# PTU B.Tech Electrical Engineering 6th Semester May 2019 71156 PRINCIPLES OF COMMUNICATION SYSTEMS Question Papers

PTU Punjab Technical University B-Tech May 2019 Question Papers 6th Semester Electrical and Electronics Engineering (EEE)-EE-Electrical Engineering

Roll No.
Total No. of Pages : 02
Total No. of Questions : 09
B.Tech.(EE)/(Electrical & Electronics) (2011 Onwards E-I)
(Sem.?6)
PRINCIPLES OF COMMUNICATION SYSTEMS
Subject Code : BTEE-605E
M.Code : 71156
Time : 3 Hrs. Max. Marks : 60
INSTRUCTION TO CANDIDATES :
1.
SECTION-A is COMPULSORY consisting of TEN questions carrying T WO marks
each.
2.
SECTION-B contains FIVE questions carrying FIVE marks each and students
have to attempt any FOUR questions.
3.
SECTION-C contains T HREE questions carrying T EN marks each and students
have to attempt any T WO questions.

SECTION-A
1.

(a) Define Amplitude modulation.

(b) Define frequency modulation.

(c) What do you understand by the principle of the camera?

(d) Define time division multiplexing.

(f) Explain the properties of practically realizable filter.

(g) Explain the concept of independent sideband transmitter.

(h) What do you mean by vestigial sideband transmission?

(i) What do you mean by pulse amplitude modulation (PAM)?

(j) Define double side band and single side band.
1 | M- 71156

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SECTION-B
2.
3.
What is the necessity of Non-uniform Quantization in PCM system?
4.
Draw and explain the diagram of picture tube of T.V.
5.
Compare the pulse position modulation and pulse code modulation.
6.
Why and how phase lock loop is used in amplitude modulation receiver?

SECTION-C
7.
Explain the working and draw the block diagram of the television receiver and
transmission.
8.
Explain the different types of modulation along with diagrams. Also give its advantages
and limitations.
9.
Explain and drive the Fourier series and Fourier transform of periodic signals.

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