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A sensitive and selective receiver can be made using only amplifiers, selective filters, and a demodulator.

A sensitive and selective receiver can be made using only amplifiers, selective filters, and a demodulator. Correct Answer True

A sensitive and selective receiver can be made using only amplifiers, selective filters and a demodulator. This is called a tuned radio frequency or TRF receiver. Early radios used this design. However, such a receiver does not usually deliver the kind of performance expected in modern communications applications.

Related Questions

Which of the following statements are correct with reference to superheterodyne receivers? (i) The main advantage of the superheterodyne receiver is its better tracking (ii) The main advantage of the superheterodyne receiver is an improvement in sensitivity (iii) The image channel rejection in superheterodyne receiver comes from IF stages only (iv) The image channel rejection in the superheterodyne receiver comes from the RF stage only Choose the correct answer from the code given below:
Cleaning is done by
(i) Scraping and removal in filters slow sand
(ii) Back washing in slow sand filters
(iii) Scraping and removal in filters rapid sand
(iv) Back washing in rapid sand filters
The correct answer is
Consider the following statements in respect of slow sand filter and rapid sand filter: 1. The two filters differ in respect of the standards regarding the non-uniformity of the sand used in their filtering media. 2. The two filters do not differ in respect of the effective size of the sand used in them. 3. The two filters differ in respect of their respective under-drainage system. 4. The two filters differ in respect of their respective rate of filtration. Which of the above statements are correct? 
Which of the following statements are correct pertaining to the value of uniformity coefficient Cu for filter sand? (1) For slow sand filters, Cu = 1.8 to 2.5 (2) For rapid sand filters, Cu = 1.3 to 1.7 (3) For slow sand filters, Cu = 1.3 to 1.7 (4) For rapid sand filters, Cu = 1.8 to 2.5
Assertion A: Slow sand filters are more efficient in removal of bacteria than rapid sand filters.
Reason R: The sand used in slow sand filters is finer than that in rapid sand filters
Select your answer based on the coding system given below:
You are given two amplifiers, A and B, to connect in cascade between a 10-mV, 100-kΩ source (S) and a 100-Ω load (L). The amplifiers have voltage gain, input resistance, and output resistance as follows: for A, 100 V/V, 10 kΩ, 10 kΩ, respectively; for B, 1 V/V, 100 kΩ, 100 Ω, respectively. Your problem is to decide how the amplifiers should be connected so that the voltage gain is maximum.
Chopper stabilized dc amplifiers are complex amplifiers having ________ amplifiers incorporated in the module.
MODEM শব্দটি তৈরি হয়েছে- i. Modulator এর Mo ii. Demodulator এর Dem iii. Demodulator এর Modem নিচের কোনটি সঠিক?
Two non-inverting amplifiers, with gain =1 and gain=20 are made using identical operational amplifiers. As compared to the unity gain amplifier, the amplifier with gain=20 has ___________
With reference to 'Eco-Sensitive Zones', which of the following statements is/are correct? 1. Eco-Sensitive Zones are the areas that are declared under the Wildlife (Protection) Act, 1972 2. The purpose of the declaration of Eco-Sensitive Zones is to prohibit all kinds of human activities in those zones except agriculture. Select the correct answer using the code given below.