# Analog And Digital Communication Interview Questions And Answers Filetype Pdf

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## Analog And Digital Communication Interview Questions And Answers Filetype

Analog Communication is a data transmitting technique in which information signal is transmitted in analog nature. An Analog signal is a. To produce modulated signal inside the transmitter in Analog.

Communication, analog signal modulates the high carrier frequency. Than this modulated signal is transmitted with the. What is Sampling? What is Sampling Theorem?

Ans: Sampling is defined as the process in which an analog signals are converted into digital signals. It means that a. Sampling Theorem is defined as : The continuous time signal that can be represented in its samples and recovered back. Ans: Pulse Amplitude Modulation is the process by which the amplitude of the regularly spaced pulses varies according to. What is Modulation? What happens in over modulation?

Ans: Modulation is defined as the process in which some characteristics of the signal called carrier is varied according to. In case of over modulation, the modulation index is greater than one and envelope distortion occurs. Ans: In case of Nyquist rate, the sampling frequency is equal to the maximum frequency of the signal and therefore the. Ans: Frequency Modulation can be defined as the frequency of the carrier wc is varied acc. Ans: Under sampling is also known as aliasing effect in which the the sampling frequency is less than the maximum.

Ans: Multiplexing is defined as the process in which a number of message signals are combined together to form. The two types of multiplexing are:. Frequency Division Multiplexing: In this technique, fixed frequency bands are allotted to every user in the complete. Time Division Multiplexing: When the pulse is present for the short time duration and most of the time their is no signal.

Ans: Amplitude Modulation is defined as the process in which the instantaneous value of the amplitude of the carrier is. Sampling frequency must be greater than the frequency of the modulating signal.

Now, Earth has turned into a global village by adopting various processes for the communication. We are dealing with. Thus, with the advancement in the world and technologyCommunication plays a. Communication is the process of connection establishment between two points for. Mainly their are three field of Electronics namely Computers, Communication and Control.

In simplex type, one unit is equipped with a transmitter and the other side is equipped with only one receiver but. Here, the communication system that is capable of transmitting information in both directions but the flow is only one way. In HDX type, one unit is equipped with transmitter as well receiver at.

Full-duplex Ethernet connections work on. Answer: Modulation is the process by which some characteristics of signal known as Carrier Signal is varied in.

Answer: 1. When we want to transmit electrical signal over an antenna, through free space, it must be converted into. Only electro-magnetic waves have the property to travel through space vacuum at the speed of.

To make msg signal or voice signal travel longer distance. To increase the signal to noise ratio. Answer: In analog modulation bandwidth required is low while in digital modulation due to higher bit rate, heigher channel. Answer: Multiplexing is defined as the process in which a number of message signals are combined together to form.

Answer: It suffers from tolerance which occurred in its analog components. In the process of Companding, the weak signals are amplified and strong signals are attenuated before applying them to.

The study and use of electrical devices that operate by controlling the flow of electrons or other electrically charged. Communication means transferring a signal from the transmitter which passes through a medium then the output is.

As a technology, analog is the process of taking an audio or video signal the human voice and translating it into. Digital on the other hand is breaking the signal into a binary format where the audio or video data is.

Digital signals are immune to noise, quality of transmission and reception is good, components used in digital. The application of science to the needs of humanity and a profession in which a knowledge of the mathematical and. If the electronic device is plugged into a standard. Electric devices use line voltage vAC, vAC, etc Electric devices can also be designed to operate on DC. Examples: are incandescent lights, heaters, fridge, stove, etc The process of obtaining a set of samples from a continuous function of time x t is referred to as sampling.

It states that, while taking the samples of a continuous signal, it has to be taken care that the sampling rate is equal to or. What is cut-off frequency? The frequency at which the response is -3dB with respect to the maximum response. Passband is the range of frequencies or wavelengths that can pass through a filter without being attenuated. A stopband is a band of frequencies, between specified limits, in which a circuit, such as a filter or telephone circuit, does.

This range. Since most of. What is modulation? And where it is utilized? Modulation is the process of varying some characteristic of a periodic wave with an external signals. These high frequency carrier signals can be transmitted over the air easily and are capable of travelling long distances.

