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physics
electricity and magnetism

Questions and Answers of Electricity and Magnetism

Find the y parameters of the two-port in Fig. 19.80 in terms of s.
Find the impedance parameter equivalent of the network in Fig. 19.66.An asterisk indicates a challenging problem
Find the y parameters for the circuit in Fig. 19.81.
Obtain the admittance parameter equivalent circuit of the two-port in Fig. 19.82.
Obtain the y parameters of the two-port network in Fig. 19.83.
(a) Find the y parameters of the two-port in Fig. 19.84.(b) Determine V2 (s) for Vs = 2u(t) V.
Find the resistive circuit that represents these y parameters:
Draw the two-port network that has the following y parameters:
Calculate [y] for the two-port in Fig. 19.85.
Find the y parameters for the circuit in Fig. 19.86.
In the circuit of Fig. 19.65, the input port is connected to a 1-A dc current source. Calculate the power dissipated by the 2 - Ω resistor by using the y parameters. Confirm your result by direct
In the bridge circuit of Fig. 19.87, I1 = 10 A and I2 = ˆ’ 4A(a) Find V1 and V2 using y parameters.(b) -Confirm the results in part (a) by direct circuit analysis.
Find the z parameters of the circuit in Fig. 19.67.
Find the h parameters for the networks in Fig. 19.88.
Determine the hybrid parameters for the network in Fig. 19.89.
Find the h and g parameters of the two-port network in Fig. 19.90 as functions of s.
Obtain the h parameters for the two-port of Fig. 19.91.
Obtain the h and g parameters of the two-port in Fig. 19.92.
Determine the h parameters for the network in Fig. 19.93.
For the two-port in Fig. 19.94,Find:(a) V2 /V1 (b) I2 / I1(c) I1 /V1 (d) V2 /I1
The input port of the circuit in Fig. 19.79 is connected to a 10-V dc voltage source while the output port is terminated by a 5 - Ω resistor. Find the voltage across the 5 - Ω resistor by using h
The h parameters of the two-port of Fig. 19.95 are:Given the = Zs = kÎ© and = ZL = 400Î©, find Z in and Z out
Obtain the g parameters for the wye circuit of Fig. 19.96.
Calculate the z parameters for the circuit in Fig. 19.68.
Find the g parameters for the circuit in Fig. 19.97.
For the two-port in Fig. 19.75, show thatWhere g Î” is the determinant of [g] matrix.
The h parameters of a two-port device are given by H11 = 600Ω , H12 = 10−3 , h21 120 = , h 22 = 2×10−6 S Draw a circuit model of the device including the value of each element.
Find the transmission parameters for the single-element two-port networks in Fig. 19.98.
Determine the transmission parameters of the circuit in Fig. 19.99.
Find the ABCD parameters for the circuit in Fig. 19.100.
Find the transmission parameters for the circuit in Fig. 19.101.
Obtain the ABCD parameters for the network in Fig. 19.102.
For a two-port, let A = 4, B = 30 Ω, C = 0.1 S, and D = 1.5. Calculate the input impedance, Z11 = V1 / I1 in when: (a) The output terminals are short-circuited, (b) The output port is
Using impedances in the s domain, obtain the transmission parameters for the circuit in Fig. 19.103
Obtain the z parameters for the network in Fig. 19.69 as functions of s.
Derive the s-domain expression for the t parameters of the circuit in Fig. 19.104.
Obtain the t parameters for the network in Fig. 19.105
(a) For the T network in Fig. 19.106, show that the h parameters are:(b) For the same network, show that the transmission parameters are:
Through derivation, express the z parameters in terms of the ABCD parameters.
Show that the transmission parameters of a two-port may be obtained from the y parameters as:
Prove that the g parameters can be obtained from the z parameters as
For the network of Fig. 19.107, obtain Vo/Vs.
Given the transmission parametersObtain the other five two-port parameters.
A two-port is described by V1 = I1 + 2V2, I2 = -2I1 + 0.4V2 Find: (a) the y parameters, (b) the transmission parameters
Given thatDetermine:(a) [z](b) [y](c) [h](d) [T]
Compute the z parameters of the circuit in Fig. 19.70.
Design a T network necessary to realize the following z parameters at Ï‰ = 106 rad/s
For the bridge circuit in Fig. 19.108, obtain:(a) The z parameters(b) The h parameters(c) The transmission parameters
Find the z parameters of the op amp circuit in Fig. 19.109. Obtain the transmission parameters.
Determine the z parameters of the two-port in Fig. 19.110.
Determine the y parameters at Ï‰ = 1,000 rad/s for the op amp circuit in Fig. 19.111. Find the corresponding h parameters.
What is the y parameter presentation of the circuit in Fig. 19.112?
In the two-port of Fig. 19.113, let y12 = y21 = 0, y11 = 2 mS, and y22 = 10 mS. Find Vo /Vs
If three copies of the circuit in Fig. 19.114 are connected in parallel, find the overall transmission parameters.
Obtain the h parameters for the network in Fig. 19.115.
The circuit in Fig. 19.116 may be regarded as two two-ports connected in parallel.Obtain the y parameters as functions of s.An asterisk indicates a challenging problem.
Calculate the impedance-parameter equivalent of the circuit in Fig. 19.71.
For the parallel-series connection of the two two-ports in Fig. 19.117, find the g parameters.An asterisk indicates a challenging problem
Determine the z parameters for the network in Fig. 19.118An asterisk indicates a challenging problem
A series-parallel connection of two two-ports is shown in Fig. 19.119. Determine the z parameter representation of the networkAn asterisk indicates a challenging problem
