m= M/A A is the carrier amplitude. Where, M is the modulation amplitude and is the peak change in the RF amplitude from its unmodulated value.
147) A carrier wave of peak voltage 12V is used to transmit a message signal. What should be the peak voltage of the modulating signal in order to have a modulation index of 75%?
Answer is:
9V
Explanation:
Related Electronic Devices and Communication MCQ with Answers
Answer is:
1
Explanation:
Multiplexing is a scheme for transmitting multiple signals at the same time e.g. speeches of ten persons in different rooms on the same channel. Only one transmitters will be required in any multiplexing scheme
Answer is:
yes
Explanation:
In Amplitude modulation if one of the two side bands is removed by a filter it is possible to recover the modulating signal
Answer is:
0.662
Explanation:
m= M/A A is the carrier amplitude. Where, M is the modulation amplitude and is the peak change in the RF amplitude from its unmodulated value.
Answer is:
985 kHz, 975 kHz
Explanation:
A standard AM broadcast station is allowed to transmit modulating frequencies up to 5 kHz. If the AM station is transmitting on a frequency of 980 kHz, maximum and minimum upper and lower sidebands are 985 kHz, 975 kHz