The characteristics amplitude, frequency, or phase of the carrier signal are varied in accordance with the information. Demodulation is the act of removing the modulation from an analog signal to get the original baseband signal back. Demodulating is necessary because the receiver system receives a modulated signal with specific characteristics and it. Explain AM and FM. AM-Amplitude modulation is a type of modulation where the amplitude of the carrier signal is varied in accordance with.

FM-Frequency modulation is a type of modulation where the frequency of the carrier signal is varied in accordance with. An oscillator is a circuit that creates a waveform output from a direct current input. The two main types of oscillator are. The harmonic oscillators have smooth curved waveforms, while relaxation oscillators have.

What is crosstalk? Crosstalk is a form of interference caused by signals in nearby conductors. The most common example is hearing an. Crosstalk can also occur in radios, televisions, networking equipment, and even. A rectifier changes alternating current into direct current. This process is called rectification. The three main types of.

A rectifier is the opposite of an inverter, which changes direct current into. HWR- The simplest type is the half-wave rectifier, which can be made with just one diode. When the voltage of the. When the voltage is. The result is a clipped copy of the alternating current.

This pulsating. FWR- The full-wave rectifier is essentially two half-wave rectifiers, and can be made with two diodes and an earthed. The positive voltage half of the cycle flows through one diode, and the negative half flows.

The centre tap allows the circuit to be completed because current cannot flow through the other diode. The result is still a pulsating direct current but with just over half the input peak voltage, and double the frequency. A resistor is a two-terminal electronic component that opposes anelectric current by producing a voltage drop between its. The process of storing energy in the capacitor is known as "charging", and involves electric charges of equal.

Capacitors are often used in electric and electronic circuits asenergy-storage devices. They can also be used to.

This property makes them useful in electronic filters. Capacitors are occasionally referred to as condensers. This term is considered archaic in English, but most other. An inductor is a passive electrical device employed in electrical circuits for its property of inductance.

## Analog communication interview questions and answers

Analog Communication is a data transmitting technique in which information signal is transmitted in analog nature. An Analog signal is a. To produce modulated signal inside the transmitter in Analog. Communication, analog signal modulates the high carrier frequency. Than this modulated signal is transmitted with the. What is Sampling? What is Sampling Theorem?

What are the disadvantages of Analog communication? What are the Advantages of Digital Communication? Reliable, Noise effect is very less, power consumption is very less, various Digital ICs are available so circuits not complex , cheap, Error detection and correction is also possible. What are different types of digital modulation? How to convert an analog signal into digital signal? Define the functionality of Sampler, Quantizer?

Routing is the process of finding a path on which data can pass from source to destination. Routing is done by a device called routers, which are network layer devices. The job of the Data Link layer is to check messages are sent to the right device. Another function of this layer is framing. When a switch receives a signal, it creates a frame out of the bits that were from that signal. With this process, it gains access and reads the destination address, after which it forwards that frame to the appropriate port. This is a very efficient means of data transmission, instead of broadcasting it on all ports.

## Analog Communication Interview Questions & Answers

Oct 16, Dear Readers, Welcome to Analog Communication multiple choice questions and answers with explanation. Specially developed for the Electronic Engineering freshers and Today added electrical engineering objective questions and answers in one pdf recently added signal and system 50 most important expected mcq with solution for vizag mt and bel pe exam analog ,digital and power electronics basic level important mcq pdf for upcoming exam electrical machine 25 important mcq pdf for upcoming exam basic electrical itidiploma based mostly Elements of Digital Communication. The elements which form a digital communication system is represented by the following block diagram for the ease of understanding. Following are the sections of the digital communication system.

#### Communication Interview Questions And Answers Pdf

PART 1. PART 2. PART 3. PART 4. PART 5. PART 6. PART 7.

What is sampling? What is Sampling Theorem? Ans Sampling is defined as the process in which an analog signals are converted into digital signals. It means that a continuous time signal is converted into a discrete time signal. You might not require more epoch to spend to go to the ebook start as without difficulty as search for them.

What is Electronic? The study and use of electrical devices that operate by controlling the flow of electrons or other electrically charged particles. What is communication? Communication means transferring a signal from the transmitter which passes through a medium then the output is obtained at the receiver. Different types of communications? Analog and digital communication.

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