GUJARAT TECHNOLOGICAL UNIVERSITY
BE- SEMESTER-V (NEW) EXAMINATION - WINTER 2020
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Subject Code:3152412 Date:01/02/2021Subject Name:Industrial Communication Systems
Time:10:30 AM TO 12:30 PM Total Marks: 56
Instructions:
1. Attempt any FOUR questions out of EIGHT questions.
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2. Make suitable assumptions wherever necessary.3. Figures to the right indicate full marks.
Q.1 (a) Define Followings: 03
(1) Modulation Index (2) Baud rate (3) Noise
(b) Define Modulation. Draw the amplitude modulated waveforms for less 03
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than 100%, with 100% modulation.(c) Enlist Modulation Index measurement techniques. Explain any one 04
in brief.
(d) Explain the Power relation of the AM wave with necessary 04
mathematical analysis.
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Q.2 (a) Explain in brief PWM. 03
(b) Write a note on:- Communication modes. 04
(c) Compare AM, FM, PM in all aspects. 07
Q.3 (a) Explain in brief source of electrical noise. 03
(b) Explain the UART receiver with the help of block diagram. 04
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(c) Draw & explain block diagram of Fiber Optics Communication 07
system. Also list down the benefits of FOC.
Q.4 (a) Define Noise figure & Noise temperature. 03
(b) Differentiate Synchronous & Asynchronous system. 04
(c) Write a detailed note on Suppression techniques. 07
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Q.5 (a) Explain in brief USB! 03
(b) What is the Protocol? Explain MODBUS Protocol. 04
(c) Explain in detail HART Protocol. 07
Q.6 (a) Explain in brief TCP/IP. 03
(b) Write a technical note on :- GPIB 04
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(c) List the benefits of FIELDBUS, DEVICE NET system. Describe 07
three network classes of FIELDBUS, DEVICE NET system.
Q.7 (a) Explain in brief PAM. 03
(b) Write a note on:- CDPD. 04
(c) Explain the RS-485 interface standard in detail and draw the 07
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typical two-wire multidrop network.Q.8 (a) Explain in brief PPM. 03
(b) Write a note on:-Network Topologies. 04
(c) Explain RS-232 interface standards. 07
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