10 questions
Q.1. (a) What is Blind speed? Calculate the minimum blind speed for a Radar, which is operating at a frequency 20 GHz and sends 1000 pulses per second. [8]
(b) An MTI Radar operates at 5GHz, with a pulse repetition frequency of 800 pps. Calculate the lowest three blind speeds of this radar. [8]
Q.1. (a) Explain microwave landing system using neat and clean diagram. [8]
(b) Write the difference between Pulse Radar and CW Radar with respect to - (i) Maximum Range (ii) Resolution (iii) Accuracy and (iv) Power Level. [8]
Q.2. (a) Draw the block diagram of Monochrome TV transmitter and explain each block. [8]
(b) Explain the - (i) Image orthicon (ii) CCD camera tubes. [8]
Q.2. (a) Explain Block diagram of TV transmitters. [4]
(b) Explain Plumbicon camera tube with its constructional diagram. [6]
(c) What is the disadvantage of NTSC system and how it overcomes in PAL System? [6]
Q.3. (a) What do you understand by compatibility in TV transmission? [4]
(b) Justify the use of vestigial side band transmission. [6]
(c) Why the front porch and back porch intervals provided before and after the horizontal sync pulse? Explain why the blanking pulses are not used as sync pulse. [6]
Q.3. (a) Describe briefly the different type of TV transmission and reception antennas with constructional diagram. [8]
(b) Write shorts notes on - (i) Encoding picture information (ii) Chrominance Signal Modulation. [4+4=8]
Q.4. (a) Explain the use of - (i) RF Tuner (ii) Video detector (iii) Deflection Oscillator (iv) AGC. [3x4=12]
(b) What is compatibility and how it has been achieved in B/W and colour TV system. [4]
Q.4. (a) What are advantages of using AGC in transmission receivers? [8]
(b) Write short notes on - (i) HDTV (ii) DBS-TV (iii) 3D-TV (iv) Video detector. [8]
Q.5. (a) Compare the analog TV and digital TV. [8]
(b) Explain transmission of TV signals through satellite and transponders. [8]
Q.5. (a) Explain working principles of - (i) Cable TV (ii) DBS TV. [4+4=8]
(b) Compare the picture quality of HDTV, 3D TV and Normal TV. Draw the functional block diagram of any beam-less TV receiver. [4+4=8]