T.V QUESTIONs FOR GTU
(1)
(2)
(3)
(4)
(5)
(6)
(7)
What is scanning? Explain interlaced scanning
OR
Explain horizontal & vertical scanning using appropriate diagrams &
current waveforms.Explain why interlace scanning is required in T.V.
OR
State necessity of interlace scanning & Explain it by drawing
complete scanning sequence (625 Lines) indicating vertical trace &
retrace lines
OR
Define scanning.
Show that interlace scanning reduces flicker & conserves bandwidth
Write short note on : DTH
OR
Explain the D.T.H TV. System in short
OR
Explain Direct to Home (DTH) system
OR
Discuss DTH system
Explain the concept of vestigial sideband
OR
Explain Vestigial Sideband Transmission & Correction.
OR
What is vestigial side band transmission? Why is it used for
transmission of TV picture signals?
Describe various component of composite video signal
OR
Explain composite Video signals.
Explain positie & negative modulation in T.V.
OR
Discuss the merits & demerits of positive and negative modulation.
OR
Explain the merits and demerits of Negative modulation in brief.
OR
Define Negative and Positive Modulation.
Justify the choice for Negative Modulation .
Explain NTSC colour system.
OR
Draw & Explain NTSC Coder
OR
Give comparison between NTSC and SECAM systems.
OR
Draw and Explain NTSC color system
How U and V signals are separated in colour TV receiver? Explain with the
help of block diagram.
OR
Explain the separation of U & V colour phasors in T.V.
OR
Discuss Separation of U & V color Phasors.
NIRAJ JANI
TELEVISION ENGINEERING
*****
*****
*****
***
*****
****
****
Page 1
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(15)
Draw the basic block diagram of S.M.P.S. power supply & explain it in short.
OR
Write short note on : SMPS
OR
Discuss the cause of any seven faults from Color Picture tube & Power supply
(SMPS) section.
OR
Explain switch mode power supply (SMPS) for T.V. receiver
with its merits and demerits
OR
Draw B/D , discuss working, advantage and disadvantage of SMPS.
Write short note on : HDTV
OR
Explain HDTV Technology.
Draw the block diagram of PAL-D colour TV Receiver and explain function of
each block.
OR
Draw and explain block diagram of PAL decoder in brief.
OR
Draw & Explain PAL encoder using associated phasor diagram. How many
Delay lines are used in PAL –D color TV receiver ?
Define the following terms .
CONTRAST , HUE , SATURATION , ASPECT RATIO ,
BRIGHTNESS , HORIZONTAL & VERTICAL RESOLUTION.
OR
Define the following terms.
(a) Compatibility (b) Hue (c) Saturation (d) Aspect Ratio
OR
Define Only: Front porch, Back Porch, pedestal, Luminance, Saturation, Image
signal, Frequency interleaving.
Write short note on : MONOCHROME CAMERA TUBE.
OR
Draw the diagram of a monochrome picture tube and explain the terms:
electrostatic focusing and electromagnetic deflection.
OR
Write short note on : ANY ONE COLOUR PICTURE TUBE.
Draw & Explain gun structure & focusing details of TRINITRON Color Picture
Tube.
OR
Explain working of Trintron colour picture Tube with neat sketches.
State necessity of QAM, Explain it with PHASOR Diagram.
OR
Explain Qudrature Amplitude Modulation.
Draw PAL Encoder & Discuss its main features.
OR
Explain PAL Encoder
OR
Draw & Explain PAL encoder using associated phasor diagram.
NIRAJ JANI
TELEVISION ENGINEERING
*****
***
***
****
****
**
**
*****
Page 2
(16)
(17)
(18)
(19)
(20)
List functions of TV tuner. Draw functional diagram of Tuner and Discuss Basic
Electronics tuning.
OR
Explain common faults in tuner & sound section of a TV receiver.
OR
State all functions of TV Tuner. Discuss Electronics Tuner
Operation.
OR
Write short note on : common faults in TUNER section of T.V.
Describe briefly the merits of digital processing of TV signals over the
conventional analog method.
OR
Draw & Explain B/D of digital TV System.
State advantage of digital signal processing
OR
State Only: 1) Back Porch time period
2) P/S ratio for CVDsignal
3) Picture IF & sound IF signal frequency
4) Aspect Ratio for TV
5) Inter carrier sound IF signal frequency
6) Color sub carrier frequency for NTSC color
TV system
7) Location of SAW filter in CTV section.
Give the reasons:
1. (G-Y) Colour difference Signal is not transmitted.
2. Colour Burst Signals are transmitted along with
Composite video signal.
3. Sync pulses are provided in blacker than black area.
4. EHT Stage is connected with Horizontal Stage.
5. Vestigial Side band transmission is used in TV.
6. Hue control is not used in PAL TV receiver.
7. Colour picture tube requires more EHT Voltage.
Draw the neat sketch of a colour camera and explain how
luminance signal ‘Y’ & colour difference signal are produce.
(21)
Discuss additive color Mixing & Grass man’s Law.
(22)
Draw the block diagram of monochrome TV. Receiver and explain function of
each stage.
OR
Draw the block diagram of color TV. Receiver and explain function of each
stage.
NIRAJ JANI
TELEVISION ENGINEERING
*****
***
***
***
****
****
****
Page 3