Q.1
In India, ___________ modulation is used for radio transmission
Q.2
When the modulating signal controls the frequency of the carrier, we get___________
Q.3
In a radio receiver, noise is generally developed at ___________
Q.4
The diode detector in an AM radio receiver is usually found ___________
Q.5
The function of ferrite antenna is to ___________
Q.6
In superhetrodyne receiver, the input at mixer stage is ___________
Q.7
Overmodulation results in ___________
Q.8
A 50 kW carrier is to be amplitude modulated to a level of 85%. What is the carrier power after modulation?
Q.9
The major advantage of FM over AM is ___________
Q.10
In an AM wave, the majority of the power is in ___________
Q.11
In an AM wave useful power is carrier by ___________
Q.12
In a radio receiver, we generally use ___________ oscillator as a local oscillator
Q.13
In radio transmission, the medium of transmission is ___________
Q.14
A high Q tuned circuit will permit an amplifier to have high ___________
Q.15
If a radio receiver amplifies all the signal frequencies equally well, it is said to have high ___________
Q.16
If Amin = 40 and Amax = 60, what is the percentage of modulation?
Q.17
The signal voltage induced in the aerial of a radio receiver is of the order of ___________
Q.18
The letters AVC stand for ___________
Q.19
In a TRF radio receiver, the RF and detection stages are tuned to ___________
Q.20
The IF is 455 kHz. If the radio receiver is tuned to 855 kHz, the local oscillator frequency is ___________
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