TV Picture Elements and Qualities

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What is the purpose of a camera tube at a television studio?

To convert picture elements to an electrical signal (correct)

To superimpose color information on a monochrome picture

To convert the video signal to a visual image

To control the phase angle of the demodulated color video signal

What is the term for the difference in intensity between black and white parts of a reproduced picture?

Brightness

Detail

Contrast (correct)

Resolution

What determines the color of an object in a television picture?

Tint

Chrominance

Luminance

Hue (correct)

What is the standard aspect ratio of a television picture frame?

4:3 Signup and view all the answers

What is the term for the luminous flux emitted, reflected or transmitted per unit projected area of a source?

Luminance Signup and view all the answers

What is the term for the color information superimposed on a monochrome picture?

Color level Signup and view all the answers

What is the number of frames that make up a single second of television?

30 Signup and view all the answers

How does interlaced scanning technique work?

Scanning odd lines and then even lines from top to bottom Signup and view all the answers

What does the 'p' in 1080p stand for?

Progressive scan Signup and view all the answers

What is the highest progressive format in common use?

2160p Signup and view all the answers

Why must antenna towers be painted with stripes?

To represent a hazard to aircrafts Signup and view all the answers

How are antenna towers marked at night?

With two steady burning lamps in an aviation red light globe Signup and view all the answers

What is the maximum number of pixels per line in the DTV formats mentioned?

1920 Signup and view all the answers

What is the purpose of amplifiers in the cable TV system?

To regenerate the signals due to distance Signup and view all the answers

What is the main function of the converter in cable TV?

To control the channels and allow remote control Signup and view all the answers

What is the purpose of the splitters in the cable TV system?

To split the signal to multiple households Signup and view all the answers

What is the main characteristic of Direct Broadcast Satellite TV (DBS TV)?

It is a newer form of consumer satellite TV Signup and view all the answers

What is the term used to describe the Cable TV office?

Head end Signup and view all the answers

What is the primary function of a Direct Broadcast Satellite TV (DBS TV) system?

To receive television programs directly from satellites Signup and view all the answers

What is the characteristic of the satellite dish in a DBS TV system?

It has a small diameter due to low noise Signup and view all the answers

What is the main purpose of a Closed Circuit Television (CCTV) system?

To monitor and secure areas through strategic camera placement Signup and view all the answers

What is a key feature of CCTV systems?

Limited access to video content through private coaxial cables Signup and view all the answers

What is one of the main functions of a CCTV system?

To allow viewing of video streams on smartphones and/or monitors Signup and view all the answers

What type of images can CCTV systems produce?

High Definition images up to 1080p Signup and view all the answers

What is the primary purpose of a Yagi-Uda antenna?

To act as a directional antenna for wireless communications Signup and view all the answers

What type of coaxial cable is ideal for HDTV transmission?

RG-11 Signup and view all the answers

What is the primary function of an Outside Broadcasting (OB) crew and van?

To cover events that cannot be shot inside a studio Signup and view all the answers

What is the purpose of the steady burning red beacon lights on an antenna tower?

To mark the midpoint of the antenna tower Signup and view all the answers

What is the main difference between 75 Ω and 50 Ω coaxial cables?

Their impedance for different signal types Signup and view all the answers

What is an OB Van essentially?

A mobile studio for outdoor events Signup and view all the answers