Three copies of the circuit shown in Fig. 19.70 are connected in cascade. Determine the z parameters.
Determine the ABCD parameters of the circuit in Fig. 19.120 as functions of s. (Partition the circuit into sub-circuits and cascade them using the results of Prob. 19.43.)
For the individual two-ports shown in Fig. 19.121 where,(a) Determine the y parameters of the overall two-port.(b) Find the voltage ratio Vo /Vi when Z L = 2 Î©.An asterisk indicates a challenging
Use PSpice to obtain the z parameters of the network in Fig. 19.122.
Using PSpice, find the h parameters of the network in Fig. 19.123. Take Ï‰ = 1 rad/s
Obtain the h parameters at Ï‰ = 4 rad/s for the circuit in Fig. 19.124 using PSpice.
Use PSpice to determine the z parameters of the circuit in Fig. 19.125. Take Ï‰ = 2 rad/s.
Find the z parameters of the two-port in Fig. 19.72.
Use PSpice to find the z parameters of the circuit in Fig. 19.71.
Repeat Prob. 19.26 using PSpice.In Problem 26Calculate [y] for the two-port in Fig. 19.85.
Use PSpice to rework Prob. 19.31In Problem 31Determine the hybrid parameters for the network in Fig. 19.89.
Rework Prob. 19.47 using PSpice.In problem 47Obtain the ABCD parameters for the network in Fig. 19.102.
Using PSpice, find the transmission parameters for the network in Fig. 19.126.
At Ï‰ = 1 rad/s find the transmission parameters of the network in Fig. 19.127 using PSpice.
Obtain the g parameters for the network in Fig. 19.128 using PSpice
For the circuit shown in Fig. 19.129, use PSpice to obtain the t parameters. Assume Ï‰ =1 rad/s.
Using the y parameters, derive formulas for Zin, Zout, Ai, and A v for the common emitter transistor circuit
A transistor has the following parameters in a common-emitter circuit:What is the voltage amplification of the transistor? How many decibels gain is this?
The y parameters of a network are:Determine the z parameters for the network.
A transistor with h fe = 120, h ie = 2k Ω h re = 10−4, h oe = 20μ S Is used for a CE amplifier to provide an input resistance of 1.5 k Ω (a) Determine the necessary load resistance RL. (b)
For the transistor network of Fig. 19.130,h fe = 80, h ie = 1.2k Î©h re = 1.5 Ã— 10ˆ’4 , h oe = 20Î¼ SDetermine the following:(a) Voltage gain Av =
Determine Av, Ai, Zin , and Zout for the amplifier shown in Fig. 19.131. Assume thatAn asterisk indicates a challenging problem.
Calculate Av, Ai, Zin, and Zout, for the transistor network in Fig. 19.132. Assume thatAn asterisk indicates a challenging problem
A transistor in its common-emitter mode is specified byTwo such identical transistors are connected in cascade to form a two-stage amplifier used at audio frequencies. If the amplifier is terminated
Realize an LC ladder network such that
Design an LC ladder network to realize a low pass filter with transfer function
Synthesize the transfer functionUsing the LC ladder network in Fig. 19.133
A two-stage amplifier in Fig. 19.134 contains two identical stages withIf ZL = 20 k Î©, find the required value of Vs to produce Vo = 16 V.
Assume that the two circuits in Fig. 19.135 are equivalent. The parameters of the two circuits must be equal. Using this factor and the z parameters, derive Eqs. (9.67) and (9.68)
Gold, which has a density of 19.32 g/cm3, is the most ductile metal and can be pressed into a thin leaf or drawn out into a long fiber. (a) If a sample of gold, with a mass of 27.63 g, is pressed
On a spending spree in Malaysia, you buy an ox with a weight of 28.9 piculs in the local unit of weights: 1 picul = 100 gins, 1 gin = 16 tahils, 1 tahil = 10 chees, and 1 chee = 10 hoons. The weight
Water is poured into a container that has a small leak. The mass m of the water is given as a function of time t by m = 5.00t0.8 - 3.00t + 20.00, with t ( 0, m in grams, and t in seconds. (a) At
While driving a car at 90 km/h, how far do you move while your eyes shut for 0.50 s during a hard sneeze?
You are to drive 300 km to an interview. The interview is at 11:15 A.M. You plan to drive at 100 km/h, so you leave at 8: 00 A.M. to allow some extra time. You drive at that speed for the first 100
In 1889, at Jubbulpore, India, a tug-of-war was finally won after 2 h 41 min, with the winning team displacing the center of the rope 3.7 m. In centimeters per minute, what was the magnitude of the
From January 26, 1977, to September 18, 1983, George Meegan of Great Britain walked from Ushuaia, at the southern tip of South America, to Prudhoe Bay in Alaska, covering 30 600 km. In meters per
The wings on a stonefly do not flap, and thus the insect cannot fly. However, when the insect is on a water surface, it can sail across the surface by lifting its wings into a breeze. Suppose that
(a) If a particle's position is given by x = 4 - 12t + 3t2 (where t is in seconds and x is in meters), what is its velocity at t = 1 s?(b) Is it moving in the positive or negative direction of x just
Figure 2-15a gives the acceleration of a volunteer's head and torso during a rear-end collision. At maximum head acceleration, what is the speed of (a) the head and (b) the torso?
Vector lies in the yz plane 63.0( from the positive direction of the y axis, has a positive z component, and has magnitude 3.20 units. Vector lies in the xz plane 48.0( from the positive direction

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