Grob TV - Basic Television Multiple Choice

28 Questions

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Television Quizzes & Trivia

Questions and Answers
  • 1. 
    Which of the following camera tube uses lead oxide (PbO) for the photoconductive target plate?
    • A. 

      Vidicon

    • B. 

      Plumbicon

    • C. 

      Saticon

    • D. 

      Image Orthicon

  • 2. 
    Camera signal output without sync is called
    • A. 

      Black burst

    • B. 

      Generator lock video

    • C. 

      Composite video

    • D. 

      Noncomposite video

  • 3. 
    • A. 

      Low beam current

    • B. 

      High gain in the amplifier

    • C. 

      Excessive gamma

    • D. 

      Insufficient scanning width

  • 4. 
    Which of the following camera tubes has minimum lag?
    • A. 

      Vidicon

    • B. 

      Plumbicon

    • C. 

      Saticon

    • D. 

      Iconoscope

  • 5. 
    • A. 

      Red

    • B. 

      Blue

    • C. 

      Yellow-green

    • D. 

      Infrared

  • 6. 
    Precise scanning size and linearity are most important in
    • A. 

      A black-and-white camera

    • B. 

      A plumbicon

    • C. 

      A single-tube color pickup

    • D. 

      A saticon

  • 7. 
    Beam alignment magnets for the camera tube are adjusted while rocking which control?
    • A. 

      Optical focus

    • B. 

      Electrical focus

    • C. 

      Beam current

    • D. 

      Shading

  • 8. 
    • A. 

      CCU

    • B. 

      ENG camera

    • C. 

      SEG

    • D. 

      Sync generator

  • 9. 
    • A. 

      0.4545

    • B. 

      1.0

    • C. 

      1.4

    • D. 

      2.2

  • 10. 
    If the camera cannot be placed far away enough to include everything in the scene, change the lens to one with a
    • A. 

      Lower f rating

    • B. 

      Higher f rating

    • C. 

      Longer focal length

    • D. 

      Shorter focal length

  • 11. 
    A typically value of vidicon dark current is
    • A. 

      0.2 uA

    • B. 

      About 200 uA

    • C. 

      8 mA

    • D. 

      800 mA

  • 12. 
    • A. 

      2

    • B. 

      4

    • C. 

      8

    • D. 

      32

  • 13. 
    Which of the following is FALSE?
    • A. 

      The lens inverts the optical image on the faceplate of the camera tube.

    • B. 

      The composite video signal includes the camera signal and sync not blanking

    • C. 

      The standard composite video from a camera is 1V p-p with negative sync.

    • D. 

      The plumbicon uses a lead oxide layer for the target plate.

  • 14. 
    Which of the following is TRUE?
    • A. 

      The diameter of the vidicon image plate is about 5 in. (127 mm)

    • B. 

      The plumbicon camera tube uses a silicon target plate.

    • C. 

      The composite video signal includes the camera signal and sync but not blanking.

    • D. 

      The lens inverts the optical image on the faceplates of the camera tube.

  • 15. 
    Which of the following produces the signal variations for G4 of the vidicon.
    • A. 

      Target plate

    • B. 

      Wire mesh

    • C. 

      Muzzle

    • D. 

      Beam control

  • 16. 
    What is the gamma required for the camera tube?
    • A. 

      2.2

    • B. 

      0.4545

    • C. 

      4.545

    • D. 

      0.22

  • 17. 
                is more important for the gamma correction for the camera tube.
    • A. 

      Color

    • B. 

      Monochrome

    • C. 

      Both Color and monochrome

    • D. 

      Either of Color or monochrome

  • 18. 
    In gamma correction the             is stretched by the picture tube.
    • A. 

      Black

    • B. 

      Gray

    • C. 

      White

    • D. 

      Red

  • 19. 
    To how many lax units is the illuminator of 3 fs, approximately equal?
    • A. 

      650

    • B. 

      225

    • C. 

      65

    • D. 

      30

  • 20. 
    What is the diagonal screen size for the 19CP4 picture tube?
    • A. 

      12 in.

    • B. 

      16 in.

    • C. 

      19 in.

    • D. 

      24 in.

  • 21. 
    To what deflection angle does a maximum deflection angle of 45 deg either side center correspond?
    • A. 

      30º

    • B. 

      90º

    • C. 

      120º

    • D. 

      360º

  • 22. 
    What is the usual heater voltage for picture tube?
    • A. 

      1.6 v

    • B. 

      5.6 V

    • C. 

      6.3 V

    • D. 

      9.3V

  • 23. 
    What is the typical anode voltage for a 25-in color picture tube?
    • A. 

      10 kV

    • B. 

      30 kV

    • C. 

      1 kV

    • D. 

      30 V

  • 24. 
    Typically, the anode capacitance for a 25-in tube is      
    • A. 

      2

    • B. 

      20

    • C. 

      205

    • D. 

      2000

  • 25. 
    When the TV set was turned on, full power was applied to the heater and the picture appeared within a fraction of a second.
    • A. 

      Ultor

    • B. 

      Implosion

    • C. 

      Instant-on operation

    • D. 

      Screen persistence

  • 26. 
    What are the phosphor numbers, respectively, for monochrome and color picture tubes?
    • A. 

      P1 and P4

    • B. 

      P1 and P22

    • C. 

      P4 and P22

    • D. 

      P4 and P1

  • 27. 
    What is the color of P1 screen phosphor?
    • A. 

      Red

    • B. 

      Blue

    • C. 

      White

    • D. 

      Green

  • 28. 
    Which of the following is the most negative (or least positive) electrode is the electron gun?
    • A. 

      Cathode

    • B. 

      Control grid G1

    • C. 

      Screen grid

    • D. 

      Focus grid