Elementary Radio Quiz
December 1947 Radio-Craft

December 1947 Radio-Craft

December 1947 Radio Craft Cover - RF Cafe[Table of Contents]

Wax nostalgic about and learn from the history of early electronics. See articles from Radio-Craft, published 1929 - 1953. All copyrights are hereby acknowledged.

There is a good reason why Harold Glenn called this an "Elementary Radio Quiz." It appeared in a 1947 issue of Radio-Craft magazine. If you have been in the analog and RF electronics field for more than a couple years and don't score 100%, it has to be due to a misreading of accidental selecting of the wrong answer. I know what you're thinking - "The fool must have screwed up and missed at least one and is making excuses." Not this time - although I don't deny it could have happened. Anyway, it might be a fun quiz to pass out in the break room or maybe present it to a Ph.D. candidate during an interview ;-) "Bonne chance!," as Corporal Louis LeBeau might say!.

Elementary Radio Quiz

By Harold Glenn

Check your radio knowledge. A more advanced quiz will appear in an early issue.


1. Light and electricity are energy, and travel in the form of:

a. waves

b. frequency

c. amplitude

d. electrons


2. Which has the longest wave length?

a. light

b. heat

c. radio


3. The inductor is:

a. a coil

b. a condenser

c. an air core

d. an iron core


4. The to-and-fro surge of an electric current in a circuit is called:

a. detection

b. inductance

c. oscillation

d. capacitance


5. The loudspeaker changes:

a. sound into electric waves

b. r.f. to a.f.

c. a.f. to r.f.

d. electric waves into sound waves


6. In order to operate, the loudspeaker must have:

a. r.f. waves

b. a.f. waves

c. pure direct current

d. pure a.c. sine wave


7. The purpose of the detector is to change:

a. a.f. to r.f.

b. r.f. to a.f.

c. resonance to oscillation

d. oscillation to resonance


8. The action of the detector is called:

a. resonance

b. rectification

c. oscillation


9. Resistance in the tuned circuit causes:

a. distortion

b. rectification

c. broad tuning

d. oscillation


10. What is the frequency of 60-cycle, 117-volt, 100-watt house current?


Answers to Quiz on page 83

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





1. a

2. c

3. a

4. c

5. d

6. b

7. b

8. b

9. c

10. 60 cycles



Posted December 3, 2020