Related Questions

In the double tuned circuit, if the mutual inductance between the two tuned circuits is decreased, the level of resonance curve ___________
A Remains the same
B Is lowered
C Is raised
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
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
If a high degree of selectivity is desired, then double-tuned circuit should have ___________ coupling
A Loose
B Tight
C Critical
D None of the above
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 tuned amplifier is used in ___________ applications
A Radio frequency
B Low frequency
C Audio frequency
D None of the above
Tuned class C amplifiers are used for RF signals of ___________
A Low power
B High power
C Very high power
D None of the above
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
In a radio receiver, noise is generally developed at ___________
A IF stage
B Receiving antenna
C Audio stage
D RF stage

Next steps