June 1966 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.
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Here is the 46th quiz I have
posted from 1960s and 1970s issues of Electronics World and Popular Electronics
magazines. Most of were created by Robert P. Balin. I like to save them for Friday
afternoons. Guys like me who cut our teeth on analog meters read these indications like
a second language. Even novices usually do a good job on the meter needles, but reading
a mechanical micrometer (#9) might be more of a challenge, especially if you have never
used one before. The same goes for a dial caliper. Can you read the dials on a mechanical
gas or electric meter, where some spin CW and others spin CCW?
Meter-Reading Quiz
By Robert P. Balin
Electronic technician's, hobbyists, and experimenters
are constantly required to make measurements using test instruments with a variety of
dial calibrations. For in addition to the voltmeter, ammeter, ohmmeter, wattmeter, vu
meter, etc., there are other instruments which, though seldom used by the average hobbyist,
are of equal importance to the technician or experimenter. The micrometer is one of these.
Before testing your skill at reading meters, note the following useful procedures:
(1) Locate the zero index.
(2) Examine the scale to determine if it is linear or not.
(3) Determine the value of each major division and its subdivisions.
(4) Try to be as accurate as possible when approximating position of pointer or index
within a scale division.
Now, see how accurately you can read the following meter scales, to the nearest tenths
or hundredths.
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
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- 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
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Meter Quiz Answers
The meter pointer (or index) indication is determined partly by counting the number
of divisions-which is exact - and partly by estimating. Therefore, you may come up with
a slightly different reading than the answers given below:
1) 0.29 ma.
2) 1.65 megohms
3) -8.4 db (38%)
4) 7.7 volts
5) 16.3 ohms
6) 13.0 μa.
7) 102 volts
8) 1.25
9) 6.984 mm. The smallest division on the sleeve (stationary part) of this metric
micrometer is 0.5 mm.; therefore, the reading is 6.500 mm., plus the reading of the thimble
(rotating part). The smallest division on the thimble is 0.01 mm., giving a reading of
0.484 mm. for a total of 6.984 mm.
10) 76.7 Reading from the zero index mark on the vernier (stationary tab), the
indication is between 76 and 77 on the dial. Observe that the seventh division mark on
the vernier is the only mark that coincides precisely with a dial scale division mark.
This indication adds 0.7, for a reading of 76.7.
Posted July 19, 2018
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