Es&t020

26 Questions | Attempts: 380
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    Luminance refers to:

    • Brightness
    • Contrast
    • Chroma
    • Raster
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About This Quiz

This QUIZ is made or by product  of my continuous research & study about Electronics Engineering to help the Electronics Engineer/Technician Aspirants in passing the Board Examinations.

Es&t020 - Quiz

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  • 2. 

    RGB stands for:

    • Red-Green Burst

    • Red-Green Brightness

    • Red-Green Bandwidth

    • Red-Green-Blue

    Correct Answer
    A. Red-Green-Blue
  • 3. 

    The smallest picture element is called a:

    • Dot

    • Pic

    • Pixel

    • Row

    Correct Answer
    A. Pixel
  • 4. 

    The aspect ratio of a standard TV receiver is:

    • 3:4

    • 4:3

    • 525:625

    • 625:525

    Correct Answer
    A. 4:3
  • 5. 

    The horizontal output transformer is also called:

    • The isolation transformer

    • The video transformer

    • The flyback transformer

    • The yoke

    Correct Answer
    A. The flyback transformer
  • 6. 

    Compared to a monochrome CRT, the accelerating voltage on a color CRT is:

    • About the same

    • Much higher

    • Much lower

    • Color CRTs use magnetic acceleration

    Correct Answer
    A. Much higher
  • 7. 

    AFPC stands for:

    • Allowed full picture chroma

    • Automatic frequency and phase control

    • Automatic frequency and picture control

    • None of the above

    Correct Answer
    A. Automatic frequency and phase control
  • 8. 

    The function of the "color burst" is to:

    • Detect the presence of a color video signal

    • Regenerate the color sub-carrier

    • To synchronize the color demodulation line by line

    • All of the above

    Correct Answer
    A. All of the above
  • 9. 

    The number of scan lines in an NTSC signal is:

    • 525

    • 625

    • 1024

    • 1250

    Correct Answer
    A. 525
  • 10. 

    The maximum luminance level is called:

    • Max white

    • Peak white

    • All white

    • Whiter than white

    Correct Answer
    A. Peak white
  • 11. 

    The modulation used for the video signal in a standard NTSC color TV receiver is:

    • SSB

    • Vestigial sideband AM

    • Suppressed-carrier AM

    • FM

    Correct Answer
    A. Vestigial sideband AM
  • 12. 

    NTSC stands for:

    • National Television Systems Commission

    • National Television Systems Committee

    • National Television Systems Council

    • Nippon Television Systems Commission

    Correct Answer
    A. National Television Systems Committee
  • 13. 

    In a color TV receiver, Y I Q refers to:

    • Luminance signal, in-phase color component, quadrature phase color component

    • Composite color signal, in-phase color component, quadrature phase color component

    • Composite video signal, in-phase video component, quadrature video color component

    • A method of demodulating stereo sound

    Correct Answer
    A. Luminance signal, in-phase color component, quadrature phase color component
  • 14. 

    Deflection in CRTs used in TV receivers is done:

    • Magnetically for both vertical and horizontal

    • Electrostatically for both vertical and horizontal

    • Electrostatically for vertical and magnetically for horizontal

    • Magnetically for vertical and electrostatically for horizontal

    Correct Answer
    A. Magnetically for both vertical and horizontal
  • 15. 

    The number of NTSC frames sent per second is:

    • 25

    • 30

    • 50

    • 60

    Correct Answer
    A. 30
  • 16. 

    The blanking level corresponds to a luminance of:

    • White

    • Black

    • Whiter than white

    • Blacker than black

    Correct Answer
    A. Black
  • 17. 

    The NTSC specification was drawn up by the:

    • FCC

    • IRE

    • EIA

    • IEEE

    Correct Answer
    A. EIA
  • 18. 

    The number of NTSC fields sent per second is:

    • 25

    • 30

    • 50

    • 60

    Correct Answer
    A. 60
  • 19. 

    When measured in lines, horizontal resolution:

    • Is greater than vertical resolution

    • Is about the same as vertical resolution

    • Is less than vertical resolution

    • Horizontal resolution is not measured in lines

    Correct Answer
    A. Is about the same as vertical resolution
  • 20. 

    The modulation used for the audio signal in a standard NTSC color TV receiver is:

    • SSB

    • Vestigial sideband AM

    • Suppressed-carrier AM

    • FM

    Correct Answer
    A. FM
  • 21. 

    Luminance is measured in:

    • Foot-candles

    • Lumins

    • IRE units

    • NTSC units

    Correct Answer
    A. IRE units
  • 22. 

    The modulation used for the chroma signal in a standard NTSC color TV receiver is:

    • SSB

    • Vestigial sideband AM

    • Suppressed-carrier AM

    • FM

    Correct Answer
    A. Suppressed-carrier AM
  • 23. 

    SAP stands for:

    • Separate audio program

    • Separate audio pulse

    • Sync amplitude pulse

    • Sync audio pulse

    Correct Answer
    A. Separate audio program
  • 24. 

    The vertical blanking pulse is serrated to:

    • Maintain horizontal sync

    • Maintain vertical sync

    • Equalize the DC level

    • All of the above

    Correct Answer
    A. Maintain horizontal sync
  • 25. 

    Compared to the luminance signal, the horizontal resolution for color is:

    • Much greater

    • About the same

    • Much less

    • Resolution does not apply to color

    Correct Answer
    A. Much less
  • 26. 

    The sync pulse level corresponds to a luminance of:

    • White

    • Black

    • Whiter than white

    • Blacker than black

    Correct Answer
    A. Blacker than black

Quiz Review Timeline (Updated): May 17, 2017 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • May 17, 2017
    Quiz Edited by
    ProProfs Editorial Team
  • Sep 24, 2012
    Quiz Created by
    Catherine Halcomb
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