1-8. When     the     voltage     applied     to the     control     grid     is     negative in   respect   to   the   cathode, which    of    the    following occurs? 1. The    electron    beam    is turned    on 2. The    electron    beam    is unblanked 3. The    electron    beam    is blanked 4. The    electron    beam    is focused 1-9. The    intensity    of    light generated    by    the    phosphor coating   of   the   CRT   is dependant    on    which    of    the following    factors? 1. The    strength    of    the electron    beam 2. The    voltage    applied    to the     focus     grid 3. The    voltage    applied    to the    screen    grid 4. The    voltage    applied    to the    phosphor    screen 1-10. A   change   in   which   of   the following    voltages    will result   in   a   change   in the diameter    of    the    electron beam? 1. Cathode    filament    voltage 2. Focus    grid    voltage 3. Control    grid    voltage 4. Screen    grid    voltage 1-11. Which    of    the    following elements   of   a   CRT   moves   the electron    beam    to    create    the display? 1. Electron    gun 2. Control    grid 3. Focusing    grid 4. Deflection     system 1-12. 1-13. 1-14. 1-15. 1-16. 2 A   CRT   that   uses flowing    through current an    external yoke    assembly    to    deflect    the electron    uses    what    type    of deflection? 1 . Electrostatic deflection 2 . Electromagnetic deflection 3 . Internal    deflection 4 . External     deflection The   yoke   assembly   of   a   CRT contains    how    many    coils? 1 . One 2 . Two 3 . Three 4 . Four Current    flowing    through    a single   coil   of   a   yoke produces    a    magnetic    field    at what   angle   to   the   coil? 1 . 0° 2 . 30° 3 . 60° 4 . 90° Which   of   the   following   is   a description    of    electro- static    deflection    in    a    CRT? 1. 2. 3. 4. Current    flowing    through an    external    coil    creates a     magnetic     field     that moves    the    beam Current    flowing    through an    internal    coil    creates a     magnetic     field     that move    the    beam An    electrical    charge applied    to    plates    inside the   CRT   moves   the   beam An    electrical    charge applied    to    plates - outside    of    the    CRT    moves the    beam All    raster    scan    CRTs    use electromagnetic deflection. 1 . True 2 . False