Amplitude modulation quiz

Which of the following is the analog modulation scheme that requires the minimum transmitted power and minimum channel bandwidth?

• Double Sideband Suppressed Carrier (DSB-SC)

• Single Sideband Modulation (SSB)
• Phase Modulation (PM)
• Amplitude Modulation (AM)

What is the primary advantage of using Single Sideband Modulation (SSB) over Amplitude Modulation (AM)?

• Better noise immunity

• Simpler receiver design

• Lower power consumption

• Higher bandwidth efficiency

The process of recovering of original modulating signal from the modulated signal is?

• Transmission
• Demodulation
• Modulation
• Encoding

The upper and lower sideband frequencies for 5KHz amplitude modulation with a 30KHz carrier frequency will be?

• Upper Sideband: 35KHz, Lower Sideband: 25KHz
• Upper Sideband: 45KHz, Lower Sideband: 10KHz
• Upper Sideband: 30KHz, Lower Sideband: 15KHz
• Upper Sideband: 40KHz, Lower Sideband: 20KHz

What do you understand by the term SSB?

• Suppressed Side Band
  

• Selected Single Band

• Suppressed Single Band
  

• Single Side Band

What will be the effect on power if the modulation index of a frequency modulated signal is increased?

• Remains constant .

• Increases

• Decreases

• First increases and then decreases.

Overmodulation results in ________________

• enhanced signal strength
• increased bandwidth efficiency
• improved audio clarity
• distortion and signal integrity loss

What is the purpose of peak clipper circuits in radios?

• To limit the amplitude of audio signals and prevent distortion in radios.
• To enhance the volume of audio signals in radios.
• To filter out high-frequency noise in radios.
• To amplify weak signals for better reception.

What is the main disadvantage of Amplitude Modulation (AM) compared to Frequency Modulation (FM)?

• Lower noise immunity

• More complex receiver design

• Higher power consumption

• Wider bandwidth requirement

In the context of modulation, what does the term 'carrier frequency' refer to?

• The frequency of the original message signal

• The frequency at which the signal is transmitted

• The frequency that carries the information signal

• The frequency of the modulated signal