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Electronics Angle Quiz
September 1967 Popular Electronics

September 1967 Popular Electronics

September 1967 Popular Electronics Cover - RF CafeTable of Contents

Wax nostalgic about and learn from the history of early electronics. See articles from Popular Electronics, 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

Electronic Angle Quiz, September 1967 Popular Electronics - RF CafeElectronics 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.














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.

RF Cafe Quizzes

Vintage Electronics Magazine Quizzes

Vintage Electronics Magazine Quizzes






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 phono-graph is the angle between the longi-tudinal axis of the cartridge and a tangent to the needle groove.



Posted August 17, 2018

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