Bissoy.com
Doctors Medicines MCQs Q&A

Which of the following statements are correct w.r.t. the vestigial sideband modulation? (i) As compared to SSB-SC, the bandwidth of the vestigial sideband becomes larger. (ii) The filter required needs to have a sharp cut-off. (iii) The transmitted vestige of the undesired sideband compensates for the loss of the wanted sideband.  (iv) Vestigial sideband is used in TV for transmission of the picture and sound signals.   Choose the correct answer from the code given below:

Which of the following statements are correct w.r.t. the vestigial sideband modulation? (i) As compared to SSB-SC, the bandwidth of the vestigial sideband becomes larger. (ii) The filter required needs to have a sharp cut-off. (iii) The transmitted vestige of the undesired sideband compensates for the loss of the wanted sideband.  (iv) Vestigial sideband is used in TV for transmission of the picture and sound signals.   Choose the correct answer from the code given below: Correct Answer (i) and (iii) are correct

Concept:

Vestigial Sideband Modulation is a type of amplitude modulation where a part of the signal called vestige is modulated, along with one sideband. The spectrum requirement is between DSB-SC and SSB (less than DSB-SC and more than SSB) (Statement 1 is true)

Vestigial Sideband Modulation (VSB) is used for video modulation in TV transmission due to the following reasons:

1) A workable compromise between the spectrum-conserving characteristics of single-sideband modulation and the demodulation simplicity of double-sideband amplitude modulation is found in the vestigial-sideband modulation.

2) Video signal exhibits a large bandwidth and significant low-frequency content which suggests the use of VSB.  

The spectrum of a vestigial sideband is as shown:

[ alt="JULY 2018 PART 4.docx 26" src="//storage.googleapis.com/tb-img/production/19/10/JULY%202018%20PART%204.docx%2026.png" style="width: 241px; height: 141px;">

[ alt="26 June 1" src="//storage.googleapis.com/tb-img/production/19/08/26%20June_1.png" style="width: 160px; height: 46px;">

In TV Transmission, FM is used for Audio transmission and AM for Video transmission.(Statement 4 is false)

Related Questions

Consider the following information and answer the questions based on it. Out of the 75 birders, 15 wanted to see only sunbird, 10 wanted to see only flycatcher, 12 wanted to see both sunbird and nuthatch, 15 wanted to see only bee-eater, 13 wanted to see both sunbird and bee-eater, 5 wanted to see both flycatcher and nuthatch and the remaining wanted to see only nuthatch. How many birders wanted to see only one bird?
Out of the 100 nature lovers, 20 people wanted to see only bison, 30 wanted to see both bison and tiger, 15 wanted to see only leopard, 25 wanted to see only tiger, 5 wanted to see both bison and leopard and the remaining wanted to see only bear. The ratio of people to wanted to see tiger to those who wanted to see bear is
Consider the following information and answer the questions based on it. Out of the 75 birders, 15 wanted to see only sunbird, 10 wanted to see only flycatcher, 12 wanted to see both sunbird and nuthatch, 15 wanted to see only bee-eater, 13 wanted to see both sunbird and bee-eater, 5 wanted to see both flycatcher and nuthatch and the remaining wanted to see only nuthatch. The difference between the birders who want to see sunbird and those who want to see flycatcher is
Consider the following information and answer the questions based on it. Out of the 75 birders, 15 wanted to see only sunbird, 10 wanted to see only flycatcher, 12 wanted to see both sunbird and nuthatch, 15 wanted to see only bee-eater, 13 wanted to see both sunbird and bee-eater, 5 wanted to see both flycatcher and nuthatch and the remaining wanted to see only nuthatch. The ratio of birders who like nuthatch to those who like bee-eaters is
Out of the 100 nature lovers, 20 people wanted to see only bison, 30 wanted to see both bison and tiger, 15 wanted to see only leopard, 25 wanted to see only tiger, 5 wanted to see both bison and leopard and the remaining wanted to see only bear. How many people wanted to see only one animal?
Out of the 100 nature lovers, 20 people wanted to see only bison, 30 wanted to see both bison and tiger, 15 wanted to see only leopard, 25 wanted to see only tiger, 5 wanted to see both bison and leopard and the remaining wanted to see only bear. How many people who wanted to see bison did not want to see leopard?
A frequency division multiplexing system is used to multiplex 24 independent voice signals. Single sideband modulation is used for the transmission. Each voice signal is allotted a bandwidth of 4 kHz. What is the overall transmission bandwidth of the channel ?
Which of the following is the correct order of human needs as formulated in Maslow's hierarchy of needs? a) Safety needs b) Love and belonging needs c) Physiological needs d) Self-actualisation needs e) Esteem needs Choose the most appropriate answer from the options given below:
Consider the following statements regarding modulation : 1. The communication systems, where a weak signal is transmitted by the use of a modulation is essential in carrier signal. 2. When the frequency of the high frequency signal is varied in accordance with the intensity of the low-frequency weak signal, the modulation is said to be frequency modulation. 3. The process of recovering original baseband signal from the modulated signal is called phase modulation. Which of the above statements are correct ? 
Maslow's need-hierarchy theory of motivation has classified the human needs into five categories as follows. Arrange the following needs in ascending order given by Maslow
1. Safety needs
2. Esteem needs
3. Social needs
4. Physiological needs
5. Self-actualisation needs
What is the sequence of domtion of these needs?