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Analog Communications Multiple Choice Questions | MCQs | Quiz

Analog Communications Interview Questions and Answers
Practice Analog Communications questions and answers for interviews, campus placements, online tests, aptitude tests, quizzes and competitive exams.

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•   Source Information
•   Transmitter
•   Receiver
•   Channel
•   Frequency Description
•   Single Tone Modulation
•   AM Waves Power Relations
•   AM Wave Representation
•   AM Waves Generation
•   AM Waves Detection
•   AM Problems
•   FDM System
•   Reducing Distortion Method
•   Power Calculation
•   Multitone Signal Spectrum
•   Balanced Modulator
•   Amplifiers AM Generation
•   Envelope Detector
•   Linear Modulation
•   Sinusoidal AM Power
•   Time Domain Description
•   Frequency Representation
•   DSBSC Waves Generation
•   DSBSC Waves Detection
•   Hilbert Transform
•   Costas Loop
•   DSBSC Problems
•   Quadrature Multiplexing
•   DSB-SC Carrier Techniques
•   DSB-SC Demodulation
•   Single Side Transmission
•   SSB-SC Representation
•   SSB-SC Generation Method
•   SSB-SC Demodulation
•   SSB Demodulation-Carrier
•   SSB Applications
•   Frequency Discrimination
•   Singletone SSB Modulation
•   Filter Method
•   Filter Method Advantages
•   Filter Method Disadvantage
•   Phase Shift Method
•   VSB Generation
•   VSB Applications
•   SSB Techniques
•   VSB Wave Modulation
•   VSB Wave Demodulation
•   AM SC Waves Spectrum
•   Chopper Circuit
•   Switching Circuit
•   Non Linear Device
•   SSB - Large Carrier
•   Instantaneous Frequency
•   Frequency Modulation Type
•   FM Signal Bandwidth
•   Multitone Wideband FM
•   Transmission Bandwidth
•   FM Stereo Multiplexing
•   Direct Method
•   Variation Method
•   Foster Seely
•   ZCD
•   Reactance Modulator
•   Varactor Diode
•   Frequency Translation
•   Frequency Multiplexing
•   Antenna Practicality
•   Noise Reduction
•   Narrowbanding
•   Phase Comparator
•   PAM Transition
•   Pulse Modulated System
•   PWM
•   Baseband Channel
•   Intersymbol Interference
•   Multiplexing Definition
•   Digital Multiplexing
•   Time Division Multiplexing
•   Synchronous TDM
•   Asynchronous TDM
•   Sampling Practical Aspects
•   Noise - AM
•   Noise - DSB-SC
•   Noise - SSB-SC
•   Noise - AM Wave
•   FM Noise
•   FM Threshold Effect
•   Phase Modulation Noise
•   Comparison B/W PM & AM
•   Comparison B/W FM & PM
•   Superhetrodyne Receiver
•   RF Mixing
•   AM Receiver
•   FM Receiver
•   Pre & De Emphasis
•   Heterodyne Receiver
•   AGC
•   Amplitude Limiting
•   Transducers Need

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Analog Communications Questions and Answers – Problems of DSBSC

Posted on January 31, 2018 by Manish

This set of Analog Communications Multiple Choice Questions & Answers (MCQs) focuses on “Problems of DSBSC”.

1. A Marconi antenna has length equal to ________
a) ʎ⁄4
b) ʎ⁄2
c) 1
d) ʎ⁄8
View Answer

Answer: a
Explanation: Marconi antenna is like a vertical wire having length one fourth of the working wavelength. Thus, it is a quarter-wave monopole antenna. Since, it was invented by Guglielmo Marconi, so it’s also called Marconi Antenna. It requires a ground plane with very good conductivity. Hence it is also called as a grounded antenna.
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2. In a Vidicon camera tube, both sides of the target plate have the coating of antimony tri-sulphide.
a) True
b) False
View Answer

Answer: b
Explanation: A vidicon camera tube is a type of camera having a photoconductive surface within. In a Vidicon camera tube, the side of target plate facing the light has a coating of Sno2 and the side facing electron gun has a coating of antimony trisulphide.

3. A trigonometric function is a synonym of ________
a) triangular function
b) orthogonal function
c) singular function
d) rectangular function
View Answer

Answer: a
Explanation: Trigonometric function is the angle expressed as the ratio of two sides of a right-angled triangle that contains the angle. It can also be seen as a synonym of triangular function.

4. White noise is a synonym of ________
a) partition noise
b) shot noise
c) johnson noise
d) transit time noise
View Answer

Answer: c
Explanation: White noise is an internal noise of communication system having different frequencies present with equal intensities. It can also be called Thermal noise or Johnson noise.

5. Local programmes in a cable TV can be telecast at any frequency.
a) True
b) False
View Answer

Answer: a
Explanation: There is not a fixed frequency range or bandwidth set for broadcasting of local programmes in a cable TV. It can be telecasted at any frequency, depending on the channel of bandwidth available.
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6. Minimum viewing angle of resolution of human eye is ________
analog-communications-questions-answers-problems-dsbsc-q6
View Answer

Answer: b
Explanation: Minimum resolution of human eye for clear observation is generally analog-communications-questions-answers-problems-dsbsc-q6a. The diameter of human eye is about 25mm.

7. Power density spectrum of a resistor R can be expressed as ________
a) 2 kTR
b) 1 kTR
c) 0.75 kTR
d) 3 kTR
View Answer

Answer: a
Explanation: Power Spectral Density is the quantity of power present in a signal in the frequency domain. The Power Density Spectrum of a resistor R can be expressed as 2 kTR where k is Boltzmann’s constant, T is Temperature and R is given resistance.

8. VSB is generally used in ________
a) television production
b) radio transmission
c) telephonic conversations
d) long distance conversations
View Answer

Answer: a
Explanation: Vestigial Sideband Modulation (VSB) is a type of amplitude modulation in which the carrier and only one sideband is completely transmitted and the other sideband is partly transmitted. Thus, television production is done using VSB modulation.

9. A helical antenna is used for satellite tracking due to its __________
a) broad bandwidth
b) circular polarization
c) linear polarization
d) good front to back ratio
View Answer

Answer: d
Explanation: Helical antenna consists conducting wire. These conducting wire is wound around it in the form of helix. It is mainly used for satellite tracking due to its good front to back ratio.

10. What is the typical bandwidth of a 2-wire telephone line?
a) 20 Hz to 6 KHz
b) 300 Hz to 3.4 KHz
c) 20 Hz to 20 KHz
d) 200 Hz to 6.5 KHz
View Answer

Answer: b
Explanation: A helical antenna is an antenna made of one or more conducting wires wound in the form of a helix. It produces circular polarization, because of which it is highly used in radio telemetry. It is mainly used for satellite tracking due to its good front to back ratio.
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Sanfoundry Global Education & Learning Series – Analog Communications.

To practice all areas of Analog Communications, here is complete set of 1000+ Multiple Choice Questions and Answers.

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» Next Page - Analog Communications Questions and Answers – Quadrature Carrier Multiplexing

« Analog Communications Questions and Answers – Costas Loop
Analog Communications Questions and Answers – Quadrature Carrier Multiplexing »
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Manish Bhojasia
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He is Linux Kernel Developer & SAN Architect and is passionate about competency developments in these areas. He lives in Bangalore and delivers focused training sessions to IT professionals in Linux Kernel, Linux Debugging, Linux Device Drivers, Linux Networking, Linux Storage, Advanced C Programming, SAN Storage Technologies, SCSI Internals & Storage Protocols such as iSCSI & Fiber Channel. Stay connected with him @ LinkedIn | Facebook | Twitter

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