If the characteristic impedance of 1 meter long coaxial cable is 75 $2, if the length is 1.5 meters, then the characteristic impedance is (a) 75x1.5 (c) 75+1.5 (e) 75 (b) 75x√1.5 (d) 75+√1.5 None of the above
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- Given the complex numbers A1=630 and A2=4+j5, (a) convert A1 to rectangular form: (b) convert A2 to polar and exponential form: (c) calculate A3=(A1+A2), giving your answer in polar form: (d) calculate A4=A1A2, giving your answer in rectangular form: (e) calculate A5=A1/(A2*) giving your answer in exponential form.In the figure: R1 = 1439.170, R2 = R1 and R3 =2R2, then determine the value of the voltage source E. a 8 mA 10 mA 2 mA RT R1 R2 R3 O 25.33 11.51 O 17.27 15.43 13.82 +Which of the following is true about all series ac circuits?(a) The voltage across any circuit element is a maximumwhen the current is a maximum in that circuit element.(b) The current at any point in the circuit is always thesame as the current at any other point in the circuit.(c) The current in the circuit is a maximum when thesource ac voltage is a maximum.(d) Resistors, capacitors, and inductors can all change thephase of the current.
- Exeras: 1. Be rebistance of a sm length of oire is cön sr. Detia) the resitance of an8m longth of the same wire, b) the ength of the seme wine when the res tfonce is 4W s. 2. A Piece f re of crss-cfisndd area 2 muy go0 sr. Finid the rebutance of a wie of the some length and maferial if the crss secfional area s SMm. b). the crosss so area of the wire of the some length ond maeriol of resisfance soD2 3. A oril cons o turns of oopperwirehaving a cm-seton area of 0.8 mmn, The maan Lengtb perfurn is s0 čm anithe nosiãfivity of Cu s 0.02 um. Finh the resistonca of the coil ond pwer absorbed 4. An aluminum wire 7.5m. Lang is consacfed parallel writha copper 201ire de m larg. uhen a curent of rdix passd throngh the Cmibination, iř in fannl tht the curent the aluminung wire ik 3Aup The diamefer of the alumsinum wire is 1,0 mm. Defermane the diamefer of the copper wire. has rebi tance of by the cril when camecfed acm8 110V&c supply?1. What impedance vector 0 – j22 represents:A. A pure resistance.B. A pure inductance.C. A pure capacitance.D. An inductance combined with a resistance.QUESTION 3 An inductor, a capacitor, and a resistor are connected in parallel with a function generator. The inductor draws 100mA RMS, the capacitor draws 150mA RMS, and the resistor draws 200mA RMS. Find the magnitude of the total current. O 450mA RMS O 544mA RMS O 352mA RMS O 206mA RMS
- If A = 20260° and B= 5230°, find the products AB and BB".Power factor 90 to 100% 88 to <90% 85 to <88% 80 to <85% 75 to < 80% 70 to < 75% 65 to < 70% 60 to <65% 55 to <60% 50 to <55% Less than 50% Surcharge None 2% 4% 9% 16% 24% 34% 44% 57% 72% 80% Use the table given for the following. A house with inductive loads has an avg consumption of 40kW and 26kVAR is supplied 230 Vrms source. We want to make the surcharge 0% by adding a capacitor. a. What is the smallest kVar of the capacitor that would reduce the surcharge to 0%?A utility company plans to connect a total of 20uF of capacitance to a 7200 volt line. To make this connection four capacitors will be connected in series. What is the capacitance of each capacitor? Answer is 80uF. Now what is the minimum AC voltage rating of each capacitor?