Search RFCafe.com                           
      More Than 17,000 Unique Pages
Please support me by ADVERTISING!
Serving a Pleasant Blend of Yesterday, Today, and Tomorrow™ Please Support My Advertisers!
   Formulas & Data
Electronics | RF
Mathematics
Mechanics | Physics
     AI-Generated
     Technical Data
Pioneers | Society
Companies | Parts
Principles | Assns
 About | Sitemap
Homepage Archive		         Resources
Articles, Forums Calculators, Radar
Magazines, Museum
Radio Service Data
Software, Videos		      Entertainment
Crosswords, Humor Cogitations, Podcast
Quotes, Quizzes
   Parts & Services
1000s of Listings		  Vintage Magazines
Electronics World
Popular Electronics
Radio & TV News
QST | Pop Science
Popular Mechanics
Radio-Craft
Radio-Electronics
Short Wave Craft
Electronics | OFA
Saturday Eve Post
Software: RF Cascade Workbook
RF Stencils Visio | RF Symbols Visio
RF Symbols Office | Cafe Press
Espresso Engineering Workbook

Aegis Power  |  Alliance Test
Centric RF  |  Empower RF
ISOTEC  |  Reactel  |  RFCT
San Fran Circuits
everythingRF RF & Microwave Parts Database (h1)

Crane Aerospace Electronics Microwave Solutions

PCB Directory (Manufacturers)

Please Support RF Cafe by purchasing my  ridiculously low-priced products, all of which I created.

RF Cascade Workbook for Excel

RF & Electronics Symbols for Visio

RF & Electronics Symbols for Office

RF & Electronics Stencils for Visio

RF Workbench

T-Shirts, Mugs, Cups, Ball Caps, Mouse Pads

These Are Available for Free

Espresso Engineering Workbook™

Smith Chart™ for Excel
DC-70 GHz RF Cables - RF Cafe

Electronic Geometry Quiz
January 1965 Popular Electronics

January 1965 Popular Electronics

January 1965 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.

All of these technology-related quizzes from my collection of vintage Popular Electronics magazines were created by Robert p. Balin, and range in difficulty from relatively easy to head scratchers (for typical test takers like myownself). Sometimes modern readers will be stumped by references to dated drawings and/or terms like vacuum tubes and CRTs (which are themselves vacuum tubes, of course). This Electronics Geometry Quiz might assign a Millennial handicap on item "E" if you spaz out over the picture because of your relative youth, but if you get the other nine correct, you'll get all ten by default. This is might be the least challenging of Mr. Balin's quizzes (I easily got 10:10). Go ahead and give it a try.

Electronic Geometry Quiz

By Robert P. Balin

Electronics Geometry Quiz (A) - RF Cafe

Electronics Geometry Quiz (C) - RF Cafe

Electronics Geometry Quiz (B) - RF Cafe

Electronics Geometry Quiz (D) - RF Cafe

Often electronic components and circuits are named after their geometrical form or their. characteristic behavior curve. Examples are rhombic antennas, cosine deflection yokes, sine- and square-wave generators, etc. See if you can match the names of the curves and solids (1-10) at right with the drawings of their applications (A-J).

1 Cardioid ___

2 Catenary ___

3 Cone ___

4 Ellipse ___

5 Exponential ___

6 Helix ___

7 Paraboloid ___

8 Polyhedron ___

9 Toroid ___

10 Trapezoid ___

Electronics Geometry Quiz (E) - RF Cafe

Electronics Geometry Quiz (F) - RF CafeElectronics Geometry Quiz (G) - RF CafeElectronics Geometry Quiz (H) - RF Cafe

Electronics Geometry Quiz (I) - RF CafeElectronics Geometry Quiz (J) - RF Cafe

See answers below.

Quizzes from vintage electronics magazines such as Popular Electronics, Electronics-World, QST, Radio-Electronics, 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

Vintage Electronics Magazine Quizzes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Geometry Quiz Answers

1 - J)  Cardioid pattern graphically shows typical directional response characteristics of many good microphones.

2 - C)  Catenary curve is the shape assumed by a long-line antenna freely suspended between two towers.

3 - H)  Cone shape is the most common design for loudspeaker diaphragms.

4 - D)  Ellipse as seen on the screen of an oscilloscope shows the phase relationship between two signals that are essentially the same.

5 - G)  Exponential curve shows graphically the typical charging rate function of a capacitor.

6 - E)  Helix is the shape of the grid winding in many vacuum tubes. Certain antennas for telemetry applications also have a helix-shaped element.

7 - A)  Paraboloid is the shape of "dishes" used as signal-focusing reflectors for microwave equipment.

8 - I)  Polyhedron is the form of multi-faced solid in which mineral crystals such as quartz are found.

9 - B)  Toroid is a doughnut-shaped coil used in computer magnetic memory cores, integrated circuits, and other high efficiency applications.

10 - F)  Trapezoid as seen on the screen of an oscilloscope can be interpreted to reveal the percent of amplitude modulation of a carrier signal.

 

 

Posted August 7, 2024
(updated from original post on 6/1/2018)
DC-70 GHz RF Cables - RF Cafe

About RF Cafe

Kirt Blattenberger - RF Cafe Webmaster

Copyright: 1996 - 2024

Webmaster:

    Kirt Blattenberger,

    BSEE - KB3UON

RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while tying up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

Copyright  1996 - 2026

All trademarks, copyrights, patents, and other rights of ownership to images and text used on the RF Cafe website are hereby acknowledged.

All trademarks, copyrights, patents, and other rights of ownership to images and text used on the RF Cafe website are hereby acknowledged.

My Hobby Website: AirplanesAndRockets.com

My Daughter's Website: EquineKingdom
Amplifier Solutions Corporation (ASC) - RF Cafe



Innovative Power Products (IPP) Directional Couplers