Explain, why high frequency carrier waves are needed for effective transmission of signals. A message signal of 12 kHz and peak voltage 20 V is used to modulate a carrier wave of frequency 12 MHz and peak voltage 30 V. Calculate the (i) modulation index (ii) side-band frequencies.

Explain, why high frequency carrier waves are needed for effective transmission of signals. A message signal of 12 kHz and peak voltage 20 V is used to modulate a carrier wave of frequency 12 MHz and peak voltage 30 V. Calculate the (i) modulation index (ii) side-band frequencies.

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter33: Inductors And Ac Circuits

Section: Chapter Questions

Problem 45PQ

See similar textbooks

Related questions

Q: The ideal condition of AM is when the modulation index is equal to one hundred. True O False The…

A: Amplitude Modulation is a commonly used transmission technique, by which the signal containing…

Q: The AM band extends from approximately 500 kHz to 1,600 kHz. If a 1.5-?H inductor is used in a…

A: Given: AM band ranges between 500 Hz - 1600 Hz That is, fmin=500 kHz=500×10-3 Hz & fmax=1600…

Q: A message signal of frequency 10 kHz and peak voltage 10 V is used to modulate a carrier of…

A: Given data: A message signal of frequency is, fm = 10 kHz A message peak voltage is, Vm = 10 V A…

Q: 2. b. A capacitor of 23µF connected to a 240V, 50HZ Supply. Calculate: i. The capacitive reactance(…

A: solution as

Q: In radiofrequency (RF) ablation, asmall needle is inserted into a cancerous tumor. When…

A: The frequency of the signal is, The radio wave will travel with the light’s speed in the vacuum. It…

Q: The instantaneous value of an 800-Hz sine wave current is 5A when t =0.5ms. What is the peak…

Q: A 100 V carrier wave is made to vary between 160 V and 40 V by a modulating signal. What is the…

A: Given: The amplitude of the carrier wave is 100 V. The maximum amplitude is 160 V. The minimum…

Q: In a pure A.C capacitive circuit O Current lags the voltage ,by a phase angle of 30 deg O Current…

A: AC capacitive circuit is given

Q: The FM radio band is broadcast between 88.0 MHz and 108 MHz. What is the maximum capacitance that…

A: Frequency for the LCR circuit is given by the formula: f =12πLCwhere f is the frequency of the…

Q: Determine the %modulation of an AM signal if the maximum voltage is 50 V and the minimum voltage is…

Q: A 150 m antenna transmitting frequency at 1.2 MHz by ground wave has an antenna current of 8 A. What…

A: Given : Transmitting frequency =f= 1.2 MHz Transmitting antennae height=ht= 150 meters Receiving…

Q: FM radio stations use radio waves with frequencies from 88.0 to 108 MHz to broadcast their signals.…

Q: At the same frequency, a larger capacitance C provides (a) more charging and discharging current (c)…

A: Capacitance are the devices which store charges in them.

Q: Capacitive reactance is more when O a. capacitance is more and frequency of supply is less O b.…

A: Hence before solving the questions we have to understand the concept of capacitive reactance. 1.…

Q: If the propagation losses (PEL) for a link that operates at a frequency of 4 GHz are 120dB, when…

A: Initially data given that, When frequency was 4 GHz the propagation losses was 120dB We have to…

Q: The oscillator of a 98.3-MHz FM station has an inductance of 1.8μh What value must the capacitance…

A: Using the equation for the resonant frequency, f0=12πLCf02=14π2LCC=14π2f02L

Q: LC-circuit of the radio receiver consists of variable capacitor (Cmin= 1 pF, Cmax=10 pF) and…

A: The resonant frequency is given by The wavelength is given by where, L is the inductance and C…

Q: I1= 100sin (750t+45) A I2=50sin (500t-30) A U=200sin (750t-90) V Plot the waves of the three of…

Q: what is the frequency of the AC signal in the figure ON OFF Sweeping X-POS INTENSITY 0.5 0.2 ms 100…

Q: Q1) For the parallel RLC bandpass filter shown in the circuit below: R = 795.774 N, L = 253.303 µH,…

A: Given: The value of the resitor is 795.774 Ω. The value of the inductor is 253.303 μH. The value of…

Q: FM radio stations use radio waves with frequencies from 88.0 to 108 MHz to broadcast their signals.…

Q: A power company charges $0.095 per KW•hr. There is a microwave rated at 1200 W, a TV rated at 60W,…

A: Given data: Cost of electricity = $0.095 per KW•hr Power of Microwave = 1200 W = 1.2 kW used for 5…

Q: CONNECTING A TRANSMITTER WITH AN IMPEDANCE ANTENNA (ZR=300 OHMS) BY A TRANSMISSION LİNE WITH ITS…

A: Given: Impedance of antenna τb= 300Ω…

Q: A carrier signal given by (cos2Tt105t) volt is AM modulation by the message signal given by…

A: The correct option for the following Ques is Option B Ps= 64, Pc = 128, bandwidth = 2khz, and u =…

Q: The capacitive reactance of the capacitor is more if: O a. capacitance is more and frequency of…

A: Required : When is the capacitive reactance more.

