Exam Details
| Subject | communication engineering-ii | |
| Paper | ||
| Exam / Course | diploma engineering | |
| Department | ||
| Organization | Gujarat Technological University | |
| Position | ||
| Exam Date | May, 2017 | |
| City, State | gujarat, ahmedabad |
Question Paper
1/2
Seat No.: Enrolment
GUJARAT TECHNOLOGICAL UNIVERSITY
DIPLOMA ENGINEERING SEMESTER IV • EXAMINATION SUMMER- 2017
Subject Code: 341104 Date: 27 04 -2017
Subject Name: COMMUNICATION ENGINEERING-II
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.
4. Each question carry equal marks (14 marks)
Q.1
Draw and explain the block diagram of Communication Receiver.
07
07
State the Sampling theorem. Explain Nyquist rate, Nyquist interval and Aliasing.
Q.2
What is principle of PCM System? Explain PCM System with help of block diagram.
07
PCM PCM
07
Explain Independent Sideband System using Pilot carrier.
OR
Find out percentage power saving in DSB-SC System for and m=50%.
07
DSB-SC
Q.3
Compare DM, ADM, and DPCM.
07
DM, ADM, DPCM
07
Explain FSK Generation and Detection.
FSK
OR
Q.3
Explain generation of PWM using IC-555 and state advantages and disadvantages of PWM.
07
IC-555 PWM
07
Draw and explain block diagram of PCM-TDM System.
PCM-TDM
2/2
Q.4
Explain QPSK technique with help of block diagram and constellation diagram.
07
QPSK
07
Explain various signals used in RS-232 Standards and draw the connectors used for transmission of data.
RS-232
OR
Q.4
Explain RZ, NRZ and AMI line coding.
07
RZ, NRZ AMI
07
Explain Frequency Division Multiplexing.
Q.5
What is Null Modem? Show and explain different types of Null Modem connection.
07
07
Describe frame format of SDLC Protocol.
SDLC
OR
Q.5
Explain Simplex, Half-Duplex, and Full-Duplex transmission technique.
07
07
Write a short note on: UART.
UART
Seat No.: Enrolment
GUJARAT TECHNOLOGICAL UNIVERSITY
DIPLOMA ENGINEERING SEMESTER IV • EXAMINATION SUMMER- 2017
Subject Code: 341104 Date: 27 04 -2017
Subject Name: COMMUNICATION ENGINEERING-II
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.
4. Each question carry equal marks (14 marks)
Q.1
Draw and explain the block diagram of Communication Receiver.
07
07
State the Sampling theorem. Explain Nyquist rate, Nyquist interval and Aliasing.
Q.2
What is principle of PCM System? Explain PCM System with help of block diagram.
07
PCM PCM
07
Explain Independent Sideband System using Pilot carrier.
OR
Find out percentage power saving in DSB-SC System for and m=50%.
07
DSB-SC
Q.3
Compare DM, ADM, and DPCM.
07
DM, ADM, DPCM
07
Explain FSK Generation and Detection.
FSK
OR
Q.3
Explain generation of PWM using IC-555 and state advantages and disadvantages of PWM.
07
IC-555 PWM
07
Draw and explain block diagram of PCM-TDM System.
PCM-TDM
2/2
Q.4
Explain QPSK technique with help of block diagram and constellation diagram.
07
QPSK
07
Explain various signals used in RS-232 Standards and draw the connectors used for transmission of data.
RS-232
OR
Q.4
Explain RZ, NRZ and AMI line coding.
07
RZ, NRZ AMI
07
Explain Frequency Division Multiplexing.
Q.5
What is Null Modem? Show and explain different types of Null Modem connection.
07
07
Describe frame format of SDLC Protocol.
SDLC
OR
Q.5
Explain Simplex, Half-Duplex, and Full-Duplex transmission technique.
07
07
Write a short note on: UART.
UART
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