Related Questions

An AM receiver uses a diode detector for demodulation. This enables it satisfactorily to receive
A Single-sideband, suppressed-carrier
B Single-sideband, reduced-carrier
C ISB
D Single-sideband, full-carrier
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 salesman usually makes 25% profit on every radio he sells. During a sale, he reduces his profit margin to 20%, while his sales increase by 10%. What is the radio of his new profit to his usual profit?
A 10:25
B 11:15
C 22:25
D 20:25
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
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 radio receiver, we generally use ___________ oscillator as a local oscillator
A Crystal
B Wien-bridge
C Phase-shift
D Hartley
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

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