NCTI Consumer Digital Electronics
questions with correct answers
What is the name of the group that established the initial technical standards for the
television industry, ensuring a single system would deliver consistent service across the nation? Answer ✓✓ The National Television System Committee (NTSC).
What signal modulation technique do cable operators use to transport digital television signals through the cable network? Answer ✓✓ Quadrature amplitude modulation (QAM).
What is the major change in enhanced definition TV (EDTV) that improved picture quality over standard definition TV (SDTV)? Answer ✓✓ The use of progressive scanning mode in EDTV.
What legislation required all television stations switch to digital-only broadcasting? Answer ✓✓ The U.S. Deficit Reduction Act.
Why are digital terminal adapters (DTA) more cost effective than a full-featured set-top box (STB)? Answer ✓✓ DTAs do not communicate RF upstream..
What terrestrial transmission technology did the Advanced Television Systems Committee (ATSC) select?. Answer ✓✓ 8-level vestigial sideband (8-VSB)
Which system advanced television to high definition (HD)? Answer ✓✓ The multiple sub-Nyquist sampling encoding (MUSE) system. How do set-top boxes (STB) typically connect to high definition televisions (HDTV) to provide the best picture quality? Answer ✓✓ To provide the best HD picture, STBs typically connect to HDTVs via a High-Definition Multimedia Interface (HDMI).
What inexpensive device is used by cable operators to provide digital TV (DTV) services to all of their customers? Answer ✓✓ A digital terminal adapter (DTA).
Which technology enables cable operators to control access to services by encrypting the programming? Answer ✓✓ Conditional access (CA).
Which statement below is correct in describing the internal process of a cathode ray tube (CRT)? Answer ✓✓ Magnetically directed electron beams, from electron guns, horizontally move back and forth, sending electron beams through a shadow mask.
Which type of TV technology had to overcome early disadvantages such as weak contrast, a lag or trail effect where fast-moving images appear to "smear" and screen door effect where viewers see a visible pixel structure at close range? Answer✓✓ Liquid crystal display (LCD)
The liquid crystal in liquid crystal display (LCD) technology is suspended between
two glass plates and the crystals are normally in a twisted configuration. What type
of light follows the orientation of the crystals, and is allowed to pass through? Answer✓✓ Polarized Light.
Projection technology enables larger displays than those of flat panel or direct view
TV sets. With rear-projection TV sets, what does the depth of the TV set depend on? Answer✓✓ The size of the screen
questions with correct answers
What is the name of the group that established the initial technical standards for the
television industry, ensuring a single system would deliver consistent service across the nation? Answer ✓✓ The National Television System Committee (NTSC).
What signal modulation technique do cable operators use to transport digital television signals through the cable network? Answer ✓✓ Quadrature amplitude modulation (QAM).
What is the major change in enhanced definition TV (EDTV) that improved picture quality over standard definition TV (SDTV)? Answer ✓✓ The use of progressive scanning mode in EDTV.
What legislation required all television stations switch to digital-only broadcasting? Answer ✓✓ The U.S. Deficit Reduction Act.
Why are digital terminal adapters (DTA) more cost effective than a full-featured set-top box (STB)? Answer ✓✓ DTAs do not communicate RF upstream..
What terrestrial transmission technology did the Advanced Television Systems Committee (ATSC) select?. Answer ✓✓ 8-level vestigial sideband (8-VSB)
Which system advanced television to high definition (HD)? Answer ✓✓ The multiple sub-Nyquist sampling encoding (MUSE) system. How do set-top boxes (STB) typically connect to high definition televisions (HDTV) to provide the best picture quality? Answer ✓✓ To provide the best HD picture, STBs typically connect to HDTVs via a High-Definition Multimedia Interface (HDMI).
What inexpensive device is used by cable operators to provide digital TV (DTV) services to all of their customers? Answer ✓✓ A digital terminal adapter (DTA).
Which technology enables cable operators to control access to services by encrypting the programming? Answer ✓✓ Conditional access (CA).
Which statement below is correct in describing the internal process of a cathode ray tube (CRT)? Answer ✓✓ Magnetically directed electron beams, from electron guns, horizontally move back and forth, sending electron beams through a shadow mask.
Which type of TV technology had to overcome early disadvantages such as weak contrast, a lag or trail effect where fast-moving images appear to "smear" and screen door effect where viewers see a visible pixel structure at close range? Answer✓✓ Liquid crystal display (LCD)
The liquid crystal in liquid crystal display (LCD) technology is suspended between
two glass plates and the crystals are normally in a twisted configuration. What type
of light follows the orientation of the crystals, and is allowed to pass through? Answer✓✓ Polarized Light.
Projection technology enables larger displays than those of flat panel or direct view
TV sets. With rear-projection TV sets, what does the depth of the TV set depend on? Answer✓✓ The size of the screen
