Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
Q1171: The bandwidth of an AM signal is _______ times the modulating frequency.
- A: Equal to
- B: Two
- C: Half
- D: Four
View Answer
B
Q1172: In AM, the upper and lower sidebands contain _______.
- A: The same information
- B: Different signals
- C: Noise only
- D: High-frequency components
View Answer
A
Q1173: Amplitude Modulation is commonly used in _______.
- A: AM Radio
- B: Cellular Networks
- C: Digital Television
- D: Satellite Communications
View Answer
A
Q1174: The carrier frequency in an AM signal is usually _______ than the modulating frequency.
- A: Lower
- B: Higher
- C: Equal
- D: Variable
View Answer
B
Q1175: The primary function of a modulator in AM transmission is to _______.
- A: Increase signal power
- B: Combine carrier and message signals
- C: Filter noise
- D: Decode the signal
View Answer
B
Q1176: The total power in an AM wave is the sum of _______.
- A: Carrier and noise power
- B: Carrier and sideband power
- C: Sidebands only
- D: Modulating frequency power
View Answer
B
Q1177: The depth of modulation in AM is represented by the _______.
- A: Frequency ratio
- B: Modulation index
- C: Phase shift
- D: Carrier power
View Answer
B
Q1178: What is the function of an envelope detector in AM demodulation?
- A: Amplify the signal
- B: Detect the amplitude variations
- C: Eliminate noise
- D: Shift the frequency
View Answer
B
Q1179: Amplitude Modulation (AM) is used in which of the following?
- A: Optical fiber communication
- B: Standard AM radio broadcasting
- C: Wireless LAN
- D: Bluetooth
View Answer
B
Q1180: The bandwidth of an AM signal is determined by _______.
- A: Carrier frequency
- B: Modulating signal frequency
- C: Antenna gain
- D: Transmission distance
View Answer
B