ELECTRONIC COMMUNICATIONS A SYSTEM
APPROACH UPDATED ACTUAL
QUESTIONS AND CORRECT ANSWERS
COMPLETE STUDY GUIDE FULL SOLUTION
●● What are the main barriers to communication?
Answer: Language and distance.
●● List four methods of communication.
Answer: 1. Face to face 2. Signals 3. Written word (letters) 4. Electrical
innovations (e.g., telegraph, telephone, radio, television, internet).
●● What are the basic components of a communication system?
Answer: Transmitter, channel or medium, receiver.
●● How does noise affect communication?
Answer: Noise degrades or interferes with transmitted information.
●● What is the role of a transmitter in a communication system?
Answer: It converts the electrical signal into a signal suitable for
transmission over a given medium.
, ●● What components make up a transmitter?
Answer: Oscillators, amplifiers, tuned circuits and filters, modulators,
frequency mixers, frequency synthesizers, and other circuits.
●● What is a communication channel?
Answer: The medium by which the electronic signal is sent from one
place to another.
●● Name four types of media used in communication channels.
Answer: 1. Electrical conductors 2. Optical media 3. Free space 4.
System-specific media (e.g., water for sonar).
●● What is the function of a receiver in a communication system?
Answer: It accepts the transmitted message from the channel and
converts it back into a form understandable by humans.
●● What components are typically found in a receiver?
Answer: Amplifiers, oscillators, mixers, tuned circuits and filters, and a
demodulator or detector.
●● What is a transceiver?
Answer: An electronic unit that incorporates circuits that both send and
receive signals.
APPROACH UPDATED ACTUAL
QUESTIONS AND CORRECT ANSWERS
COMPLETE STUDY GUIDE FULL SOLUTION
●● What are the main barriers to communication?
Answer: Language and distance.
●● List four methods of communication.
Answer: 1. Face to face 2. Signals 3. Written word (letters) 4. Electrical
innovations (e.g., telegraph, telephone, radio, television, internet).
●● What are the basic components of a communication system?
Answer: Transmitter, channel or medium, receiver.
●● How does noise affect communication?
Answer: Noise degrades or interferes with transmitted information.
●● What is the role of a transmitter in a communication system?
Answer: It converts the electrical signal into a signal suitable for
transmission over a given medium.
, ●● What components make up a transmitter?
Answer: Oscillators, amplifiers, tuned circuits and filters, modulators,
frequency mixers, frequency synthesizers, and other circuits.
●● What is a communication channel?
Answer: The medium by which the electronic signal is sent from one
place to another.
●● Name four types of media used in communication channels.
Answer: 1. Electrical conductors 2. Optical media 3. Free space 4.
System-specific media (e.g., water for sonar).
●● What is the function of a receiver in a communication system?
Answer: It accepts the transmitted message from the channel and
converts it back into a form understandable by humans.
●● What components are typically found in a receiver?
Answer: Amplifiers, oscillators, mixers, tuned circuits and filters, and a
demodulator or detector.
●● What is a transceiver?
Answer: An electronic unit that incorporates circuits that both send and
receive signals.
