Related Questions

In a radio receiver, noise is generally developed at ___________
A IF stage
B Receiving antenna
C Audio stage
D RF stage
The local oscillator of a broadcast receiver is tuned to a frequency higher than the incoming frequency
A To help the image frequency rejection
B To permit easier tracking
C Because otherwise an intermediate frequency could not be produced
D To allow adequate frequency coverage without switching
Why does the ionosphere of the Earth's atmosphere facilitate radio communication? i. The presence of ozone causes the reflection of radio waves to earth ii. Radio waves have a very long wavelength
A i only
B ii only
C both i & ii
D neither i nor ii
A radio receiver has ___________ of amplification
A One stage
B Two stages
C Three stages
D More than one stages
If a radio receiver amplifies all the signal frequencies equally well, it is said to have high ___________
A Sensitivity
B Selectivity
C Distortion
D Fidelity
The diode detector in an AM radio receiver is usually found ___________
A Before the first RF stage
B After the first RF stage
C After several stages of amplification
D None of the above
The signal voltage induced in the aerial of a radio receiver is of the order of ___________
A mV
B µV
C V
D None of the above
In a TRF radio receiver, the RF and detection stages are tuned to ___________
A Radio frequency
B IF
C Audio frequency
D None of the above
Double tuned circuits are used in ___________ stages of a radio receiver
A IF
B Audio
C Output
D None of the above
In an LC oscillator, the frequency of oscillator is ___________ L or C.
A Proportional to square of
B Directly proportional to
C Independent of the values of
D Inversely proportional to square root of

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