Can you give me question paper for diploma electronics and communication 6th semester examination ??

Here I am giving you question paper for diploma electronics and communication 6th semester examination in file attached with it ..
Q.1 (a) Write a short note on : Helical Antenna. 4
(b) Explain Broad-side & End-fire Array. 5
OR
(b) (1)What is the difference between Near field and Far field? 2
(2) Explain Rhombic Antenna. 3

(c) (1) What do you mean by null? 2
(2) Explain V antenna. 4
OR
(c) Define: (1) Short Dipole
(2) Near field
(3) Far field
(4) Parasitic Element 6

Q-2 (a) Define parabola. Explain paroboloid reflector antenna. Define spill over with diagram. 4
(b) Explain GPR in detail 5
OR
(b) (1) Define Radiation pattern in detail. 2
(2) Define antenna and explain the relation between transmission line and antenna. 3

(c) (1) Define Beamwidth, FNBW, HPBW. 2
(2) Derieve Friis transmission formula. 4
OR
(c) (1) Relation between beam solid angle and directivity. 2
(2) Define antenna efficiency. 2
(3) Off axis operation of paraboloid reflector anetnna 2

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Q.1 (a) Write a short note on : Decibel in acoustics. 4
(b) Draw and explain block diagram of PCM system. 5
OR
(b) (1)What is the difference between Reflection and Refraction. 2
(2) Explain Architectural Acoustics.
3

(c) (1) What is inverse square law? 2
(2) Write a short note on Absorption. 4
OR
(c) Define: (1) Pitch
(2) Loudness
(3) Quantization
(4) Sampling 6

Q-2 (a) What is need of synchronization ? 4
(b) Explain aspect ratio and image continuity. 5
OR
(b) What do you understand by interlaced scanning ? Show that it reduces flicker and conserves bandwidth . 5


(c) What do you understand by vertical and horizontal resolution ? Show that the highest modulating frequency that needs to be handled in the 625 TV system is 5MHz. 6

OR
(c) Explain meaning of brightness and contrast with respect to black and white picture. What do you understand by gamma correction ? What is optimum distance for viewing television pictures ? 6


Q : 2 (a) Modern television Practice by RRGulati chapter 1- topic no. 1.4
Q : 2 (b) Modern television Practice by RRGulati chapter 2- topic no. 2.1 , 2.2
Q : 2 (b) Modern television Practice by RRGulati chapter 2- topic no. 2.4
Q : 2 (c) Modern television Practice by RRGulati chapter 2- topic no. 2.5
Q : 2 (c) Modern television Practice by RRGulati chapter 2- topic no. 2.6