Q1: For the symmetric directional coupler shown below, if the directivity is infinite and the forward attenuation is C=20 dB, find the transmitted power from the source (Pt)and ( p x). 171 1 mW B2 Pt P 9 mW B1 200 mW C=20 dB Px ΖΙ

A 220 Ω resistor is in series with an 80 mH inductor. The AC source is 48  at 1 kHz. The power factor is ________.                                                                                                      Hint: Draw the circuit and get Vs and Is

Part a,b,c

4) Therenin's Equinlena Circuit and Marimum Poer truns fer Thiorem a) For the Circuit derive the given in the figure, therenin's eq uivalence Circuit acrass the branch witn the loud impedanu. b) Culculate to deliver the volue of the load Impedanca makimum power to the load, c) caleula te the Power dissipa ted through the loud, 72

Conductor spacings, types, and sizes do have an impact on the series impedance and shunt admittance? True or false? And why?

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When a resistor is connected across the terminals of an ac generator (117 V) that has a fixed frequency, there is a current of 0.332 A in the resistor. When an inductor is connected across the terminals of the same generator, there is a current of 0.365 A in the inductor. When both the resistor and the inductor are connected in series between the terminals of this generator, what is (a) the impedance of the series combination and (b) the phase angle between the current and the voltage of the generator? Note: The ac current and voltage are rms values and power is an average value unless indicated otherwise. (a) Number (b) Number Buda i Vrms R Irms.R Circuit 1 Units Units Vrms. Irms, L Circuit 2 > L Vrms R www Circuit 3

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8.) Write a logical statement representing each circuit. Simplify the statement as much as possible, and draw the simplified circuit.

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