Electronic Analogy Quiz
November 1961 Popular Electronics

November 1961 Popular Electronics Table 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.

It is common in electronics courses for an analogy to be drawn between electrical and mechanical phenomena. In fact, a lot of circuit analysis methods and equations apply directly to mechanics, and vice versa. An LC (inductor-capacitor) oscillating tank circuit is akin to a spring and dashpot. Resistance of a wire is likened to skin friction of water flowing through a hose. Who among us can forget those lessons? This Electronic Analogy Quiz from the November 1961 edition of Popular Electronics presents a challenge both because some not-so-familiar examples of analogies are offered, and because some are a real stretch. Therefore, don't feel too bad if you don't get a few. That's my way of saying that I didn't get all of them right ;-) Answers and explanations are at the bottom of the page.

Electronic Analogy Quiz

Electronic circuits perform functions similar to many mechanical devices and natural phenomena, and finding an analogy between them often leads to a better understanding of both. See if you can match the numbered electronic circuits on the left with the lettered sketches on the right.

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.

Electronics IQ Quiz - May 1967 Plug and Jack Quiz - December 1967 Electronic Switching Quiz - October 1967 Electronic Angle Quiz - September 1967 International Electronics Quiz - July 1967 Bridge Circuit Quiz -December 1966 Diode Function Quiz - August 1965 Diagram Quiz, August 1966 TV Trouble Quiz, July 1966 Electronics History Quiz, December 1965 Scope-Trace Quiz, March 1965 Electronic Circuit Analogy Quiz, April 1973 Test Your Knowledge of Semiconductors, August 1972 Ganged Switching Quiz, April 1972 Lamp Brightness Quiz, January 1969 Lissajous Pattern Quiz, September 1963 Electronic 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 Inductance Quiz, September 1961 RC Circuit Quiz, June 1963 Diode Quiz, July 1961 Electronic Curves Quiz, February 1963 Electronic Numbers Quiz, December 1962 Energy Conversion Quiz, April 1963 Coil Function Quiz, June 1962

Semiconductor Quiz - February 1967 Unknown Frequency Quiz - September 1965 Electronics Metals Quiz - October 1964 Electronics Measurement Quiz - August 1967 Meter-Reading Quiz, June 1966 Electronic Geometry Quiz, January 1965 Electronic Factor Quiz, November 1966 Electronics Math Quiz, November 1965 Series Circuit Quiz, May 1966 Electrochemistry Quiz, March 1966 Electronic Analogy Quiz, November 1961 Electronic Coupling Quiz, August 1973 Electronics Analogy Quiz, August 1960 Audio Quiz, April 1955 Electronic 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 Resistor Function Quiz, January 1962 Electronic Measurement Quiz, January 1963 Vacuum Tube Quiz, February 1961 Kool-Keeping Kwiz, June 1970

 

 

 

 

 

 

 

 

Electronic Analogy Quiz Answers

            CIRCUIT                                       ANALOGY

1.  Low-pass filter                                   F. Tunnel
A low-pass filter "clips off" signals above a certain frequency; a tunnel "clips off" objects above a certain height.

2.  Zener diode regulator                        D. Centrifugal governor
A zener diode "resists" changes in voltage; a governor resists changes in speed.

3.  Push-pull circuit                                 H. Two-man saw
A signal is alternately "pushed" and "pulled" in a push-pull circuit; a two-man saw is alternately "pushed" and "pulled" by its operators.

4.  Wave trap                                          A. Drain trap
A wave trap removes unwanted signals; a drain trap "removes" unwanted odors.

5.  Smoothing filter                                               C. Coil spring suspension  
A filter "absorbs" signal "peaks" before they reach the associated circuits; a spring "absorbs" vibration "peaks" before they reach the associated chassis.

6.  Diode clipper                              E. Hedge clipper
A diode clipper "clips" off "peaks" in a signal; a hedge clipper" clips" of "peaks" in a hedge.

7.  High-pass filter                          G. Mountains
A high-pass filter obstructs the passage of signals below a certain frequency; a mountain obstructs the passage of objects below a certain height.

8.  A.C. rectifier                               B. Ratchet-and-pawl
An a.c. rectifier allows current to flow in one direction ; a ratchet-and-pawl allows a shaft to turn in one direction.

 

 

Posted September 20, 2012