14
2-38.
In which of the following equipment
would you most likely find a cathode-
ray tube?
1. Oscillator
2. Oscilloscope
3. Television set
4. Both 2 and 3
2-39.
If deflection were not used in the CRT,
what would be viewed on the screen of
the tube?
1. A solid black screen
2. A solid white screen
3. A large spot on the left
4. A bright spot in the center
2-40.
Which of the following types of
deflection is used by much of the test
equipment in the Navy?
1. Electromagnetic
2. Electrostatic
3. Magnetic
4. Static
2-41.
Which of the following elements
cause(s) the electron beam to move
from left to right on a CRT?
1. Vertical deflection plates
2. Horizontal deflection plates
3. Suppressor grid
4. Control grid
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Figure 2B.
Deflection in a CRT.
2-42.
In figure 2B, what potentials should be
applied to points A and B to make
electron (e) deflect in the direction as
shown?
1. Point A zero and point B max
positive
2. Point A max negative and point B
max positive
3. Point A slightly positive and point
B slightly negative
4. Point A slightly positive and point
B zero
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