Q: An LC circuit with a 5.00-pF capacitor oscillates in such a manner as to radiate at a wavelength of…

A: capacitance, C = 5 pF wavelength = 3.3 m

Q: LC oscillators have been used in circuits connected to loudspeakers to create some of the sounds of…

Q: 2. What happens to the electrical signal as it reaches the radio receiver? It generates a…

A: Given : what happens to the electrical signal as it reaches the radio receiver?

Q: (6) A step-up transformer steps up voltage by ten times, If voltage input is 120 volts, voltage…

A: (6) Input voltage stepped-up n times imply the output voltage is n fold that of the input voltage.…

Q: A 4G phone has a data receiver with an inductance of 0.3 μH. When the capacitance is tuned to 2e-13…

A: Write the given data. L=0.3×10-6 HC=2×10-13 F

Q: 500Hz and voltage 3v. frequency deviation 6.3KHZ .if the fm voltage changes to 9v calculate new…

A: frequency deviation is directly proportional to voltage △f ∝ V △f = frequency deviation V=…

Q: What is the magnitude of gm for a JFET when Ipss=6mA and Vp= -3V at the DC biasing point when VGs=…

A: The formula of gm is given by gm=2IDSSVP1-VGSVP

Q: High-end headphones (such as the likes of Audeze and HiFiMan) have a such high impedance compared to…

A: The given data are listed below with appropriate variables. Here, dh denotes the diameter of a…

Q: a carrier signal vc(t) = 10 cos(2 pi 3000t) Volts is modulated by a sine wave vm(t) =7 cos(2 pi…

A: Modulation index = Em /Ec

Question

Explain, why high frequency carrier waves are needed for effective transmission of signals.

A message signal of 12 kHz and peak voltage 20 V is used to modulate a carrier wave of frequency 12 MHz and peak voltage 30 V. Calculate the

(i) modulation index

(ii) side-band frequencies.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

Step 2

Part (i)

Part (ii)

Step by step

Solved in 4 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions

The AM band extends from approximately 500 kHz to 1,600 kHz. If a 1.5-?H inductor is used in a tuning circuit for a radio, what are the extremes that a capacitor must reach in order to cover the complete band of frequencies? Cmax = nF Cmin = n
A message signal of frequency 10 kHz and peak voltage 10 V is used to modulate a carrier of frequency 1 MHz and peak voltage 20 V. Determine (i) the modulation index, (ii) the side bands produced.
A transmitter transmits an AM signal with a carrier frequency of 1470 kHz. When a superheterodyne radio receiver (which has a poor selectivity in its RF-stage bandpass filter) is tuned to 1530 kHz, the signal is heard loud and clear. However, if this radio is cheap, its front-end bandpass filter is not very selective. Thus, the same signal is also heard (not as strongly) when tuned to another carrier frequency setting within the AM range of 535-1605 kHz. State, with reasons, at what frequency you will hear this station. The IF is 455 kHz.
If the propagation losses (PEL) for a link that operates at a frequency of 4 GHz are 120dB, when using a frequency of 8 GHz the value of the new propagation losses will be: Select one: A. 126dB b. 140dB c. 130dB
When you connect two loudspeakers to the output of a stereoamplifier, should you be sure the lead-in wires are equal inlength to avoid a time lag between speakers? Explain.
A station is given a carrier frequency of 88 kHz. Having a modulating frequency of 12 kHz, compute for the upper and lower sidebands of the station.
An important news announcement is transmitted by radio waves to people who are 100 km away, sitting next to their radios, and by sound waves to people sitting across the newsroom, 3.0 m from the newscaster. Who receives the news first? Explain. Take the speed of sound in air to be 343 m/s.
The oscillator of a 98.3-MHz FM station has an inductance of 1.8μh What value must the capacitance be?
Local phone carriers use the n78 band at 3.5 x 109 Hz. What is the wavelength at this frequency? I. 1.16 x 10-1mII. 1.16 x 101 mIII. 8.57 x 102mIV. 8.57 x 10-2m
The AM band extends from approximately 500 kHz to 1,600 kHz. If a 1.0-?H inductor is used in a tuning circuit for a radio, what are the extremes that a capacitor must reach in order to cover the complete band of frequencies? What does Cmax= What does Cmin= Both answer in nF
In reading the instruction manual that came with your garage-door opener, you see that the transmitter unit in your car produces a 250 mW signal and that the receiver unit is supposed to respond to a radio wave of the correct frequency if the electric field amplitude exceeds 0.10 V/m. You wonder if this is really true. To find out, you put fresh batteries in the transmitter and start walking away from your garage while opening and closing the door. Your garage door finally fails to respond when you’re 42 m away. Are the manufacturer’s claims true?
An LC circuit in an AM tuner (in a car stereo) uses a coil with an inductance of 2.5 mH and a variable capacitor. If the natural frequency of the circuit is to be adjustable over the range 540 to 1600 kHz (the AM broadcast band), that range of capacitance is required?