Technology advancement has
always been about research and development in all fields related to the concept,
be it any combination of mechanical, electrical, programming, implementation, usage,
or training. Television went fundamentally unchanged from the time of its commercial
implementation in the early part of the last century until the advent of plasma
screens (i.e., no more raster-scanned CRTs) in the
latter part of the last century. Color tubes added complexity to the signal, but
it was still an analog signal. Then came digital broadcasting in the early part
of this century. The same sort of evolution occurred with telephones and to some
extent with radio. This Television I.Q. Quiz from a 1948 edition of Radio &
Television News magazine will give you some insight into how TVs
(and your computer monitor) used to work.
Television I.Q. Quiz
By Ed. Bukstein
Northwestern Vocational Institute
1. The frequency of horizontal scanning
in the standard 525 line television picture is (a) 60 (b) 525 (c) 15,750 (d) 31,500
c.p.s.
2. The control which varies the bias on the cathode-ray tube is (a) contrast
(b) brightness (c) focus (d) vertical hold.
3. The purpose of interlacing is to (a) reduce flicker (b) reduce ghost images
(c) make blanking unnecessary (d) make scanning unnecessary.
4; The linearity control is located in the (a) deflection circuit (b) sound i.f.
amplifier (c) sync clipper stage (d) picture i.f. amplifier.
5. Under present-day standards, the bandwidth occupied by a television signal
is (a) 75 kc. (b) 10 mc. (c) 525 mc. (d) 6 mc.
6. The width control varies the amplitude of the (a) sync pulses (b) horizontal
saw-tooth (c) vertical saw-tooth (d) blanking pulses.
7. Ghost images are caused by (a) power supply ripple (b) audio signals reaching
the grid of the picture tube (c) reflected signals (d) line voltage variations.
8. The purpose of the blanking pulses is to (a) synchronize the vertical oscillator
(b) eliminate retrace on picture tube (c) reduce ghost images (d) prevent arcing
in high voltage power supply.
9. The picture carrier is separated from the sound carrier by (a) 72 mc. (b)
21.5 mc. (c) 75 kc. (d) 4.5 mc.
10. The vertical oscillator frequency is (a) 60 (b)30 (c) 525 (d) 15,750
c.p.s.
11. The circuit shown in Fig. 1 is a
(a) sync separator (b) ratio discriminator (c) blocking oscillator (d) FM limiter.
12. The field frequency of standard television broadcasts is (a) 110 (b) 60 (c)
21.5 (d) 30.
13. The frequency of the horizontal oscillator is (a) 30 (b) 60 (c) 525 (d) 15,750
c.p.s.
14. Which of the voltage waveforms shown in Fig. 2 is required to pass a
saw-tooth current through a deflection coil?
15. The circuit shown in Fig. 3 is an (a) integration circuit (b) differentiation
circuit.
16. The frame frequency used in standard
television broadcasts is (a) 30 (b) 60 (c) 525 (d) 31,500 c.p.s.
17. Aspect ratio is a measure of (a) image width to image height (b) transmitting
antenna height to receiving antenna height (c) deviation of an FM signal (d) skip
distance.
18. The mosaic is part of the (a) iconoscope (b) kinescope (c) damping tube (d)
sync clipper.
19. The hold control is located in the (a) r.f. amplifier (b) sound i.f. amplifier
(c) deflection circuit (d) PM detector.
20. The diode connected to the horizontal deflection coils is known as the (a)
sync clipper (b) damping tube (c) video amplifier (d) video detector.
Quizzes from vintage electronics magazines such as Popular
Electronics, Electronics-World, QST, and Radio News were published
over the years - some really simple and others not so simple. Robert P. Balin
created most of the quizzes for Popular Electronics. This is a listing
of all I have posted thus far.
