AUDIO VIDEO ENGINEERING (17537)
CHAPTER 1: HI-FI AUDIO AMPLIFIERS: (12 MARKS)
4 MARKS:
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What is Hi-Fi system? List the characteristics of Hi-Fi amplifier.
List functions available on Hi-Fi amplifier. Also explain function of Mic in & Aux. in.
Explain different controls available on Hi-Fi amplifier.
Draw & explain block diagram of Hi-Fi amplifier.
Draw block diagram of Hi-Fi amplifier. List any four characteristics of the same.
Draw the circuit diagram of three way cross over network & explain its operation.
State & explain necessity of a cross over network in Hi-Fi amplifier.
What is cross over network? Where & why it is used? Explain operation of two way
crossover network with neat diagram.
9. List the controls of a stereo amplifier system & explain use of each of them.
10. Compare stereo & Mono amplifiers.
11. Differentiate monophonic & stereophonic system.
12. Write short note on graphic equalizer.
13. State and explain the concept of graphic equalizer.
14. With neat circuit diagram explain operation of graphic equalizer.
15. What is graphic equalizer? Why and where is it used?
16. Explain the roles of Dolby-A system of noise reduction.
17. Explain Dolby-NR recording system in brief.
18. List & state the function of different types of speakers.
19. Draw the response of woofer, Mid-range & tweeter, Speakers. Write the Function of
cross-over network.
20. Differentiate between woofer, mid-range speaker & tweeter. (Any 4 points).
21. Explain the function of following in Hi-Fi amplifier :
i) Balance control
ii) Loudness control
iii) Bass and treble control
iv) Quasi stable switch.
22. Compare woofer, tweeter & Squawkers depending on:
I.
Frequency range
II.
Size & physical structure
III.
Placement
IV.
Attenuation
** Questions given above are w.r.t. E- Scheme of the subject
AUDIO VIDEO ENGINEERING (17537)
CHAPTER 2: CD PLAYER (12 MARKS):
4 MARKS EACH
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Give the advantages of florescent display system used in CD player.
Give the components used in CD player & explain any one of it.
Enlist any four function of remote control transmitter.
With a neat diagram explain function of CD pick-up assembly.
Explain working of CD pickup assembly in a CD player.
List the different lenses used in optical pickup unit in CD player & state function of
each
List the different types of motors used to drive CD player mechanism. State their
functions.
State advantages of CD.
Give the advantages of CD player. (any four)
Draw neat block diagram of CD player and state function of each block.
Give the different components used in CD player mechanism and explain any one of
them.
What is frequency interleaving? Why it is used in CD player.
Explain the function of CD player with neat block diagram.
Explain the function of following components used for CD mechanism.
I.
CD lens.
II.
Drive Motor.
6 MARKS EACH
1. State & Explain working principle of detection used in CD player.
2. Draw the block diagram of CD player & explain its function.
** Questions given above are w.r.t. E- Scheme of the subject
AUDIO VIDEO ENGINEERING (17537)
CHAPTER 3: TELEVISION FUNDAMENTALS:
(20 MARKS)
4 MARKS:
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Define vertical & horizontal resolution.
What do you understand by vertical and horizontal resolution in TV system?
Give the TV channel Allocation for band I & band III.
Give C.C.I.R.-B standards for colour television.
Give any four CCIR-B standards for colour TV reception.
Give CClR-B standards for colour signal transmission and reception.
What are sync pulses & Blanking pulses? Describe the use of these pulses in TV.
Give vertical sync pulse details.
Explain the term HUE & SATURATION.
Justify the choice of 625 lines for TV transmission. Why the total number of lines is
kept odd in all TV systems?
11. Define the terms: 1. Hue 2. Aspect ratio. 3. Saturation 4. Brightness 5. Contrast 6.
Luminance
12. Enlist the advantages of interlaced scanning.
13. What do you understand by interlaced scanning? Explain how it will help to reduce
the bandwidth of video signal.
14. Explain pre & post equalizing pulses with their need.
15. Write short note on Grassman’s law.
16. State and explain Grassman’s law for subtractive colour mixing.
17. Write short note on video bandwidth.
18. Explain additive colour mixing. Where it is used?
19. State & explain VSB transmission. State its advantages.
20. What is VSB transmission? State its merits.
21. Draw the neat sketch & explain V-sync pulse details.
22. Describe the term interlaced scanning. State its advantages.
23. List all constituents of COMPOSITE VIDEO SIGNAL. Give purpose of each.
24. Draw the composite video signal and label all the parts.
25. Explain why “equalizing pulses” are required to be transmitted? Give the number of
equalizing pulses added in our transmission standard.
