This set of Audio Video Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Extended Definition Television (EDTV)”.
1. What is the full form of EDTV?
a) Extended Definition Television
b) Extra Definition Telephone
c) Extra Dimension Television
d) Extended Definition Telephone
View Answer
Explanation: EDTV stands for Extended Definition Television. EDTV refers to extending (improving) the definition or quality of picture on TV. It requires different transmission standards but retains the present line numbers and field rates. EDTV is intended for new delivery of media such as Direct Broadcasting Satellite (DBS) systems.
2. What is the scanning period when luminance and chrominance signals are compressed in EDTV?
a) 64 micro sec
b) 32 micro sec
c) 16 micro sec
d) 8 micro sec
View Answer
Explanation: The signals (luminance and chrominance) are not transmitted simultaneously in each line, but have to be transmitted sequentially on same line and they have to be compressed. Hence the luminance and chrominance signals are compressed to accommodate in 64 microsecond line scanning period.
3. Less distortion and intermodulation is present in EDTV.
a) True
b) False
View Answer
Explanation: The above statement is true. EDTV offers several advantages over conventional systems. Elimination of cross-color and cross-luminance is done. Less distortion and intermodulation is done in EDTV compared to conventional TV. Signal to noise ratio is improved compared to conventional TV system.
4. What is the full form of MAC?
a) Multiplexed Analog Container
b) Mixed Angle Components
c) Mixed Analog Compound
d) Multiplexed Analog Components
View Answer
Explanation: MAC stands for Multiplexed Analog Components. Problems like cross luminance and cross color effects were there in PAL/NTSC systems. To overcome this problem a new encoding system called MAC (Multiplexed Analog Components) is used. This system multiplexes both signals (chrominance and Luminance) and transmits them in time sequence not simultaneously.
Sanfoundry Global Education & Learning Series – Audio Video Engineering.
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