Paper Code: ETEC-406 L
T C
Paper: CONSUMER ELECTRONICS 2 1
3
INSTRUCTIONS TO PAPER SETTERS: MAXIMUM
MARKS: 75
1.
Question No. 1 should be compulsory
and cover the entire syllabus. This question should have objective or short
answer type questions. It should be of 25 marks.
2.
Apart from Q. No. 1 rest of the paper
shall consist of four units as per the syllabus. Every unit should have two
questions. However, student may be asked to attempt only 1 question from each
unit. Each question should be of 12.5 marks.
Unit I
Audio System: Microphones: construction, working principles
and applications of microphones, their types e.g. i ) Carbon ii) moving coil iii) velocity iv) crystal v) condenser
vi) cordless etc.
Loud speaker:
Direct readiating, horn loaded woofer , tweeter , mid range , multi- speaker
system , baffles and enclosures.
Sound recording on
magnetic tape , its principles ,block digram , and tape transport mechanism.
Digital sound recording on tape
and disc.
CD system, Hi- Fi system, pre-
amplifier and equalizer system, stereo amplifiers [No. of Hours: 11]
Unit II
Television: Monpchrome TV
Communication: Elements of TV communication system; Scanning – its need for
picture transmission; Need synchronizing and blanking pulses; Progressive
scanning – Gross structure filters, interlaced scanning, resolution and band
width requirement, tonal gradation; Composite Video signal (CVS )at the end of
even and add fields. Equalizing pulses and their need; Monochrome picture tube
– construction and working, comparison of magnetic and electric of Construction
and working of camera tube: vidicon and plumbicon , Block diagram of TV
camera and the transmitter chain
Block diagram of a TV receiver
: function of each block and wave form at the input and out put of each
block; Frequency range of various VHF bands and channels used in India Major
specification of the CCIR.
Concepts of positive and
negative modulation VSB Transmission Turner: Typical circuits of scanning
and EHT stages of TV receiver , keyed AGC , function and location of brightness
contrast V- hold , H- hold of centering control; Identification of faulty stage
by analyzing the symptoms and basic idea of a few important faults and there
remedies. [No. of Hours: 11]
Unit III
Color TV: Primary colors,
trisimulus values, trichromitc coefficients, concepts of additive and
subtracting mixing of colours, concepts of luminance, Hue and saturation,
Representation of a color in colour triangle, non spectral colour , visibility
curve; Compatibility of colour TV system with monochrome system . Block diagram
of colour TV camera, Basic colour TV system – NTSC, SECAM, and PAL their
advantages and disadvantages; Construction and working principles of Trinitron
and PIL types of colour picture tubes. Concepts of convergence, purity, beam
shifting; Need for luminance and band sharing by color signals, sub – carriers
frequency, colour difference signal and its need synchronous quadratic
modulation and representation of a color by a vector, brust signal and its need
, chrominance signal; Block diagram of PAL TV receiver. [No.
of Hours: 11]
Unit IV
Explanation and working digital TV LCD TV , HDTV , Plasma TV
Cable Television: Block diagram and principle of
working of cable TV and DTH, Cable TV using internet; Study of VCD and DVD ,
mobile phone architecture , FAX , Touch tone telephone set [No. of Hours:
11]
Text Books:
- R. R. Gulati, “Modern Television Practice” New Age International, 2nd Edition.
- S. P. Bali, “Consumer Electronics” Pearson Education, 1st Edition.
- R.
G. Gupta, “Audio & Video Systems” TMH – 2nd Edition.
Reference Books:
- A. Dhake, “Television & Video Engineering” TMH – 2nd Edition.
- R.R. Gulati, “Monochrome & Colour Television” New age International Publisher,
2nd Edition.
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