An RLC circuit of 20 ohms resistor, 10 µF capacitor and 5 mH inductor connected toa sinusoidal AC supply of adjustable frequency of default value 2 kHz, at resonance.a) The magnitude of the circuit impedance is 73.561 ohms| b) The circuit impedance is of a capacitive nature1C) The gupply frequency is 4.4721 kHzO d) The magnitude of the circuit impedance is 20 ohms

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Answered: An RLC circuit of 20 ohms resistor, 10…

An RLC circuit of 20 ohms resistor, 10 µF capacitor and 5 mH inductor connected to a sinusoidal AC supply of adjustable frequency of default value 2 kHz, at resonance.

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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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.
R= 300 ohm, L= 40 mH, C= 600nF, V(AC)=5 Volt, F= 100 Hz Calculate theoretically the voltages XL (Inductance = Resistance of the coil), XC (Capacitance = resistance of the capacitor), Z (Impedance = Equivalent resistance of the circuit), VL, VC, VLC and the current value I (mA). Also explain the relationship of XL and XC with frequency in two words. Write the relation that gives the resonant 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.
An impedance coil whose resistance and inductance are 18 ohms and 3.82 mH,respectively, is connected in parallel with a series combination of a 5.3 uF capacitorand a variable resistor. For what value of resistance will the circuit be in resonance at1000 cps?
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.
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.
A coil of inductance 200µH and resistance 50.27ohms and a variable capacitor are connected in series to a 5 mV supply of frequency 2MHz. Determine (a) the value of capacitance to tune the circuit to resonance, (b) the supply current at resonance, (c) the p.d. across the capacitor at resonance,the bandwidth, and the half-power frequencies Answers: C= 31.66 pF,I= 99.46 µA,P.D= 250 mV, bandwidth=40 kHz, and half power frequency= 2.02 MHz, 1.98 MHz
The following information is given for the two – branch parallel circuit as shown in the figure in which it is assumed that RC is negligibly small or zero: RL = 8 ohms, XL (at 400 cps) = 7.53 ohms, XC (at 400 cps)= 19.9 ohms, V = 30 volts. Calculate (a) the resonant frequency of the circuit, (b) the line current, (c) the inductor and capacitor branch currents.
In the circuit in the figure, Vcc= 18 V, Rs1 = 0.9 k2, Rs2 = 0.5 kQ, R1 = 75 kQ, R2 = 15 kQ, RC = 2.2 kQ, RE = 1 k 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 superheterodyne receiver is to tune the range 88.1MHz to 107.1MHz. The RF circuit inductance is 1μH. Low-side injection is used.a. Calculate the minimum capacitance of the variable capacitor in the RF circuitb. Calculate the RF circuit capacitance tuning ratio c. If the receiver has a single converter stage and IF of 800kHz, calculate the capacitance tuning ratio of the local oscillator d. If the maximum capacitance of the variable capacitor of the local oscillator is 0.2pF, calculate the minimum capacitance e. If the receiver has a single converter stage and IF of 800kHz, calculate the image frequency of 103.7MHzf. Calculate the IFRR (in dB) of (e) if Q of the preselector is 50 g. To increase the IFRR of (e) to 40dB, double conversion is used. What must be the frequency of the 1st IF?