ThatQuiz Test Library Take this test now
Communication Systems in Electrical Engineering
Contributed by: Parkin
  • 1. Communication systems in electrical engineering involve the transmission, reception, processing, and storage of information through electrical signals. These systems play a crucial role in facilitating the exchange of data and messages between different devices and users. Key components of communication systems include transmitters, receivers, channels, and protocols. The design and analysis of communication systems aim to ensure efficient and reliable transfer of information while considering factors such as bandwidth, noise, and data rate. Engineers in this field work on developing technologies such as wireless communication, optical networks, and satellite communication to enhance connectivity and enable communication across various platforms and distances.

    What is the Shannon capacity formula in communication systems?
A) C = B * SNR
B) C = log2(1 + SNR)
C) C = B * log2(1 + SNR)
D) C = B / log2(1 + SNR)
  • 2. What is the role of a repeater in communication systems?
A) To digitize analog signals
B) To amplify and retransmit signals
C) To modulate signals
D) To filter out noise from signals
  • 3. What is the function of a demodulator in a communication system?
A) To extract the original message signal from the modulated signal
B) To transmit the signal
C) To encode the message signal
D) To attenuate the signal
  • 4. What does BER stand for in communication systems?
A) Binary Encoding Rate
B) Bandwidth Error Rate
C) Baseband Error Rate
D) Bit Error Rate
  • 5. What is the Nyquist theorem used for in communication systems?
A) To determine the maximum data rate over a channel
B) To amplify signals
C) To equalize signals
D) To modulate signals
  • 6. What is the purpose of error detection codes in communication systems?
A) To detect and correct errors in transmitted data
B) To increase data transmission speed
C) To compress data
D) To encrypt data
  • 7. In communication systems, what does ADC stand for?
A) Automatic Data Communication
B) Analog-to-Digital Converter
C) Analog Digital Channel
D) Amplitude Domain Converter
  • 8. What is meant by the term 'duplexing' in communication systems?
A) Error correction in data transmission
B) Simultaneous transmission and reception on a common channel
C) Analog to digital signal conversion
D) Frequency modulation of signals
  • 9. What is the purpose of a splitter in distribution systems?
A) To filter out noise
B) To combine signals into a single path
C) To amplify signals
D) To divide a signal into multiple paths
  • 10. What is the primary function of a router in communication networks?
A) To convert analog signals to digital signals
B) To amplify signals
C) To route data packets between different networks
D) To modulate signals
  • 11. What is the purpose of a transceiver in communication systems?
A) To encode signals
B) To both transmit and receive signals
C) To amplify signals
D) To filter out noise
  • 12. What does the acronym CDMA stand for in communication systems?
A) Centralized Data Modulation Algorithm
B) Channel Division Multiplexing Array
C) Coordinated Domain Modulation Approach
D) Code Division Multiple Access
  • 13. Which of the following is true about the bandwidth of a signal in communication systems?
A) It is the amplitude of the signal
B) It is the time duration of the signal
C) It is the rate of signal transmission
D) It is the range of frequencies occupied by the signal
  • 14. What is the role of a network switch in communication networks?
A) To convert digital signals to analog signals
B) To connect devices within a local area network and forward data packets
C) To modulate signals
D) To encrypt data
  • 15. What does the term 'echo cancellation' refer to in communication systems?
A) Shifting signals in time
B) Amplifying echo in signals
C) Removing echo from transmitted signals
D) Creating echo effects on signals
  • 16. Which protocol is commonly used for email communication over the Internet?
A) FTP (File Transfer Protocol)
B) HTTP (Hypertext Transfer Protocol)
C) SMTP (Simple Mail Transfer Protocol)
D) TCP (Transmission Control Protocol)
  • 17. What is a multiplexer used for in communication systems?
A) To detect errors in transmitted data
B) To convert analog signals to digital signals
C) To combine multiple input signals into a single output
D) To decompress audio signals
  • 18. In digital communication, what does 'SNR' stand for?
A) System Network Requirement
B) Signal-to-Noise Ratio
C) Signal Neutralization Rate
D) Symbol Noise Reduction
  • 19. Which of the following is an example of a digital communication protocol?
A) Satellite Communication
B) Analog TV
C) FM Radio
D) TCP/IP
  • 20. Which of the following is a common frequency band used for Wi-Fi communication?
A) 500 MHz
B) 10 kHz
C) 2.4 GHz
D) 1000 GHz
  • 21. Which of the following components is typically used for signal amplification in a communication system?
A) Antenna
B) Transmitter
C) Modem
D) Amplifier
  • 22. What does the acronym 'AM' stand for in communication systems?
A) Amplitude Modulation
B) Audio Modulation
C) Analog Multiplexing
D) Amplification Method
  • 23. Which of the following is a digital modulation technique?
A) Phase Shift Keying (PSK)
B) Quadrature Amplitude Modulation (QAM)
C) Frequency Hopping Spread Spectrum
D) Continuous Wave Modulation
  • 24. Which type of modulation is used in Bluetooth communication technology?
A) Phase Modulation
B) Pulse Width Modulation
C) Frequency Hopping Spread Spectrum (FHSS)
D) Amplitude Modulation
  • 25. Which of the following is a common method for achieving error detection in digital communication?
A) Cyclic Redundancy Check (CRC)
B) Pulse Code Modulation (PCM)
C) Amplitude Modulation (AM)
D) Frequency Division Multiplexing (FDM)
Created with That Quiz — the site for test creation and grading in math and other subjects.