Prob. 8: The current through the secondary of the 2.2 MVA 11/3.6 kV, Z = (1+j6.2)% transformer is given in the following table. 1 7 11 13 I,% 100 25 10 9 The feeder impedance is given as (1+j5)%. Total 1.0 MVAR is required from the capacitors at the fundamental frequency. Design the suitable second order tuned and damped filters by distributing the reactive power rating in proportion to the percentage harmonic current among the filters. Obtain the current divider and system/filter impedance transfer function plot.

Prob. 8: The current through the secondary of the 2.2 MVA 11/3.6 kV, Z = (1+j6.2)% transformer is given in the following table. 1 7 11 13 I,% 100 25 10 9 The feeder impedance is given as (1+j5)%. Total 1.0 MVAR is required from the capacitors at the fundamental frequency. Design the suitable second order tuned and damped filters by distributing the reactive power rating in proportion to the percentage harmonic current among the filters. Obtain the current divider and system/filter impedance transfer function plot.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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1. An impedance coil takes 144 watts at a lagging power factor of 0.6. What value of capacitanceand resistance should be connected in series with the coil if the power input to the latter is toremain unchanged and the overall power factor is to be unity (in resonance)? The circuit isenergized by a 120 volt, 60 cps source.2. A series RLC circuit has a Q of 75 and a pass band between half-power frequencies of 160 cps.Calculate the frequency of resonance and upper and lower frequencies of the pass band.3. An impedance coil having a resistance of 30 ohms and a 50 cps inductive reactance of 33.3 ohmsis connected to a 125 volt 60 cps source. A series circuit consisting of a 20 ohm resistor and avariable capacitor is then connected in parallel with the coil. (a) for what values of capacitancewill the circuit be in resonance? (b) calculate the two values of line current for the condition ofresonance.4. A parallel-series filter like that of Fig. 13.10b in the scanned copy of the on page 364 is…
Using Thevenin and Norton Theorem, calculate the theoretical values of RTH, RN, Voc, and Isc
In the circuit in the figure, Vcc = 18 V, Rs1 = 0.9 kΩ, Rs2 = 0.5 kΩ, R1 = 75 kΩ, R2 = 15 kΩ, RC = 2.2 kΩ, RE = 1 kΩ and β =120. It is also known that Cwi = 6 pF, Cwo = 10 pF, Cbc = Cu = 7 pF, Cbe = Cπ = 46 pF and Cce = 11 pF. Accordingly, considering the frequency response of the circuit, what would be the high cutoff frequency (fH)? NOTE-1: The output impedance of the transistor is r0 = 20 kΩ and will be taken into account in the calculations. NOTE-2: The high frequency dependence of hfe, β, will not be taken into account.
HIGH VOLTAGE(Can you explain in detail? Thank you) Q1 : A 100 kVA, 50 Hz, 230/50 kV testing transformer has an 10% leakage reactance and a 2% winding resistance. A cable of capacitance 100 nF is to be tested at 300 kV using this transformer as part of the resonance circuit. Determine the value of the inductance (with a Q-factor of 20) required to obtain resonance and the value of the input voltage required to obtain the required voltage.
In the circuit in the figure, Vcc = 18 V, Rs1 = 0.9 kΩ, Rs2 = 0.5 kΩ, R1 = 75 kΩ, R2 = 15 kΩ, RC = 2.2 kΩ, RE = 1 kΩ and β =120. It is also known that Cwi = 6 pF, Cwo = 10 pF, Cbc = Cu = 7 pF, Cbe = Cπ = 48 pF and Cce = 11 pF. Accordingly, considering the frequency response of the circuit, what would be the high cutoff frequency (fH)? NOTE-1: The output impedance of the transistor is r0 = 20 kΩ and will be taken into account in the calculations. NOTE-2: The high frequency dependence of hfe, β, will be taken into account. a. 719,95 kHz b. 143,99 kHz c. 48,00 kHz d. 191,99 kHz e. 575,96 kHz f. 479,97 kHz g. 335,98 kHz h. 623,96 kHz
An impedance coil takes 144 watts at a lagging power factor of 0.6. What value of capacitanceand resistance should be connected in series with the coil if the power input to the latter is toremain unchanged and the overall power factor is to be unity (in resonance)? The circuit isenergized by a 120 volt, 60 cps source.
In the circuit in the figure, Vcc= 18 V, Rs1 = 0.9 kohm, Rohm = 0.5 kQ, R1 = 75 kohm, R2 = 15 kohm, RC = 2.2 kohm, RE = 1 kohm and B = 120. It is also known that Cwi = 6 pF, Cwo = 10 pF, Cbc = Cu = 7 pF, Cbe = C = 44 pF and Cce = 11 PF. Accordingly, considering the frequency response of the circuit, what would the high cutoff frequency (fH) be? NOTE-1: The output impedance of the transistor is ro = 20 k and will be taken into account in the calculations. NOTE-2: high frequency dependence of hfe, B. will be taken into account.
A series RLC Circuit, shown in the Figure, is energized by a 100 V/4 kHz AC supply.The capacitance of the circuit is adjusted until resonance occurs, producing a qualityfactor of 50. Given that the impedance at the half-power points is 70.71 ohms, determine a. the power dissipated at resonance b. the inductance at resonance c. the lower -3dB frequency and the magnitude of the current at the upper -3dB frequency
A series L–R–C circuit has a supply input of 5 volts. Given that inductance, L = 5 mH, resistance, R = 75ohm and capacitance, C = 0.2µF, determine (a) the resonant frequency, (b) the value of voltage across the capacitor at the resonant frequency, (c) the frequency at which the p.d. across the capacitance is a maximum and (d) the value of the maximum voltage across the capacitor. A capacitor having a Q-factor of 250 is con nected in series with a coil which has a Q-factor of 80. Calculate the overall Q-factor of the circuit.
1. An impedance coil takes 144 watts at a lagging power factor of 0.6. What value of capacitance and resistance should be connected in series with the coil if the power input to the latter is to remain unchanged and the overall power factor is to be unity (in resonance)? The circuit is energized by a 120 volt, 60 cps source. 2. The given figure is to be designed to pass a wave having a frequency of 3500 cps and block a 2500 cps wave. The series inductor has an inductance of 0.0023 henry. Calculate the capacitance of the series capacitor and the parallel inductor.
ı just need fınal aswer In the circuit in the figure, Vcc = 18 V, Rs1 = 0.9 kΩ, Rs2 = 0.5 kΩ, R1 = 75 kΩ, R2 = 15 kΩ, RC = 2.2 kΩ, RE = 1 kΩ and β =120. It is also known that Cwi = 6 pF, Cwo = 10 pF, Cbc = Cu = 7 pF, Cbe = Cπ = 58 pF and Cce = 11 pF. Accordingly, considering the frequency response of the circuit, what would be the high cutoff frequency (fH)? NOTE-1: The output impedance of the transistor is r0 = 20 kΩ and will be considered in the calculations. NOTE-2: The high frequency dependence of hfe, that is β, will be taken into account. a. 189,95 kHz b. 617,33 kHz c. 569,84 kHz d. 474,87 kHz e. 332,41 kHz f. 47,49 kHz g. 142,46 kHz h. 712,30 kHz
Which of the following method is used to find the stability of closed loop system without finding the roots of the closed loop system? a-Bode Plot b-Root Locus Method c-Nyquist Stability Criterion d-Routh Hurwitz Criterion