6-54.
Which of the following is NOT a
pickup devise?
1.
Image orthicon
2.
Microwave relay link
3.
SEC tube
4.
Vidicon
6-55.
What type of scanning is used in
television systems?
1.
Synchronized
2.
Nonsynchronized
3.
Horizontal
4.
Vertical
IN ANSWERING QUESTION 6-56, REFER TO
FIGURE 6-22 IN THE TEXTBOOK.
6-56.
6-57.
6-58.
6-59.
In the transmitter, what is added
to the electrical picture signal
from the camera to make a composite
video signal?
1. A sync operator signal
2. A signal from the pickup device
3. A receiver signal
4. A synchronizing signal
What total amount of time is
required for one scan of the
picture in the television systems
in the United States?
1.
1/15 second
2.
1/30 second
3.
1/60 second
4.
1/75 second
In commercial broadcast television,
for resolution of the fine detail
in the horizontal direction, what
total number of scanning lines are
used?
1.
100
2.
275
3.
350
4.
525
Of the following scanning methods,
which is the simplest?
1.
Interlaced
2. Noninterlaced
3. Vertical
4.
Horizontal
6-60.
Interlaced scanning is used in most
television systems for which of the
following reasons?
1. To increase flicker
2. To decrease bandwidth by a
factor of 2
3. To increase bandwidth by a
factor of 2
4. To decrease resolution
6-61.
What is the horizontal scanning
frequency of commercial broadcast
and most CCTV systems?
1.
30 Hz
2.
60 Hz
3.
525 HZ
4.
15,750 Hz
6-62.
The standard television signal
consists of what total number of
elements?
1.
One
2. Two
3.
Three
4.
Four
6-63.
For commercial television picture
information, what is (a) the
maximum percentage for black and
(b) the minimum percentage for
white of the maximum carrier
voltage ?
1.
(a) 75 (b) 5
2.
(a) 65 (b) 5
3.
(a) 75 (b) 15
4.
(a) 65 (b) 15
6-64.
The kinescope blanking pulse
suppresses the scanning beam during
what time?
1.
Vertical flyback time only
2.
Horizontal flyback time only
3.
Vertical and horizontal flyback
time
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