26. Define the term persistence of vision. How it helps in image continuity.
27. Draw neat diagram showing H-sync blanking pulse detail.
28. Compare additive & subtractive mixing.
29. What is colour Burst? State importance with neat sketch.
30. Give meaning of the following terms:
I.
Compatibility
II.
Interlaced scanning
** Questions given above are w.r.t. E- Scheme of the subject
AUDIO VIDEO ENGINEERING (17537)
III.
Aspect ratio
IV.
Vertical resolution
31. Define With Respect To C.V.S.
I.
Pedestal Height.
II.
H-sync pulse.
6 MARKS:
1. Draw composite video signal with its waveforms. Explain the terms:
I.
Pedestal height
II.
Blanking pulse.
** Questions given above are w.r.t. E- Scheme of the subject
AUDIO VIDEO ENGINEERING (17537)
CHAPTER 4: TV TRANSMITTER & RECEIVER.
(20 MARKS):
4 MARKS:
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Draw & explain the diagram of PIL colour picture tube.
Describe construction & working principle of Plumbicon camera tube.
Differentiate between positive & negative modulation.
Draw & explain the diagram of delta gun picture tube.
Explain principle and working of Delta Gun picture tube.
Draw the constructional details of vidicon tube & define the term Dark current.
Draw neat sketch showing constructional details of vidicon camera tube.
Write short note on AGC.
Why AM is preferred for picture transmission & FM is used for sound transmission.
Draw neat block diagram of AGC circuit. State its function.
State Advantages of CCD camera.
Explain the working of solid state camera based on CCD.
“Serrated V-sync Pulses are used in TV transmission system” justify.
What is negative modulation? State its advantages.
Give the Merits and Demerits of negative modulation. (two each)
8 MARKS:
1. Compare positive and negative modulation and list the merits and demerits of
negative modulation.
2. Draw the block diagram of colour TV transmitter and explain its working in detail.
** Questions given above are w.r.t. E- Scheme of the subject
AUDIO VIDEO ENGINEERING (17537)
CHAPTER 5: COLOUR TV: (20 MARKS):
4 MARKS:
1. Explain the working of Yagi-Uda antenna with sketch.
2. Explain construction Yagi-uda antenna with the help of neat sketch. Also draw its
radiation pattern.
3. How U & V signals are separate?
4. Explain how separation of U and V signals is achieved in colour TV
5. Give comparison between NTSC, PAL, & SECAM system.
6. Write short note on colour killer circuit.
7. Draw neat sketch & explain construction of YAGI UDA antenna.
8. With neat circuit diagram explain working of ACC amplifier.
9. Explain generation of G-Y signal from UV signal.
10. Explain role of reflector & directors in YAGI UDA antenna.
11. Explain the working of ACC amplifier with the help of neat diagram.
12. Draw and explain the circuit diagram of RGB drive amplifier.
6 MARKS:
1. Explain operation of PAL-D decoder with its block diagram.
2. Draw neat circuit diagram of EHT generator and explain its operation.
3. Explain operation of colour killer control circuit with neat diagram.
8 MARKS:
1. Explain operation of PAL-D decoder with its block diagram.
2. Draw the block diagram of PAL-D receiver. Explain how signal is processed in each
block.
3. How high voltage is generated by EHT circuit in colour TV receiver.
4. Draw the block diagram of PAL-D type colour receiver & explain video intermediate
frequency amplifier.
5. Explain operation of PAL colour TV transmitter with its block diagram.
6. Explain video circuit amplifier with block diagram.
7. What is EHT? Explain its need. Draw the circuit diagram for EHT generation and
explain its working.
** Questions given above are w.r.t. E- Scheme of the subject
AUDIO VIDEO ENGINEERING (17537)
CHAPTER 6: CABLE TV: (16 MARKS):
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Draw & explain the block diagram of DTH system.
Draw the block diagram of dB meter.
Draw & explain the block diagram of CCTV.
Draw & explain the block diagram of MATV.
Draw & explain the block diagram of LNBC.
Explain the function of multiplexing with its type.
Explain the need of multiplexer and attenuator in cable TV.
Explain the function of DISH antenna & LNBC unit.
Write 8 Specification of Dish antenna.
What is LNBC? Why & where it is used in cable TV system.
Draw the block diagram & explain distribution system in CATV.
List various types of amplifiers used in cable TV distribution. Explain purpose of any
one in detail.
State working principle & specification of LNBC.
Explain function of trunk amplifier & bridging amplifier in cable TV system.
Draw typical signal distribution plan of cable TV system.
Why dish antenna is parabolic in shape and meshy surface?
What is the need of terminating resistance in MATV?
6 MARKS:
1. Explain working principle of DB meter with neat diagram.
** Questions given above are w.r.t. E- Scheme of the subject