Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 5th Sem New 2151101 Audio Video Systems Previous Question Paper
1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?V (NEW) EXAMINATION ? WINTER 2018
Subject Code:2151101 Date:04/12/2018
Subject Name:Audio Video Systems
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
MARKS
Q.1 (a) What is the meaning of the following terms pertaining to sound?
(i) Pitch (ii) Timbre (iii) Overtone.
03
(b) Write merits of digital television receiver. 04
(c) Explain Public Addressing System with the help of neat block diagram. 07
Q.2 (a) Prove that the approximate increase in velocity is 0.6m/s per degree Celsius
at room temperature.
03
(b) Compare positive and negative modulated video signal. 04
(c) Distinguish between cardioid, supercardioid and hypercardioid patterns and
specify their applications.
07
OR
(c) Explain in detail along with neat sketch working and characteristics of
Carbon Microphone?
07
Q.3 (a)
Define the following terms pertaining to picture:
(1) Saturation (2) Luminance (3) Hue
03
(b) Explain with reason
(1) Why number of Lines in PAL Television is chosen to be 625 lines?
(2) Why Aspect ratio in TV is chosen to be 4/3?
04
(c)
Draw and explain The Composite Video Signal in detail.
07
OR
Q.3 (a) With Reference to Loudspeaker define (1) Frequency Response (2)
Directivity (3) Efficiency
03
(b) Explain time compression and expansion technique of digital audio 04
(c) Explain interlaced scanning in detail? What are its merits over simple
(progressive) scanning?
07
Q.4 (a) Draw the block diagram of B & W TV Transmitter. 03
(b) What is acoustic reverberation and explain factors on which reverberation
time depends
04
(c) Enumerate Distinguishing features of LCD colour receives when compared
with Plasma receives. What is ?Slow Response Time? and how its effect is
minimized in LCD screens.
07
OR
Q.4 (a) Write the difference between JPEG and MPEG types of compression
technique
03
(b) Compare front projection system and rear projection system. 04
(c) Describe with the help of a neat diagram the working of variable density
method of optical recording of sound on films.
07
Q.5 (a) Compare MP3 and Blue ray disc 03
(b) Draw and explain the working of monochrome picture tube (Vidicon). 04
(c) With the help of neat and clean block diagram explain DTH TV Receiver 07
OR
www.FirstRanker.com www.FirstRanker.com
www.FirstRanker.com
FirstRanker.com - FirstRanker's Choice
www.FirstRanker.com
1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?V (NEW) EXAMINATION ? WINTER 2018
Subject Code:2151101 Date:04/12/2018
Subject Name:Audio Video Systems
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
MARKS
Q.1 (a) What is the meaning of the following terms pertaining to sound?
(i) Pitch (ii) Timbre (iii) Overtone.
03
(b) Write merits of digital television receiver. 04
(c) Explain Public Addressing System with the help of neat block diagram. 07
Q.2 (a) Prove that the approximate increase in velocity is 0.6m/s per degree Celsius
at room temperature.
03
(b) Compare positive and negative modulated video signal. 04
(c) Distinguish between cardioid, supercardioid and hypercardioid patterns and
specify their applications.
07
OR
(c) Explain in detail along with neat sketch working and characteristics of
Carbon Microphone?
07
Q.3 (a)
Define the following terms pertaining to picture:
(1) Saturation (2) Luminance (3) Hue
03
(b) Explain with reason
(1) Why number of Lines in PAL Television is chosen to be 625 lines?
(2) Why Aspect ratio in TV is chosen to be 4/3?
04
(c)
Draw and explain The Composite Video Signal in detail.
07
OR
Q.3 (a) With Reference to Loudspeaker define (1) Frequency Response (2)
Directivity (3) Efficiency
03
(b) Explain time compression and expansion technique of digital audio 04
(c) Explain interlaced scanning in detail? What are its merits over simple
(progressive) scanning?
07
Q.4 (a) Draw the block diagram of B & W TV Transmitter. 03
(b) What is acoustic reverberation and explain factors on which reverberation
time depends
04
(c) Enumerate Distinguishing features of LCD colour receives when compared
with Plasma receives. What is ?Slow Response Time? and how its effect is
minimized in LCD screens.
07
OR
Q.4 (a) Write the difference between JPEG and MPEG types of compression
technique
03
(b) Compare front projection system and rear projection system. 04
(c) Describe with the help of a neat diagram the working of variable density
method of optical recording of sound on films.
07
Q.5 (a) Compare MP3 and Blue ray disc 03
(b) Draw and explain the working of monochrome picture tube (Vidicon). 04
(c) With the help of neat and clean block diagram explain DTH TV Receiver 07
OR
www.FirstRanker.com www.FirstRanker.com
www.FirstRanker.com
www.FirstRanker.com
2
Q.5 (a) Compare EDTV & HDTV. 03
(b) Explain in brief about troubleshooting of PA system. 04
(c) Write a short note on LED TV.
07
*************
www.FirstRanker.com www.FirstRanker.com
www.FirstRanker.com
FirstRanker.com - FirstRanker's Choice
This post was last modified on 20 February 2020