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 | December, 2015 | |
| City, State | new delhi, |
Question Paper
1. Choose the correct answer.
The purpose of a radio transmitter is to generate,
modulate, and radiate a radio frequency signal.
demodulate, and radiate a radio frequency signal.
modulate, and collect a radio frequency signal.
modulate, and amplify a radio frequency signal.
Signal path between the transmitter and receiver in sky wave propagation is provided by
troposphere
ionosphere
atmosphere
stratosphere
The reflection coefficient of a line is -1. The line is
open-circuited
short-circuited
terminated by Z0
of infinite length
One of the following converts sound waves into AF signals
Loud speaker
Rectifier
Microphone
Antenna
The process of mlXlllg AF signal and RF wave is known as
modulation
demodulation
oscillation
amplification
In a Superheterodyne Receiver the frequency of input fed to the amplifier circuit is
600 kHz
445kHz
455 kHz
1055 kHz
Which factor determines the polarisation of a radiated wave?
The frequency of the transmitted wave
The impedance match of the transmission line
The direction of the electric field lines of force
The direction of the receiving antenna
Why do we go for modulation Define modulation index for amplitude modulation.
Define heterodyning. Distinguish between Narrow band FM and Wide band FM.
3. Explain the principle of operation of FM Receivers.
4. Derive the relationship between radiation resistance, directivity and effective aperture for a half-wave dipole.
What are the difficulties in single stub matching?
What is Standing-Wave Ratio Derive the relation between SWR and Reflection Coefficient.
Characteristic impedance of a transmission line is 50 ohm. Input impedance of the open-circuited line is Zoc 100 j150 ohm. When the transmission line is short-circuited, find the value of the input impedance.
Draw the radiation pattern of a half-wave dipole antenna and a folded dipole antenna.
7. Write short notes on any four of the following:
PLL
Telescopic Antenna
Pre-emphasis and De-emphasis
Balun
Polarization
The purpose of a radio transmitter is to generate,
modulate, and radiate a radio frequency signal.
demodulate, and radiate a radio frequency signal.
modulate, and collect a radio frequency signal.
modulate, and amplify a radio frequency signal.
Signal path between the transmitter and receiver in sky wave propagation is provided by
troposphere
ionosphere
atmosphere
stratosphere
The reflection coefficient of a line is -1. The line is
open-circuited
short-circuited
terminated by Z0
of infinite length
One of the following converts sound waves into AF signals
Loud speaker
Rectifier
Microphone
Antenna
The process of mlXlllg AF signal and RF wave is known as
modulation
demodulation
oscillation
amplification
In a Superheterodyne Receiver the frequency of input fed to the amplifier circuit is
600 kHz
445kHz
455 kHz
1055 kHz
Which factor determines the polarisation of a radiated wave?
The frequency of the transmitted wave
The impedance match of the transmission line
The direction of the electric field lines of force
The direction of the receiving antenna
Why do we go for modulation Define modulation index for amplitude modulation.
Define heterodyning. Distinguish between Narrow band FM and Wide band FM.
3. Explain the principle of operation of FM Receivers.
4. Derive the relationship between radiation resistance, directivity and effective aperture for a half-wave dipole.
What are the difficulties in single stub matching?
What is Standing-Wave Ratio Derive the relation between SWR and Reflection Coefficient.
Characteristic impedance of a transmission line is 50 ohm. Input impedance of the open-circuited line is Zoc 100 j150 ohm. When the transmission line is short-circuited, find the value of the input impedance.
Draw the radiation pattern of a half-wave dipole antenna and a folded dipole antenna.
7. Write short notes on any four of the following:
PLL
Telescopic Antenna
Pre-emphasis and De-emphasis
Balun
Polarization
Other Question Papers
Departments
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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