A message signal of frequency 10 kHz and peak voltage 10 V is used to modulate a carrier wave of frequency 1 MHz and peak voltage 20 V. If the modulation index is 0.5, what is the peak voltage of the upper sideband?
2.5 V
5 V
10 V
20 V
Related Questions
If an electromagnetic wave is transmitted to the height equal to 150 km with maximum frequency 300 kHz and critical frequency 100 kHz, the skip distance is
426 km
636 km
824 km
849 km
When the modulation percentage is 75, an AM transmitter produces 10 kW. How much of this is carrier power?
10 kW
13.33 kW
7.5 kW
7.81 kW
A radio station has two channels. One is AM at 1020 kHz and the other FM at 89.5 Mhz. For good results you will use
Longer antenna for the AM channel and shorter for the FM
Shorter antenna for the AM channel and longer for the FM
Same length antenna will work for both
Information given is not enough to say which one to use for which
Basically, a communication system is a
system for transmitting information
device used for sending messages
method of encoding data
collection of interconnected networks
The highest frequency of radiowaves which when sent at some angle towards the ionosphere, gets reflected from that and returns to the earth is called
Critical Frequency
Maximum Usable Frequency (MUF)
Skip Distance
Optimum Working Frequency
The process of recovering the message signal from the modulated carrier wave is known as:
Modulation
Demodulation
Amplification
Transmission
Height of transmitter antenna when is radius of earth to have range is
Frequency range for microwaves is
300 kHz to 300 MHz
300 MHz to 300 GHz
300 GHz to 300 THz
300 THz to 300 PHz
The difference in the refractive index of the fiber core and fiber cladding in step-index fibers is typically
0.01%
1%
10%
25%
The radio waves of frequency 30 MHz to 300 MHz belong to
High frequency band
Very high frequency band
Ultra high frequency band
Super high frequency band
