Frequency modulation and demodulation viva questions free
Viva Questions for Analog Communication Lab. 1. Draw the block diagram of a communication system. 2. Distinguish between passband and baseband transmission. What is the drawback of baseband transmission? 3. Define modulation. 4. Distinguish between continuous wave modulation and pulse modulation. 5. What is the need for modulation? 6.
Modulation and Demodulation based Interview Questions. Q1. What is modulation and demodulation? Ans. Modulation is the process of altering the characteristics of the amplitude, frequency, or phase angle of the highfrequency signal in accordance with the instantaneous value of the modulating wave.
May 19, 2017 250 Amplitude Modulation (am) Interview Questions and Answers, Question1: What is modulation and demodulation? Question2: Explain the need of modulation and demodulation? Question3: What is analog modulation and state various techniques? Question4: Why frequency modulation is better than amplitude modulation? Question5: What is digital modulation and state
related to the message frequency, and the magnitude of the change to the depth of modulation at the generator. This zerocrossingcounter demodulator will be modeled in the latter part of the experiment and used for demodulation low frequency FM. The phase locked loop (PLL) as a demodulator will be studied in the next section. b.
Draw the block diagram of coherent ASK demodulator. Explain its working. Draw the block diagram of noncoherent ASK demodulator. Explain its working. How ASK is different from AM? If bit rate is 10sec then calculate the band width of ASK. Which is the efficient modulation
Frequency modulation is a form of modulation, which represents information as A Frequency Demodulation with using Frequency Discriminator In this section we are going to build a simple FM demodulator. 1. Answer the following questions: a. In the circuit above identify the differentiator and the envelope detector
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