Exam Details
| Subject | Communication Physics | |
| Paper | ||
| Exam / Course | Bachelor Degree Programme (Elective Course: Physics) | |
| Department | School of Sciences (SOS) | |
| Organization | indira gandhi national open university | |
| Position | ||
| Exam Date | December, 2016 | |
| City, State | new delhi, |
Question Paper
1. Attempt any five parts:
Write any two applications of the bluetooth technology.
Define noise figure of an amplifier in dB.
What is the function of Automatic Gain Control in a receiver circuit?
Draw the circuit for implementation of Amplitude Shift Keying (ASK). Plot its output waveform.
The power of a microwave source is 100 W. There are two receivers at distance R1 2 km and R2 =20 km and the attenuation of the medium is 0·2 dB/km. Calculate the net loss of the signal between these two receivers.
With the help of appropriate diagrams, explain two wire full duplex communication.
Draw the waveform for 10001010 signal in bipolar NRZ format.
Using the expression for the reflection coefficient in a transmission line, calculate the values of the load impedance when you get no reflection complete reflection of the incident wave.
2. Attempt any two parts:
What are energy and power signals? Obtain the condition for a signal to be an energy signal, and a power signal.
List the sources of noise in communication systems. Calculate the quantisation noise for a digital signal with 20 mV step.
Explain a typical communication system with the help of a detailed block diagram.
3. Attempt any two parts:
Derive the mathematical equation of an amplitude modulated wave and explain the terms used. State the significance of sidebands.
How is F.M. wave generated Explain Armstrong System of FM generation.
State four main classes of encoding of digital signals. Explain Manchester Coding
4. Attempt any two parts'
Draw the diagram showing the construction of a monochrome television camera (vidicon). Explain the optical to electrical signal conversion in this camera.
Compare TRF and Superheterodyne receivers. Write the advantages of superheterodyne receivers.
Obtain the expression for the gain of a parabolic reflector antenna. If D 10 m and A=0·03 calculate dB beam width.
5. Attempt any two parts:
Explain the Von Neumann architecture of a computer with the help of a block diagram.
Explain the categories of languages used in a computer. State the advantages and disadvantages of assembly language.
Compare OSI and TCP/IP reference models in computer networks.
Write any two applications of the bluetooth technology.
Define noise figure of an amplifier in dB.
What is the function of Automatic Gain Control in a receiver circuit?
Draw the circuit for implementation of Amplitude Shift Keying (ASK). Plot its output waveform.
The power of a microwave source is 100 W. There are two receivers at distance R1 2 km and R2 =20 km and the attenuation of the medium is 0·2 dB/km. Calculate the net loss of the signal between these two receivers.
With the help of appropriate diagrams, explain two wire full duplex communication.
Draw the waveform for 10001010 signal in bipolar NRZ format.
Using the expression for the reflection coefficient in a transmission line, calculate the values of the load impedance when you get no reflection complete reflection of the incident wave.
2. Attempt any two parts:
What are energy and power signals? Obtain the condition for a signal to be an energy signal, and a power signal.
List the sources of noise in communication systems. Calculate the quantisation noise for a digital signal with 20 mV step.
Explain a typical communication system with the help of a detailed block diagram.
3. Attempt any two parts:
Derive the mathematical equation of an amplitude modulated wave and explain the terms used. State the significance of sidebands.
How is F.M. wave generated Explain Armstrong System of FM generation.
State four main classes of encoding of digital signals. Explain Manchester Coding
4. Attempt any two parts'
Draw the diagram showing the construction of a monochrome television camera (vidicon). Explain the optical to electrical signal conversion in this camera.
Compare TRF and Superheterodyne receivers. Write the advantages of superheterodyne receivers.
Obtain the expression for the gain of a parabolic reflector antenna. If D 10 m and A=0·03 calculate dB beam width.
5. Attempt any two parts:
Explain the Von Neumann architecture of a computer with the help of a block diagram.
Explain the categories of languages used in a computer. State the advantages and disadvantages of assembly language.
Compare OSI and TCP/IP reference models in computer networks.
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
- Astronomy and Astrophysics
- Communication Physics
- Electric & Magnetic Phenomena
- Electrical Circuits and Electronics
- Elementary Mechanics / Ocillations & Waves
- Mathematical Methods in Physics-I/ Mathematical Methods in Physics-II
- Mathematical Methods in Physics-III
- Modern Physics
- Optics
- Physics of Solids
- Thermodynamics & Statistical Mechanics