Exam Details
| Subject | Principles of Communication Engineering | |
| Paper | ||
| Exam / Course | Diploma In Electronics And Communication Engineering (DECVI)/ Advanced Level Certificate Course In Electronics And Communication Engineering (ACEVI)/ | |
| Department | School of Engineering & Technology (SOET) | |
| Organization | indira gandhi national open university | |
| Position | ||
| Exam Date | June, 2015 | |
| City, State | new delhi, |
Question Paper
1. Draw the block diagram of communication system. What is the need of modulation in communication system
2. Explain AM modulation and demodulation techniques. Compare AM and FM modulation schemes.
3. Consider an angle modulated signal 3 cos [2n 10^6 t 2 sin (2n 10^3 Find its
instantaneous frequency at time
t 0.25 ms
t 0.5 ms
maximum phase deviation.
maximum frequency deviation.
4. Explain the working and block diagram of PLL with vector diagram.
5. A carrier which attains a peak voltage of 5 volts has a frequency of 100 MHz. This carrier is frequency modulated by a sinusoidal waveform of frequency 2 kHz to such an extent that the frequency deviation from the carrier frequency is 75 kHz. The modulated- waveform passes through zero and is increasing at time t 0. Write an expression for the modulated' carrier waveform.
What is AGC Explain its types.
Define Sensitivity, Selectivity and Fidelity of the AM radio receiver.
7. How does the phase of Carrier vary for the message ...} in
BPSK
DPSK
DEPSK system
8. Draw and explain the block diagram of FM transmitter. Write the mathematical representation of frequency modulation and its meaning.
9. Explain the following terms
Antenna resistance
Antenna gain
Power density
Horn antenna
10. The available power required at a receiving antenna is watt (that is, — 60 dB w.r.t. 1 watt). Transmitting and receiving antennas have gains of 40 dB each. The carrier frequency used is 4 GHz, and the distance between antennas is 30 km. Find the required transmitter powers
2. Explain AM modulation and demodulation techniques. Compare AM and FM modulation schemes.
3. Consider an angle modulated signal 3 cos [2n 10^6 t 2 sin (2n 10^3 Find its
instantaneous frequency at time
t 0.25 ms
t 0.5 ms
maximum phase deviation.
maximum frequency deviation.
4. Explain the working and block diagram of PLL with vector diagram.
5. A carrier which attains a peak voltage of 5 volts has a frequency of 100 MHz. This carrier is frequency modulated by a sinusoidal waveform of frequency 2 kHz to such an extent that the frequency deviation from the carrier frequency is 75 kHz. The modulated- waveform passes through zero and is increasing at time t 0. Write an expression for the modulated' carrier waveform.
What is AGC Explain its types.
Define Sensitivity, Selectivity and Fidelity of the AM radio receiver.
7. How does the phase of Carrier vary for the message ...} in
BPSK
DPSK
DEPSK system
8. Draw and explain the block diagram of FM transmitter. Write the mathematical representation of frequency modulation and its meaning.
9. Explain the following terms
Antenna resistance
Antenna gain
Power density
Horn antenna
10. The available power required at a receiving antenna is watt (that is, — 60 dB w.r.t. 1 watt). Transmitting and receiving antennas have gains of 40 dB each. The carrier frequency used is 4 GHz, and the distance between antennas is 30 km. Find the required transmitter powers
Other Question Papers
Departments
- Centre for Corporate Education, Training & Consultancy (CCETC)
- Centre for Corporate Education, Training & Consultancy (CCETC)
- National Centre for Disability Studies (NCDS)
- School of Agriculture (SOA)
- School of Computer and Information Sciences (SOCIS)
- School of Continuing Education (SOCE)
- School of Education (SOE)
- School of Engineering & Technology (SOET)
- School of Extension and Development Studies (SOEDS)
- School of Foreign Languages (SOFL)
- School of Gender Development Studies(SOGDS)
- School of Health Science (SOHS)
- School of Humanities (SOH)
- School of Interdisciplinary and Trans-Disciplinary Studies (SOITDS)
- School of Journalism and New Media Studies (SOJNMS)
- School of Law (SOL)
- School of Management Studies (SOMS)
- School of Performing Arts and Visual Arts (SOPVA)
- School of Performing Arts and Visual Arts(SOPVA)
- School of Sciences (SOS)
- School of Social Sciences (SOSS)
- School of Social Work (SOSW)
- School of Tourism & Hospitality Service Sectoral SOMS (SOTHSM)
- School of Tourism &Hospitality Service Sectoral SOMS (SOTHSSM)
- School of Translation Studies and Training (SOTST)
- School of Vocational Education and Training (SOVET)
- Staff Training & Research in Distance Education (STRIDE)
Subjects
- Advance Microprocessor And Architecture
- Analog And Mixed Mode Vlsi Design
- Analog Communication
- Analog Electronic Circuits
- Analog Integrated Circuits Design
- Antennas And Propagation
- Applied Electronics
- Audio and Video Engineering
- Basic Telematics
- Basics Of Electronics Engineering
- Bio Informatics
- Circuits and Networks
- Computer Architecture
- Computer Communication Networks
- Control Engineering
- Data Communication And Network
- Data Structures
- Device Modelling For Circuit Simulation
- Digital Communication
- Digital Electronics
- Digital Signal Processing
- Digital System Design
- Dip- ECE PCB Design & Testing
- Electromagnetic Field Theory
- Electronic Measurement And Instrumentations
- Electronic Measurement and Instruments
- Electronic Product Design
- Electronic Switching Circuits
- Embedded System Design
- Industrial Electronics
- Information Theory And Coding
- Linear Integrated Circuits
- Maintenance Of Electronic Equipment
- Micro Controller
- Micro Controllers
- Microelectronics Technology
- Microprocessor
- Microprocessor And Its Applications
- Microwave And Radar Engineering
- Modeling And Testing Of Digital Systems
- Multirate Systems
- Nano - Electronics
- Optical Fiber Communication
- Opto Electronics Communication Systems
- Power Electronics
- Principles of Communication Engineering
- Quantum Communication
- Rf Circuits
- Satellite And Tv Engineering
- Signal Compression
- Signals And Systems
- Technical English
- Television Engineering
- Wireless Communication