SKR Engineering College 2006 B.E Electronics & Tele-Communication Engineering TELEVISION AND VIDEO ENGINEERING - Question Paper

VI SEMESTER
B.E. ELECTRONICS AND COMMUNICATION ENGINEERING
EC345 - TELEVISION AND VIDEO ENGINEERING

Time: Three Hours Maximum : 100 Marks

ans All The ques.

PART – A (10 x two = 20 Marks)

1.What specifications of TV system decide horizontal and vertical resolution?

2.Draw the vestigial side band characteristics of TV transmitter and receiver.

3.A ghost image is produced two cm to the right of main image in a 40 cm wide picture tube. What is the difference in the path length of the direct and reflected rays?

4.Draw the construction of a folded dipole and state its function.

5.Draw the simplified circuit of a booster amplifier.

6.Draw the diagram of any 2 trap circuits used in video IF amplifier.

7.Draw the block diagram of colour TV Camera System.

8.What is meant by frequency interleaving?

9.Explain helical scanning in video tape recorder.

10.Draw the block diagram of the PLL used in frequency synthesized tuners.

PART – B (5 x 16 = 80 marks)

11.Derive an expression for the bandwidth of a video signal in terms of number of lines and field frequency.

12.a)With detailed block diagram discuss the working of monochrome television receiver.

(OR)

12.b)With circuit diagram define the IF part of a TV receiver. discuss how the use of a SAW filters simplifies the design of IF amplifiers.

13.a)Describe the horizontal deflection stage of a TV receiver. How EHT voltage is generated from this section?

(OR)

13.b)With circuit diagram define transistorized video driver and discuss how dc restoration and wide bandwidth are achieved in this stage.

14.a)With a block diagram define a PAL coder.

(OR)

14.b)Explain how colour TV picture tubes evolved from complicated shadow mask kind to simplified in – line picture tubes.

15.a)With block diagram discuss the working of infra-red remote control unit of a TV receiver.

(OR)

15.b)With block diagram discuss the working of Video tape recorder.

Earning:   Approval pending.