
Concept explainers
For the ideal transformer circuit of Fig. 13.122 below, find:
- (a) I1 and I2,
- (b) V1, V2, and Vo,
- (c) the complex power supplied by the source.
(a)

Calculate the currents
Answer to Problem 57P
The value of currents
Explanation of Solution
Given data:
Refer to Figure 13.122 in the textbook for the transformer circuit.
The value of n from the given figure is 2.
Calculation:
From Figure 13.122, calculate the load impedance
In Figure 13.122, reflect the load of
Substitute 2 for
Consider the expression for the impedance
Substitute
From Figure 1, write the expression for the current
Substitute
Write the expression for the current
Substitute
Conclusion:
Thus, the value of currents
(b)

Calculate the voltages
Answer to Problem 57P
The value of voltages
Explanation of Solution
Calculation:
Apply Kirchhoff's voltage law to the primary loop contains current
Substitute
Write the expression for the voltage
Substitute 2 for n and
Write the expression for the output voltage
Substitute
Conclusion:
Thus, The value of voltages
(c)

Calculate the complex power supplied by the source.
Answer to Problem 57P
The complex power supplied by the source is
Explanation of Solution
Calculation:
The conjugate of the current
Write the expression for the complex power supplied by the source.
Write the Matlab code to find the required complex power.
V=i*60;
I1_C=8.8753-i*24.3318;
S=V*I1_C
The output of the Matlab code is given as follows.
S = 1459.91 + 532.52i
From the Matlab output, the complex power is,
Conclusion:
Thus, the complex power supplied by the source is
Want to see more full solutions like this?
Chapter 13 Solutions
EBK FUNDAMENTALS OF ELECTRIC CIRCUITS
- 4z Find the residue of f(z) = (z-3)(z+1)²arrow_forwardwhat is the integral of f(z): -3z+4 = around the circle z(z-1)(z-2) |z|=3/2?arrow_forward1. The communication channel bandwidth uses is 25 MHz centered at 1GHz and uses BPSK. The noise power spectral density of the channel is 10^-9 W/Hz. The channel loss between the transmitter and receiver is 25dB. The application requires a BER of less than 10^-4. Determine the minimum transmit power required.arrow_forward
- 4. A differential BPSK transmitter consumes 10 W and provides a BER of 1*10^-7. If the system moves to 16-QAM, what is new minimum transmit power?arrow_forward5. The noise power (in watts) measured in a 40MHz Wifi channel is 230*10^-6 Watts. The access point (AP) output power is 600 mW and only uses 256QAM and has a data rate of 400Mbps. The channel losses can be modeled as 0.4dB/meter. An application on your phone requires a BER of < than 1*10^-4. A) What is the maximum distance between the AP and your phone? b) if the AP and my phone could switch to 64QAM and support the same data rate, what is the new maximum distance between the AP and my phone?arrow_forward3. You are to design a 9-volt battery operated communication system that has a center frequency of 2.4 GHz. It must last 10 years without replacing batteries. The application requires a BER of <10^-5 and a data rate of 500bps. The channel can be modeled as AWGN with a noise power spectral density of 10^- 8 W/Hz. (a) What modulation scheme would you use? B) what is the required capacity of the batteries? and (c) Is the battery commercially available?arrow_forward
- Refer to the logic diagram of Figure. Gate 1 and gate 4 belong to the standard TTL family, while gate 2 and gate 3 belong to the Schottky TTL family and the low-power Schottky TTL family respectively. Determine whether the fan-out capability of gate 1 is being exceeded. Relevant data for the three logic families are given in Table 3(a).arrow_forward2. An existing system uses noncoherent BASK. The application requires a BER of <10^-5. The current transmit power is 25 Watts. If the system changes to a coherent BPSK modulation scheme, what is the new transmit power required to deliver the same BER?arrow_forwardfunctions: where are the Cauchy-Riemann equations satisfied by the 1- w = z² - 4 2- w = 7 Z Z+5 3- w = Z-2 z+1arrow_forward
- Find the integral for ezz Cz-i ezz Zdz and $c (z-i)³ dzarrow_forwardDetermine the voltage across A and B in the circuit given below:arrow_forwardAn inductive coil having negligible resistance and 0.1H inductance is connected a supply of 220V, 50 Hz. Calculate (a) Inductive reactance, (b) RMS value of Current, (c) Power consumed, (d) Power factor, (e) Write down the equations for voltage and current.arrow_forward
- Introductory Circuit Analysis (13th Edition)Electrical EngineeringISBN:9780133923605Author:Robert L. BoylestadPublisher:PEARSONDelmar's Standard Textbook Of ElectricityElectrical EngineeringISBN:9781337900348Author:Stephen L. HermanPublisher:Cengage LearningProgrammable Logic ControllersElectrical EngineeringISBN:9780073373843Author:Frank D. PetruzellaPublisher:McGraw-Hill Education
- Fundamentals of Electric CircuitsElectrical EngineeringISBN:9780078028229Author:Charles K Alexander, Matthew SadikuPublisher:McGraw-Hill EducationElectric Circuits. (11th Edition)Electrical EngineeringISBN:9780134746968Author:James W. Nilsson, Susan RiedelPublisher:PEARSONEngineering ElectromagneticsElectrical EngineeringISBN:9780078028151Author:Hayt, William H. (william Hart), Jr, BUCK, John A.Publisher:Mcgraw-hill Education,