|
-
Elementary
Radio Quiz - December 1947 Radio-Craft
- Hi-Fi
Quiz - October 1955 Radio & Television News
- Electronics Physics
Quiz - March 1974 Popular Electronics
- A Baffling Quiz
- January 1968 Popular Electronics
- Electronics IQ
Quiz - May 1967 Popular Electronics
- Plug and Jack
Quiz - December 1967 Popular Electronics
- Electronic
Switching Quiz - October 1967 Popular Electronics
- Electronic
Angle Quiz - September 1967 Popular Electronics
- International
Electronics Quiz - July 1967 Popular Electronics
- FM Radio
Quiz - April 1950 Radio & Television News
- Bridge Circuit
Quiz -December 1966 Popular Electronics
- Diode Function
Quiz - August 1965 Popular Electronics
- Diagram Quiz,
August 1966 Popular Electronics
- Quist Quiz - November
1953 QST
- TV Trouble Quiz,
July 1966 Popular Electronics
- Electronics History Quiz,
December 1965 Popular Electronics
- Scope-Trace Quiz,
March 1965 Popular Electronics
-
Electronic
Circuit Analogy Quiz, April 1973
-
Test Your Knowledge of Semiconductors, August 1972 Popular Electronics
- Ganged Switching
Quiz, April 1972 Popular Electronics
- Lamp Brightness
Quiz, January 1969 Popular Electronics
- Lissajous Pattern Quiz, September 1963 Popular Electronics
- Electronic
Quizoo, October 1962 Popular Electronics
- Electronic Photo Album Quiz, March 1963 Popular Electronics
- Electronic Alphabet Quiz, May 1963 Popular Electronics
- Quiz: Resistive?
Inductive? or Capacitive?, October 1960 Popular Electronics
- Vector-Circuit Matching Quiz, June 1970 Popular Electronics
- Inductance
Quiz, September 1961 Popular Electronics
- RC Circuit Quiz,
June 1963 Popular Electronics
- Diode Quiz, July
1961 Popular Electronics
- Electronic Curves Quiz, February 1963 Popular Electronics
- Electronic Numbers Quiz, December 1962 Popular Electronics
- Energy Conversion Quiz, April 1963 Popular Electronics
- Coil Function
Quiz, June 1962 Popular Electronics
-
Co-Inventors Quiz - January 1965 Electronics World
-
"-Tron" Teasers Quiz - October 1963 Electronics World
- Polarity Quiz
- March 1968 Popular Electronics
-
Television
I.Q. Quiz - October 1948 Radio & Television News
- Amplifier Quiz
Part I - February 1964 Popular Electronics
- Semiconductor
Quiz - February 1967 Popular Electronics
- Unknown
Frequency Quiz - September 1965 Popular Electronics
- Electronics
Metals Quiz - October 1964 Popular Electronics
- Electronics
Measurement Quiz - August 1967 Popular Electronics
- Meter-Reading
Quiz, June 1966 Popular Electronics
- Electronic
Geometry Quiz, January 1965 Popular Electronics
- Electronic
Factor Quiz, November 1966 Popular Electronics
- Electronics
Math Quiz, November 1965 Popular Electronics
- Series Circuit
Quiz, May 1966 Popular Electronics
- Electrochemistry
Quiz, March 1966 Popular Electronics
- Biz
Quiz: Test Your Sales Ability - April 1947 Radio News
- Electronic
Analogy Quiz, November 1961 Popular Electronics
- Electronic
Coupling Quiz, August 1973 Popular Electronics
- Electronics Analogy Quiz, August 1960 Popular Electronics
- Audio Quiz, April
1955 Popular Electronics
- Electronic Unit
Quiz, May 1962 Popular Electronics
- Capacitor
Circuit Quiz, June 1968 Popular Electronics
- Quiz on AC Circuit Theory, December 1970 Popular Electronics
- Magnetic Phenomena Quiz, February 1962 Popular Electronics
- Electronics Geography Quiz, April 1970 Popular Electronics
- Electronic
Menu Quiz, August 1963 Popular Electronics
- Electronic Noise Quiz, August 1962 Popular Electronics
- Electronic Current Quiz, October 1963 Popular Electronics
- Electronic Inventors Quiz, November 1963 Popular Electronics
- Resistor Function
Quiz, January 1962 Popular Electronics
- Electronic Measurement Quiz, January 1963 Popular Electronics
- Vacuum Tube Quiz,
February 1961 Popular Electronics
- Kool-Keeping Kwiz, June
1970 Popular Electronics
- Find the Brightest
Bulb Quiz, April 1960 Popular Electronics
-
Where Do the Scientists Belong? - Feb 19, 1949 Saturday Evening
Post
|
Answers to "TV Quiz"
1. c
2.b
3.a
4.a
5.d
|
6. b
7. c
8. b
9. d
10. a
|
11. c
12.b
13. d
14. b
15. b
|
16. a
17. a
18. a
19. c
20. b
|
Scoring Table
19-20 correct ..... excellent
16-18 correct ..... very good
13-15 correct ..... good
10-12 correct ..... fair
9 or less ..... poor
Color and Monochrome (B&W) Television Articles
Posted October 3, 2016
|