18 Questions
What is the main purpose of a signal in a communication system?
To ensure synchronization between sender and receiver
What unit is used to measure wavelength?
Meters
What does the term 'amplitude' refer to in a wave?
Vertical distance from a point on the wave to the horizontal axis
Which frequency range is associated with Ground Wave (GW) propagation?
30 KHz - 300 KHz
Which term describes the number of waves made per second?
Frequency
What type of propagation is common in the frequency range of 3 KHz - 30 KHz?
GW propagation
What is noise in a communication system?
Interference - an unwanted and undesired form of signal
What type of signals are commonly associated with Infrared communication?
Video signals
Which frequency range is used for International broadcasting and military communication?
30 MHz - 300 MHz
What type of propagation is associated with Ultra-High Frequency (UHF) signals?
Line-Of-Sight (LOS) propagation
Which frequency range is used for radar, satellite communication, and wireless local loops?
30 GHz - 300 GHz
What does phase describe in a waveform?
Position of the waveform relative to time zero; measurement of delay
Which type of wave has a fixed amplitude but its pulse width and frequency can be changed?
Digital wave
What is an example of an Analog wave?
Human voice
Which type of media uses cables and is limited by physical geography?
Wired Media
What is the transmission mode where data flows in one direction only?
Simplex Mode
Which type of signal represents data stored in the memory of a computer as 0s and 1s?
Digital signal
What is the characteristic of an Unbounded Media?
Transmits data through waves
Explore different types of signals including electrical, acoustic, video, biological, and noise signals. Learn about the main purpose of signals which is to maintain synchronization between sender and receiver over a physical medium and support transmission of data signal for interpretation.
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