November 1966 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.
Robert Balin created this
Electronic Factor Quiz for the November 1966 edition of Popular Electronics
magazine. Your challenge is to match the drawing of a particular electronics circuit
or implement with the corresponding "factor." Examples are "current amplification factor,"
"damping factor," "modulation factor," "duty factor," "form factor," "quality factor,"
etc. There are ten in all. Of course on a quiz like this you cannot get just one answer wrong
- or any odd number for that matter. I managed to reverse #5 and #10 (I and B, respectively).
For some reason I couldn't remember what "form factor" was, but was sure that #10 was
a scale factor of sorts... wrong - a clear case of cranial rectumitis.
Electronic Factor Quiz
By Robert P. Balin
Most electronic technicians are familiar with such common expressions as "safety factor"
and "conversion factor." But how many are sure of the meaning of terms like "power factor"
and "duty factor"? See if you can associate: the electronic factor expressions
below (1-10) with the sketches (A-J) that suggest their application or meaning.
1) Current amplification factor
2) Damping factor
3) Modulation factor
4) Duty factor
5) Form factor
6) Quality factor.
7) Ripple factor
8) Velocity factor
9) Voltage amplification factor
10) Scale factor
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.
- 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
Geometry Quiz, January 1965
Factor Quiz, November 1966
Math Quiz, November 1965
- Series Circuit Quiz,
Electrochemistry 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
Factor Quiz Answers
1 - C) The Current Amplification Factor, or d.c. beta, of a transistor common
emitter circuit is the ratio of the collector current (Ic) to base current
(Ib). Thus, β = Ic/Ib.
2 - G) The Damping Factor of an amplifier is the ratio of its output voltage
under normal load conditions to the measured change in the output voltage when the load
3 - J) The Modulation Factor of an AM waveform is the ratio of the maximum excursion
of the modulation envelope to the level of the un-modulated carrier. (Percent modulation
is obtained by multiplying the modulation factor by 100.)
4 - E) The Duty Factor of a pulse is the ratio of its "on" time to the total
duration of its "on-off" cycle.
5 - I) The Form Factor of a waveform is the ratio of its effective or r.m.s.
value to its average value.
6 - D) The Quality Factor, or simply Q, of a series-resonant circuit is the
ratio of either its inductive or capacitive reactance (XL or XC)
at resonance to its d.c. resistance.
7 - A) The Ripple Factor of a filtered power supply is the ratio of the r.m.s.
value of the a.c. components to the average value of its d.c. output voltage.
8 - H) The Velocity Factor of a transmission line is the ratio of the velocity
of the r.f. energy along the line to the velocity of the same energy traveling in free
9 - F) The Voltage Amplification Factor or mu (μ) of a vacuum-tube amplifier
is the ratio of the amplitude of the output signal appearing at its plate to the amplitude
of the input signal applied to its grid.
10 - B) The Scale Factor of a high-voltage probe is the constant by which the
meter reading must be multiplied to obtain the actual value of the voltage measured with
Posted May 18, 2018