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WorksheetsTransission at High Frequency
Total questions: 10
Worksheet time: 6mins
The element of Radio communication that convert radio waves back to sound is the ........
Microphone
Transmitter
Receiver
Loudspeaker
The term modulation in radio communication means
Conversion of radio signal to sound
Conversion of electrical signals into radio waves
Conversion of sound into electrical signals
All of the above
The work of the Microphone is to
transmit radio waves to the air
convert electrical energy to sound
convert sound into electrical signals
trap the electromagnetic waves from the air
Which element of radio transmission is used as a modulator
Loud speaker
Radio Transmitter
Radio box
Receiving aerial
The element of Radio communication used as a demodulator is the
Transmitter
Radio Box
Transmitting aerial
Loud Speaker
One of the following elements of radio communication is NOT found in our homes.
Receiving aerial
Radio receiver
Loud Speaker
Microphone
The different Radio stations transmit their messages using specific frequencies. What element of radio communication is used to select the frequency at which the station operates.
The microphone
The Loud Speaker
The Transmitter
The Radio receiver
A more modern method of receiving television signals now is through
Intranet
Satellite
Oscillator
None of the above
The work of the transmitting aerial is to
Beam radio waves into air
receive radio waves
convert sound energy into electrical signals
convert electrical signals into sound
The function of the receiving aerial is to
convert electromagnetic waves into sound
receive the radio waves
convert sound into electromagnetic waves
All of the above
