Consider the network depicted in the following figure, and determine the equivalent impedance seen looking into the open terminals if w = 39 rad/s %3D 2 mF 20 N 25 2 55 0 2H Oa. 17.544 J 1.193 Q Ob. 21.544 J 5.193 2 Oc. 23.544 J 7.193 2 Od. 19.544 J 3.193 2
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- Calculate the average and the root-mean-square value of the output voltage for the network in the figure below. Assume (VDI=VD2=0.5V) 10 V D2. D1 2k2 I t 3k2 3 k2 O 2.417V, 2.687V 2.421V, 2.736V 2.536V, 2.657V 2.173V, 2.824V O 2.517V, 2.876V O 2.714V, 2.766VConsider the following circuit used to provide power for an inductive RL load. The input voltage is Vs=150V and the load has a 30 impedance value. The thyristor is working at a frequency fs = 2 kHz. The discharge current is to be limited to 50A and the required dv/dt is 50V/us. The values of Rs and Cs are equal to: Cs Ti V, Select one: O a. 30, 0.158µF b. 30, 0.352µF ос. 30, 0.64µF O d. 60, 0.5µFConsider the following circuit used to provide power for an inductive RL load. The input voltage is Vs-100V and the load has a 50 impedance value. The thyristor is working at a frequency fs = 2 kHz. The discharge current is to be limited to 40A and the required dv/dt is 40V/us. If the value of Cs is equal to 0.14uF, then the snubber losses are equal to: T1 Vs Select one: O a. 3.4W O b. 1.4W 5.4W Od. 7.4W
- A circuit is designed with an AC source of max voltage 12 and frequency 60 Hz. The circuit has a resistance of 1050 Ohms, an inductance of 0.06 Henrys, and a capacitance of 0.009 coulombs per volt. - omega for source in rad/s? - omegaR for circuit? -XL? -XC? -phi in radians? -Z? -imax?9. What will be the impedance of a LR-C circuit if it has a circuit current of 3A and a supply voltage of 120V? A. 45ohm B. 50 ohm C. 40 ohm D. 35 ohm 10. A pure inductance of 100mH is connected in parallel to a 25microfarad capacitor. The network is connected to a 200V, 60Hz supply. Determine the circuits current. A. 2A B. 3.42A C. 4A D. 10AConsider the following circuit used to provide power for an induative RL load. The input voltage is V-100V and the load has a 50 impedance value. The thyristor is working at a frequency fs = 2 kHz. The discharge current is to be limited to 40A and the required dv/dt is 40V/us. If the value of Ce is equal to 0.14uF, then the snubber losses are equal to: R. V. Select one: O a 5.4W O b. 7.4W 1.4W Od. 3.4W
- Unless given, use the: POLAR FORM for voltage and current, RECTANGULAR FORM for impedance. Consider the following circuit, supplied by a 500mARMS current source with a 30° phase shift (i.e. Isource=500230⁰ mA). R1 L1 320 mH C1 16 μF a. What is the total impedance of the circuit? b. What is the voltage drop on the 100-ohm resistor, R1? c. Is the circuit inductive, capacitive, or neither (resistive)? d. Draw the phasor diagram of the voltage and current at R1. e. What is the total power (apparent) delivered by the current source? f. Draw the phasor diagram of the voltage and current at the source. 11 sine 50 Hz 100 ellThe actual impedance of a system is 300 Ω. The base kVA is 300 kVA, and the base voltage is 11 kV. What is the actual impedance with 400 kVA and 38 kV as base values? a. 300 b. 33.52 c. 0.744 d. 0.083Obtain Zous for the following system G2 O.9225 1-25 0.25 (ALL ane tu mpedances)
- 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?Ministry of Manpower Directorate General of Technological Education Salalah College of Technology Zlectrical Inginearina Problem - 8 Refer to the circuit below and -25V C2 N. compute the following: i) Total capacitance ii) Voltage across C, iii)Charge across C, iv)Voltage across C5 5 uF C1 5 uF 5 uF C4 5 uF C6 5 uF -16-65V. C5 5 uF (Take V, as 25V) 8-35V VT 25VTwo parallel capacitors C1 and C2 are in series with two series inductors L1 and L2 and connected to an AC supply of w rad./s, then the equivalent impedance equals... a) Infinity b) Zero Ohms O) j(-1/(wC1+wC2)+wL1+L2)) d) j(-wC1 C2/(C1+C2)+wL1-L2))