QUIZ ON MODULATION

Modulation is done in …………..

• Transmitter

• Radio receiver

• Between transmitter and radio receiver

• None of the above

Advantage of using a high frequency carrier wave is

• Signal can be transmitted over very long distances

• Dissipates very small power

• Dissipates very small power

• All of the above

Modulation is required for

• Reducing noise while transmission

• Multiplexing the signals

• Reduction of Antenna height

• All of the above

The minimum antenna height required for transmission in 5000Hz

• 
  

  6Km

  
  

• 60 Km

• 6m

• 60 m

Amplitude modulation is

• Change in amplitude of the carrier according to modulating signal

• Change in frequency of the carrier according to modulating signal

• Change in amplitude of the modulating signal according to carrier signal

• Change in amplitude of the carrier according to modulating signal frequency