September 1967 Popular Electronics
Table of Contents
Wax nostalgic about and learn from the history of early electronics. See articles
published October 1954 - April 1985. All copyrights are hereby acknowledged.
Dang, I swapped two answers and scored an 80%. Haste makes waste, as the saying goes. Don't rush through this 1967 Popular Electronics "Electronic Angle Quiz" like I did and you'll probably ace it with the greatest of ease - especially if you have been in the electronics realm at least since the 1980s. Generation X'ers can have a two-question handicap (might never have seen real-life example of drawing "A" or "E") and Millennials (might never have seen drawing "A," "B," "D," or "H") get a four-question handicap.
Electronic Angle Quiz
By Robert P. Balin
Electronics technicians use the term "angle" in a variety of fashions: it can describe the area of coverage, the shape of a mechanical component, or denote the phase relationship between voltage and current in an a.c. circuit. For example, you may have heard of the "firing angle" of a thyratron, or the "conduction angle" of a vacuum tube. To test your knowledge of electronic "angles," try matching the angles depicted in drawings A through J with the descriptive terms below (1-10).
1 Azimuth Angle ___
2 Critical Angle ___
3 Cutting Angle ___
4 Deflection Angle ___
5 Dispersion Angle ___
6 Dwell Angle ___
7 Phase Angle ___
8 Refraction Angle ___
9 Shadow Angle ___
10 Tracking Angle ___
See answers below.
Popular Electronics published many quizzes over the years
- some really simple and others not so simple. Robert Balin created many of the quizzes.
This is a listing of all I have posted thus far.
- A Baffling Quiz
- January 1968
- Electronics IQ Quiz
- May 1967
- Plug and Jack Quiz
- December 1967
Switching Quiz - October 1967
Angle Quiz - September 1967
Electronics Quiz - July 1967
- Bridge Circuit
Quiz -December 1966
- Diode Function
Quiz - August 1965
- Diagram Quiz, August
- TV Trouble Quiz,
- Electronics History Quiz,
- Scope-Trace Quiz,
Circuit Analogy Quiz, April 1973
Your Knowledge of Semiconductors, August 1972
- Ganged Switching
Quiz, April 1972
- Lamp Brightness
Quiz, January 1969
- Lissajous Pattern Quiz, September 1963
Quizoo, October 1962
- Electronic Photo Album Quiz, March 1963
- Electronic Alphabet Quiz, May 1963
- Quiz: Resistive?
Inductive? or Capacitive?, October 1960
- Vector-Circuit Matching Quiz, June 1970
Quiz, September 1961
- RC Circuit
Quiz, June 1963
- Diode Quiz,
- Electronic Curves Quiz, February 1963
- Electronic Numbers Quiz, December 1962
- Energy Conversion Quiz, April 1963
Function Quiz, June 1962
Quiz - February 1967
- Unknown Frequency
Quiz - September 1965
Metals Quiz - October 1964
Measurement Quiz - August 1967
- Meter-Reading Quiz,
Geometry Quiz, January 1965
Factor Quiz, November 1966
Math Quiz, November 1965
- Series Circuit Quiz,
Quiz, March 1966
- Electronic Analogy
Quiz, November 1961
Coupling Quiz, August 1973
- Electronics Analogy Quiz, August 1960
- Audio Quiz,
Unit Quiz, May 1962
Capacitor Circuit Quiz, June 1968
- Quiz on AC Circuit Theory, December 1970
- Magnetic Phenomena Quiz, February 1962
- Electronics Geography Quiz, April 1970
Electronic Menu Quiz, August 1963
- Electronic Noise Quiz, August 1962
- Electronic Current Quiz, October 1963
- Electronic Inventors Quiz, November 1963
Function Quiz, January 1962
- Electronic Measurement Quiz, January 1963
Tube Quiz, February 1961
- Kool-Keeping Kwiz, June
- Find the
Brightest Bulb Quiz, April 1960
Angle Quiz Answers
1 - H) The Azimuth Angle of a tape recorder is the angle between the running axis of the tape and the gap in the recording head.
2 - F) The Critical Angle of a transmitted radio signal is the minimum angle which the wavefront, as it enters the ionosphere, can make with a line extending to the center of the earth, and still be reflected back to earth.
3 - I) The Cutting Angle of a recording stylus is the angle between the longitudinal axis of the stylus and a line perpendicular to the plane of the disc.
4 - G) The Deflection Angle of a cathode-ray tube is the angle swept by the maximum peak-to-peak deflection of the beam.
5 - D) The Dispersion Angle of a speaker defines the limits of sound radiation possible from a given cone design.
6 - A) The Dwell Angle of an automobile distributor cam and point assembly is the number of degrees through which the cam rotates while the ignition points are closed.
7 - J) The Phase Angle of an alternating current is the number of electrical degrees by which the current leads or lags the applied voltage in an a.c. circuit.
8 - C) The Refraction Angle is the angle which a light ray traveling through two different mediums makes with a line perpendicular to the interface of the mediums.
9 - E) The Shadow Angle of an electron ray (tuning eye) tube defines the target area (shaded) present under minimum signal conditions.
10 - B) The Tracking Angle of a phonograph is the angle between the longitudinal axis of the cartridge and a tangent to the needle groove.
Posted August 17, 2018