Modulation is done in ___________
Modulation is done in ___________
In TV transmission, picture signal is ___________ modulated
In TV transmission, picture signal is ___________ modulated
As the modulation level is increased, the carrier power ___________
As the modulation level is increased, the carrier power ___________
If modulation is 100% then signal amplitude is ___________ carrier amplitude
If modulation is 100% then signal amplitude is ___________ carrier amplitude
In an AM wave useful power is carrier by ___________
In an AM wave useful power is carrier by ___________
In a radio receiver, we generally use ___________ oscillator as a local oscillator
In a radio receiver, we generally use ___________ oscillator as a local oscillator
In India, ___________ modulation is used for radio transmission
In India, ___________ modulation is used for radio transmission
In TV transmission, sound signal is ___________ modulated
In TV transmission, sound signal is ___________ modulated
At 100% modulation, the power in each sideband is ___________ of that of carrier
At 100% modulation, the power in each sideband is ___________ of that of carrier
In an AM wave, the majority of the power is in ___________
In an AM wave, the majority of the power is in ___________
The function of ferrite antenna is to ___________
The function of ferrite antenna is to ___________
Superhertodyne principle refers to
Superhertodyne principle refers to
Overmodulation results in ___________
Overmodulation results in ___________
In a TRF radio receiver, the RF and detection stages are tuned to ___________
In a TRF radio receiver, the RF and detection stages are tuned to ___________
If level of modulation is increased ___________ power is increased
If level of modulation is increased ___________ power is increased
In radio transmission, the medium of transmission is ___________
In radio transmission, the medium of transmission is ___________
In a transmitter ___________ oscillator is used
In a transmitter ___________ oscillator is used
In the above question, what is the power in sidebands?
In the above question, what is the power in sidebands?
In a superhetrodyne receiver, the difference frequency is chosen as the IF rather than the sum frequency because ___________
In a superhetrodyne receiver, the difference frequency is chosen as the IF rather than the sum frequency because ___________
When the modulating signal controls the frequency of the carrier, we get___________
When the modulating signal controls the frequency of the carrier, we get___________
A 100 V carrier is made to vary between 160 V and 40 V by the signal. What is the modulation factor?
A 100 V carrier is made to vary between 160 V and 40 V by the signal. What is the modulation factor?
The diode detector in an AM radio receiver is usually found ___________
The diode detector in an AM radio receiver is usually found ___________
Modulation refers to a low-frequency signal controlling the ___________
Modulation refers to a low-frequency signal controlling the ___________
Overmodulation (amplitude) occurs when signal amplitude is ___________ carrier amplitude
Overmodulation (amplitude) occurs when signal amplitude is ___________ carrier amplitude
Man made noise are ___________ variations.
Man made noise are ___________ variations.
In amplitude modulation, bandwidth is ___________ the audio signal frequency
In amplitude modulation, bandwidth is ___________ the audio signal frequency
The letters AVC stand for ___________
The letters AVC stand for ___________
A high Q tuned circuit will permit an amplifier to have high ___________
A high Q tuned circuit will permit an amplifier to have high ___________
Demodulation is done in ___________
Demodulation is done in ___________
In superhetrodyne receiver, the input at mixer stage is ___________
In superhetrodyne receiver, the input at mixer stage is ___________
The major advantage of FM over AM is ___________
The major advantage of FM over AM is ___________
The signal voltage induced in the aerial of a radio receiver is of the order of ___________
The signal voltage induced in the aerial of a radio receiver is of the order of ___________
The IF is 455 kHz. If the radio receiver is tuned to 855 kHz, the local oscillator frequency is ___________
The IF is 455 kHz. If the radio receiver is tuned to 855 kHz, the local oscillator frequency is ___________
The superhetrodyne principle provides selectivity at ___________ stage
The superhetrodyne principle provides selectivity at ___________ stage
Most of the amplification in a superhetrodyne receiver occurs at ___________ stage
Most of the amplification in a superhetrodyne receiver occurs at ___________ stage
In a radio receiver, noise is generally developed at ___________
In a radio receiver, noise is generally developed at ___________
A 50 kW carrier is to be amplitude modulated to a level of 85%. What is the carrier power after modulation?
A 50 kW carrier is to be amplitude modulated to a level of 85%. What is the carrier power after modulation?
In amplitude modulation, the ___________ of carrier is varied according to the strength of the signal.
In amplitude modulation, the ___________ of carrier is varied according to the strength of the signal.
If a radio receiver amplifies all the signal frequencies equally well, it is said to have high ___________
If a radio receiver amplifies all the signal frequencies equally well, it is said to have high ___________
If Amin = 40 and Amax = 60, what is the percentage of modulation?
If Amin = 40 and Amax = 60, what is the percentage of modulation?
