30 Questions
What is the purpose of a camera tube at a television studio?
To convert picture elements to an electrical signal
What is the term for the difference in intensity between black and white parts of a reproduced picture?
Contrast
What determines the color of an object in a television picture?
Hue
What is the standard aspect ratio of a television picture frame?
4:3
What is the term for the luminous flux emitted, reflected or transmitted per unit projected area of a source?
Luminance
What is the term for the color information superimposed on a monochrome picture?
Color level
What is the number of frames that make up a single second of television?
30
How does interlaced scanning technique work?
Scanning odd lines and then even lines from top to bottom
What does the 'p' in 1080p stand for?
Progressive scan
What is the highest progressive format in common use?
2160p
Why must antenna towers be painted with stripes?
To represent a hazard to aircrafts
How are antenna towers marked at night?
With two steady burning lamps in an aviation red light globe
What is the maximum number of pixels per line in the DTV formats mentioned?
1920
What is the purpose of amplifiers in the cable TV system?
To regenerate the signals due to distance
What is the main function of the converter in cable TV?
To control the channels and allow remote control
What is the purpose of the splitters in the cable TV system?
To split the signal to multiple households
What is the main characteristic of Direct Broadcast Satellite TV (DBS TV)?
It is a newer form of consumer satellite TV
What is the term used to describe the Cable TV office?
Head end
What is the primary function of a Direct Broadcast Satellite TV (DBS TV) system?
To receive television programs directly from satellites
What is the characteristic of the satellite dish in a DBS TV system?
It has a small diameter due to low noise
What is the main purpose of a Closed Circuit Television (CCTV) system?
To monitor and secure areas through strategic camera placement
What is a key feature of CCTV systems?
Limited access to video content through private coaxial cables
What is one of the main functions of a CCTV system?
To allow viewing of video streams on smartphones and/or monitors
What type of images can CCTV systems produce?
High Definition images up to 1080p
What is the primary purpose of a Yagi-Uda antenna?
To act as a directional antenna for wireless communications
What type of coaxial cable is ideal for HDTV transmission?
RG-11
What is the primary function of an Outside Broadcasting (OB) crew and van?
To cover events that cannot be shot inside a studio
What is the purpose of the steady burning red beacon lights on an antenna tower?
To mark the midpoint of the antenna tower
What is the main difference between 75 Ω and 50 Ω coaxial cables?
Their impedance for different signal types
What is an OB Van essentially?
A mobile studio for outdoor events
Learn about the color combination for TV signals, picture elements, and qualities like brightness and contrast. Understand how picture tubes work in both studios and receivers.
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