Electronics and Communication Engineering - Radio Receivers - Discussion

Discussion :: Radio Receivers - Section 1 (Q.No.4)


Which of the following should be used in order to prevent overloading or the last IF amplifier in a receiver?

[A]. Variable selectivity
[B]. Variable sensitivity
[C]. Double conversion
[D]. Squelch

Answer: Option B


No answer description available for this question.

Prathyusha Chowdary Musunuri said: (Jul 14, 2016)  
I think it is Variable sensitivity because the if IF amplifier is maximum condition we can reduce the noise signals.

Mohan said: (May 27, 2017)  
I think, Option A is correct answer.

Danielle Tampis said: (Feb 18, 2018)  
A received signal obviously has very low voltage amplitudes that's why you need variable sensitivity for the receiver to detect up to the weakest signal to be boosted using amplifiers. This is needed for the fidelity or having the exact replica of the transmitted signal.

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