Past Guess Paper of Antenna & Wave Propagation.
Guess Paper 1 : Antenna & Wave Propagation Past Papers
University Name – Confidential
NOTE: Q.1 is compulsory, attempt any four questions from the remaining. All questions carry equal marks. Phones and other Electronic Gadgets are not allowed.
Time Allowed: 3 hours
Examination: Final, Fall – 2020
Total Marks: 70, Passing Marks (35)
Q.1 Fill right word in the blanks. [14]
- In transverse electromagnetic waves, electric and magnetic fields are……………… to each others.
- Impedance matching are performed in antennas for ……………. Power transfer.
- Antennas are use for ……………… communication.
- Isotropic antenna radiate ……………… power in all directions.
- For TV ………………… antennas are use.
- When the frequency of signal increases, the size of antenna ………………
- LNB stand for…………………..
Q.2 What is transverse electromagnetic wave, explain in detail with the help of diagram and electric, magnetic field relation. [14]
3 a.What is polarization, for which purpose polarization is performed
b.Explain vertical polarization of waves with the help of diagram. [07, 07]
4 What is radiation pattern, explain the radiation pattern of directional antenna with the help of diagram. [14]
Q.5 a.What is directivity of an antenna, explain with its mathematical equation.
b.What are the advantages and disadvantages of antenna field patterns multiplication? [07, 07]
Q.6 a.What are parasitic arrays, explain with the help of diagrams.
b.In which situation and places loop antennas are use, give at least five examples. [07, 07]
Q.7 Write short notes on any two of the following: [07, 07]
- Quality factor and bandwidth of an antenna.
- Field strength measurement of an antenna.
- Turnstile antenna
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