Analog Communications Questions and Answers – Need of Transducers

This set of Analog Communications Multiple Choice Questions & Answers (MCQs) focuses on “Need of Transducers”. 1. What is the effect on the transmitted power, if the modulation index changes from 0.8 to 1? a) 0.1364 b) 0.239 c) 0.5 d) 0.3333 2. Analog signal may be converted into digital signal by ________ a) Filtering … Read more

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Analog Communications Questions and Answers – Amplitude Limiting

This set of Analog Communications Multiple Choice Questions & Answers (MCQs) focuses on “Amplitude Limiting”. 1. TRF receivers are used for ________ a) Detection of modulating signal b) Removal of unwanted signal c) Mixing modulating signal with unwanted signal d) Both detection of modulating signal and removal of unwanted signal 2. Calculate the power in … Read more

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Analog Communications Questions and Answers – AGC

This set of Analog Communications Multiple Choice Questions & Answers (MCQs) focuses on “AGC”. 1. Standard intermediate frequency used for AM receiver is ________ a) 455 MHz b) 455 KHz c) 455 Hz d) 20 KHz 2. Which device is used in TV receivers for tuning the receiver to the incoming signal? a) Varacter diode … Read more

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Analog Communications Questions and Answers – Heterodyne Receiver

This set of Analog Communications Multiple Choice Questions & Answers (MCQs) focuses on “Heterodyne Receiver”. 1. What is the bandwidth required in SSB signal? a) fm b) 2fm c) > 2fm d) < 2fm 2. One of the advantage of using a high frequency carrier wave is that it dissipates very small power. a) True … Read more

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Analog Communications Questions and Answers – Pre Emphasis and De Emphasis

This set of Analog Communications Multiple Choice Questions & Answers (MCQs) focuses on “Pre Emphasis and De Emphasis”. 1. Super heterodyne receivers needs an extra circuitry for frequency conversion. a) True b) False 2. Neper is ________ decibel. a) smaller than b) larger than c) equal to d) exactly twice of 3. The coupling used … Read more

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Analog Communications Questions and Answers – FM Receiver

This set of Analog Communications Multiple Choice Questions & Answers (MCQs) focuses on “FM Receiver”. 1. What is the auto-correlation function of a signal (t) at t0=0? a) It is equal to average voltage of the signal b) It is equal to average power of the signal c) It is equal to zero d) It … Read more

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Analog Communications Questions and Answers – AM Receiver

This set of Analog Communications Multiple Choice Questions & Answers (MCQs) focuses on “AM Receiver”. 1. Notch filter is a band pass filter. a) True b) False 2. For what modulation index, we can expect maximum undistorted power output of a transmitter? a) 50% b) 100% c) 25% d) 0 3. Modulation is used to … Read more

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Analog Communications Questions and Answers – RF Mixing

This set of Analog Communications Multiple Choice Questions & Answers (MCQs) focuses on “RF Mixing”. 1. For a periodic function, the spectral density and auto-correlation functions are ________ a) Laplace transform pair b) Fourier transform pair c) Gauss transform pair d) Z-transform pair 2. Spectral density express ________ a) Average voltage b) Average power in … Read more

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Analog Communications Questions and Answers – Superhetrodyne Receiver

This set of Analog Communications Multiple Choice Questions & Answers (MCQs) focuses on “Superhetrodyne Receiver”. 1. Which of the following statement is true about frequency modulation? a) noise gets decrease if we decrease deviation b) noise gets decrease if we increase deviation c) noise gets decrease by maintaining deviation constant d) noise relates parabolically to … Read more

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Analog Communications Questions and Answers – Comparison Between FM and PM

This set of Analog Communications Multiple Choice Questions & Answers (MCQs) focuses on “Comparison Between FM and PM”. 1. Pre-emphasis is used to amplify _________ frequencies. a) low b) high c) both low and high d) local oscillator 2. De-emphasis circuit is used ________ a) before detection b) after detection c) before encoding d) after … Read more

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Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

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