Download GTU BE/B.Tech 2018 Winter 6th Sem New 2162410 Industrial Communication System Question Paper

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GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-VI (NEW) EXAMINATION - WINTER 2018

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Instructions:

1. Attempt all questions.

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2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

Q.1

1. Explain following terms. [03]
   1. Modulation
   2. Channel Capacity

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   3. Baud rate.
2. Explain Amplitude modulation in brief. [04]
3. Draw and explain block diagram of communication system. [07]

Q.2

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1. Explain Phase modulation in brief. [03]
2. The total AM signal power is 48 Watts. Modulation index of AM is 45%. Calculate Carrier signal power and Sideband power. [04]
3. Explain Frequency modulation in detail. [07]

   OR

   Explain various communication modes in detail. [07]

Q.3

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1. Differentiate balanced and unbalanced transmission lines. [03]
2. Explain ASK and FSK in brief. [04]
3. Explain the UART transmitter and receiver with the help of block diagram. [07]

   OR

Q.3

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1. An Amplifier has a BW of 4MHz with 10kO as the input resistor. Calculate the RMS noise voltage at the input to this amplifier if the room temperature is 25°C. [03]
2. Explain in brief Suppression Techniques. [04]
3. Explain PAM, PWM and PPM in detail. [07]

Q.4

1. Explain USB in brief. [03]

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2. Explain network topologies in brief. [04]
3. Explain RS-232 interface standards. [07]

   OR

Q.4

1. Explain GPIB in brief. [03]

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2. Explain Wireless LAN using CSMA/CA in brief. [04]
3. Explain RS-422 and RS-485 interface standards in detail. [07]

Q.5

1. What is Protocol? list out various communication protocol. [03]
2. Explain various types of cables in brief. [04]

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3. Explain TCP/IP protocol in detail. [07]

   OR

Q.5

1. Explain advantages of optical fiber cable. [03]
2. Define followings terms. [04]
   1. Noise Figure

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   2. Noise Temperature
3. List the benefits of FIELDBUS and DEVICE NET system. Describe three Network classes of FIELDBUS and DEVICE NET system. [07]

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