying 4 amps of current, calculate for silver the (a) resistivity, (b) mobility, (c) collision time, (d) mean free path, (e) Hall coefficient, and (f) the Hall field in a tra..
A charge of +10.7 micro-Coulombs is placed at the origin of a coordinate system. Another charge of -12.6 micro-Coulombs is placed at x = +0.19 m, y = +0.1 m. A third charge of +13.2 micro-Coulombs is placed at x = -0.19 m, y = 0 m.
the SABER instrument aboard the TIMED satellite orbits the earth in a sun-synchronous polar orbit 625 Km above the earth. each of the 10 SABER focal plan detectors is 0.14mm high by 2.0mm wide. the focal plane array is 4.882*4.882mm in size
What is the frequency response analysis. Which two parameters are used to determine frequency response. Draw Bode Plot for G(jw) = 10 (jw + 3) / [(jw)(jw + 2)]
The speed of a 10HP, 230V, 1200 rpm separately excited DC motor is controlled by a 1-phase full-wave bridge converter. The rated armature current of the motor is 10 A. The armature resistance is 0.25 Ohm and the armature inductance is 10 mH.
Cost have been compiled for a certain manufacturing company for the most recent year.T he summary is shown in the table below. The company operates two different manufacturing plants plus a corporate headquarters.
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