please help me with those questions, those are from Communication Engineering, Electrical and electronics engineering. 1. For an AM communication the modulating signal is given asm(t) = 5 cos(2n500t) + 10 cos(27l1000t) + 20 cos(2a1500t) and the carriersignal is given as c(t) = 50 cos(2n10°t). Calculate:(i) Upper Side band power(ii) Lower Side band power(iii) Total power delivered to the load of 10002(iv) Transmission efficiency

Find the upperside power, Lower sideband power , Total power delivered to the load of 1000 ohm,…

1. For an AM communication the modulating signal is given as m(t) = 5 cos(2n500t) + 10 cos(2nl1000t) + 20 cos(2a1500t) and the carrier signal is given as c(t) = 50 cos(2n10°t). Calculate: (i) Upper Side band power (ii) Lower Side band power (iii) Total power delivered to the load of 10002 (iv) Transmission efficiency

1. For an AM communication the modulating signal is given as m(t) = 5 cos(2n500t) + 10 cos(2nl1000t) + 20 cos(2a1500t) and the carrier signal is given as c(t) = 50 cos(2n10°t). Calculate: (i) Upper Side band power (ii) Lower Side band power (iii) Total power delivered to the load of 10002 (iv) Transmission efficiency

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...

See similar textbooks

Similar questions

A schematic design of a full-wave bridge type power supply is given below. Provide the appropriate values for the inductors, diodes, capacitor and resistors, such that the output DC voltage is 6.2 V and the max. output power for the load resistance is 20 mW (percentage error for output voltage and output power is 2%). AC voltage source: Amplitude=311.13, Freq=60, DC offset= 0. For the rectifier part, choose diodes with an appropriate PIV rating. Show all the formulas and computations involved in acquiring the values for the inductors, diodes, capacitor and resistors. In choosing your Zener diode, consider the output voltage and the output current. Note that the output current should be the minimum Zener current. For the value of the series resistor RS, choose a lower value for less ripple but always consider the required output voltage. The ripple voltage peak-to-peak value should be less than or equal to 1% of the required output voltage. Use the formula below for choosing the value…
A schematic design of a full-wave bridge type power supply is given below. Provide the appropriate values for the inductors, diodes, capacitor and resistors, such that the output DC voltage is 7.5 V and the max. output power for the load resistance is 20 mW (percentage error for output voltage and output power is 2%). AC voltage source: Amplitude=311.13, Freq=60, DC offset= 0. For the rectifier part, choose diodes with an appropriate PIV rating. Show all the formulas and computations involved in acquiring the values for the inductors, diodes, capacitor and resistors. • In choosing your Zener diode, consider the output voltage and the output current. Note that the output current should be the minimum Zener current. • For the value of the series resistor RS, choose a lower value for less ripple but always consider the required output voltage. •The ripple voltage peak-to-peak value should be less than or equal to 1% of the required output voltage. Use the formula below for choosing the…
Q/1/A single-phase, half-wave, controlled has a source 220V at 50 HZ and is feeding a load R-2002 and L=25 mH, the firing angle a-60° and the current extinction angle B=225° (i)Determine the average load voltage and current. (ii) Determine the rms load voltage and current. a
Facts A clipper is a device that removes either the positive half (top half) or negative half (bottom half), or both positive and negative halves of the input AC signal. In other words, a clipper is a device that limits the positive amplitude or negative amplitude or both positive and negative amplitudes of the input AC signal. In some cases, a clipper removes a small portion of the positive half cycle or negative half cycle or both positive and negative half cycles. In the below circuit diagram, the positive half cycles are removed by using the series positive clipper. Question: In your own opinion. Why do we need to clip a certain amount of voltage in positive or negative or on both sides? What is the benefit of that in our devices or circuits in doing such thing?
A sine wave carrier is modulated by a single tone so that Emax = 25 mV and Emin = 10 mV. Calculate the modulation index. a.0.67 b.0.29 c.0.43 d.0.60
a. For an AC voltage of 10 v, its peak to peak value is Vp-p. b. For a peak value of 100 Vp, its rms value is V. c. The time period of a 1 MHz radio signal is us.
42 Modulation is dune in A. Tramamitter Radio veceiver C. Between transmitter and radio receiver D. None of the above 43. At 100 modulation, the power in each sidehands in AY 50% B. 40% C. 60% D 25% 44 In a TV tranumission, picture is modulated A. Frequency B. Phase CT Amplitade D. None of the above of that of carrier. 45. Given a sine wave modulating signal, PM moduluted wave appears to be frequency modulated by cosine modulating wave. A. True B. False
The carrier frequency is 600 Hz, and the modulating signal is a single-tone sinusoidal signal. The x-axis is in time while the y- axis is the amplitude of the AM signal. Determine the power of the unmodulated carrier in W. Assume the load resistance to be 1-ohm. 1.5 0.5 -0.5 -1.5 -2 0.005 0.01 0.015 0.02 0.025 0.03 0.035 0.04 0.045 0.05 Time (s)
A _________ sine wave is not useful in data communications; we need to send a _______ signal. a. composite; single-frequency b. single-frequency; composite c. single-frequency; double-frequency d. none of the above
H.W For general pulse train shown below: A sin (nw,t) 2 A 1, show that ; Dn = 2. for a duty cyele %3D shou that : AT %3D Sinc (nT) To To 3. for a duty syele : To & A= 1 %3D Find Dn .
The carrier frequency is 500 Hz, and the modulating signal is a single- tone sinusoidal signal. The x-axis is in time while the y-axis is the amplitude of the AM signal. Determine the power of the unmodulated carrier in W. Assume the load resistance to be 1-ohm. 4 3 1 -1 2 -3 -4 -5 0.005 0.01 0.015 0.02 0.025 0.03 0.035 0.04 0.045 0.05 Time (s)
Ope X. The frequency spectrum of an AM signal is shown below: 5.5V 1V 1V 52kHz 58kHz a) if the modulating signal is a sine wave, write the equation of the modulating signal b) if the carrier signal is a cosine wave, write the equation of the carrier signal c) calculate the current of the AM signal flowing through a 300-ohm load