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Types of Signals and their Purpose

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Questions and Answers

What is the main purpose of a signal in a communication system?

To create interference in the transmission

To disrupt the transmission of data

To ensure synchronization between sender and receiver (correct)

To maximize noise in the channel

What unit is used to measure wavelength?

Volts

Hertz

Meters (correct)

Amperes

What does the term 'amplitude' refer to in a wave?

Measurement of the delay of the wave relative to a reference point

Vertical distance from a point on the wave to the horizontal axis (correct)

Position of the waveform relative to time zero

Number of waves per second

Which frequency range is associated with Ground Wave (GW) propagation?

30 KHz - 300 KHz Signup and view all the answers

Which term describes the number of waves made per second?

Frequency Signup and view all the answers

What type of propagation is common in the frequency range of 3 KHz - 30 KHz?

GW propagation Signup and view all the answers

What is noise in a communication system?

Interference - an unwanted and undesired form of signal Signup and view all the answers

What type of signals are commonly associated with Infrared communication?

Video signals Signup and view all the answers

Which frequency range is used for International broadcasting and military communication?

30 MHz - 300 MHz Signup and view all the answers

What type of propagation is associated with Ultra-High Frequency (UHF) signals?

Line-Of-Sight (LOS) propagation Signup and view all the answers

Which frequency range is used for radar, satellite communication, and wireless local loops?

30 GHz - 300 GHz Signup and view all the answers

What does phase describe in a waveform?

Position of the waveform relative to time zero; measurement of delay Signup and view all the answers

Which type of wave has a fixed amplitude but its pulse width and frequency can be changed?

Digital wave Signup and view all the answers

What is an example of an Analog wave?

Human voice Signup and view all the answers

Which type of media uses cables and is limited by physical geography?

Wired Media Signup and view all the answers

What is the transmission mode where data flows in one direction only?

Simplex Mode Signup and view all the answers

Which type of signal represents data stored in the memory of a computer as 0s and 1s?

Digital signal Signup and view all the answers

What is the characteristic of an Unbounded Media?

Transmits data through waves Signup and view all the answers