August
V63/T04043/EE/20150822
2015
Analog Communication
Instructions:
Marks-80
Time: 3 Hrs
1. All questions are compulsory.
2. “Long Answer type Question (LAQ)” is a supply type
question of 15 marks which required a typical answer of about
60-80 lines in bout 32-40 minutes.
3. “Sort Answer type Question (SAQ)” is a supply type question
of 5 marks which required a typical answer of about 15-20 lines
in bout 08-10 minutes.
4. Figures to the right indicate marks allotted to the questions.
5. Assume suitable data if necessary
6. Use a nonprogrammable type of scientific calculator is
allowed
Marks
SECTION-A
Q.1 Define modulation index. What is the effect of modulation index on
AM wave?
OR
15
Q.1 Explain power relation in AM wave.
15
Q.2 Write the methods of FM wave generation? Explain any one?
15
OR
Q.2 Draw & explain practical diode detector method in AM
demodulation.
15
Q.3 What is bandwidth required for FM in which maximum deviation is
5kHz & mf=3.Assume highest needed standards are 6
5
Q.4 Explain neat sketch of Half & Full duplex communication.
5
SECTION-B
Q.5 Explain quarter wave transformer & impedance matching with
suitable sketch.
15
OR
Q.5 Explain the circuit operation of balanced slope detector.
15
Q.6 What is the function of antenna .Define following terms
1) Radiation pattern
2) Antenna Gain
3) Isotropic radiator.
4) power gain
15
OR
Q.6 Draw & explain the construction & working of Dish antenna with
their advantages.
15
Q.7 Write the advantages of RF amplifier.
5
Q.8 Why transmission line should be balanced?
5
Computer Generated Random Question Paper dated: 07-07-2015 12:39:15
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